HEADER    STRUCTURAL PROTEIN                      20-JUN-01   1JFF              
TITLE     REFINED STRUCTURE OF ALPHA-BETA TUBULIN FROM ZINC-INDUCED SHEETS      
TITLE    2 STABILIZED WITH TAXOL                                                
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TUBULIN ALPHA CHAIN;                                       
COMPND   3 CHAIN: A;                                                            
COMPND   4 MOL_ID: 2;                                                           
COMPND   5 MOLECULE: TUBULIN BETA CHAIN;                                        
COMPND   6 CHAIN: B                                                             
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: BOS TAURUS;                                     
SOURCE   3 ORGANISM_COMMON: CATTLE;                                             
SOURCE   4 ORGANISM_TAXID: 9913;                                                
SOURCE   5 ORGAN: BRAIN;                                                        
SOURCE   6 MOL_ID: 2;                                                           
SOURCE   7 ORGANISM_SCIENTIFIC: BOS TAURUS;                                     
SOURCE   8 ORGANISM_COMMON: CATTLE;                                             
SOURCE   9 ORGANISM_TAXID: 9913;                                                
SOURCE  10 ORGAN: BRAIN                                                         
KEYWDS    DIMER, GTPASE, STRUCTURAL PROTEIN                                     
EXPDTA    ELECTRON CRYSTALLOGRAPHY                                              
AUTHOR    J.LOWE,H.LI,K.H.DOWNING,E.NOGALES                                     
REVDAT   7   16-AUG-23 1JFF    1       REMARK DBREF  LINK                       
REVDAT   6   04-OCT-17 1JFF    1       REMARK                                   
REVDAT   5   11-JUN-14 1JFF    1       DBREF  REMARK SITE   VERSN               
REVDAT   4   24-FEB-09 1JFF    1       VERSN                                    
REVDAT   3   01-APR-03 1JFF    1       JRNL                                     
REVDAT   2   14-NOV-01 1JFF    1       JRNL                                     
REVDAT   1   19-SEP-01 1JFF    0                                                
JRNL        AUTH   J.LOWE,H.LI,K.H.DOWNING,E.NOGALES                            
JRNL        TITL   REFINED STRUCTURE OF ALPHA BETA-TUBULIN AT 3.5 A RESOLUTION. 
JRNL        REF    J.MOL.BIOL.                   V. 313  1045 2001              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   11700061                                                     
JRNL        DOI    10.1006/JMBI.2001.5077                                       
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   E.NOGALES,S.G.WOLF,K.H.DOWNING                               
REMARK   1  TITL   STRUCTURE OF THE ALPHA BETA TUBULIN DIMER BY ELECTRON        
REMARK   1  TITL 2 CRYSTALLOGRAPHY                                              
REMARK   1  REF    NATURE                        V. 391   199 1998              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   1  DOI    10.1038/34465                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 0.9                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH AND HUBER                                  
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 3.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 20.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 12422                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.232                           
REMARK   3   FREE R VALUE                     : 0.297                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : 623                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 3.50                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 3.66                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2315                       
REMARK   3   BIN FREE R VALUE                    : 0.3834                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 58                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 6578                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 124                                     
REMARK   3   SOLVENT ATOMS            : 0                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 40.00                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 41.40                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 26.50000                                             
REMARK   3    B22 (A**2) : 10.80000                                             
REMARK   3    B33 (A**2) : -37.40000                                            
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.010                           
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : OVERALL ANISOTROPIC                       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: CONSTRAINED                               
REMARK   4                                                                      
REMARK   4 1JFF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 06-JUL-01.                  
REMARK 100 THE DEPOSITION ID IS D_1000013707.                                   
REMARK 240                                                                      
REMARK 240 EXPERIMENTAL DETAILS                                                 
REMARK 240   RECONSTRUCTION METHOD          : CRYSTALLOGRAPHY                   
REMARK 240   SAMPLE TYPE                    : 2D ARRAY                          
REMARK 240   SPECIMEN TYPE                  : NULL                              
REMARK 240 DATA ACQUISITION                                                     
REMARK 240   DATE OF DATA COLLECTION        : 01-JAN-94; NULL                   
REMARK 240   TEMPERATURE           (KELVIN) : 93; NULL                          
REMARK 240   PH                             : 5.80                              
REMARK 240   NUMBER OF CRYSTALS USED        : 200                               
REMARK 240   MICROSCOPE MODEL               : JEOL 4000                         
REMARK 240   DETECTOR TYPE                  : GENERIC FILM                      
REMARK 240   ACCELERATION VOLTAGE (KV)      : NULL                              
REMARK 240   NUMBER OF UNIQUE REFLECTIONS   : 12422                             
REMARK 240   RESOLUTION RANGE HIGH      (A) : 3.500                             
REMARK 240   RESOLUTION RANGE LOW       (A) : 20.000                            
REMARK 240   DATA SCALING SOFTWARE          : MRC IMAGE PROCESSING PROGRAMS     
REMARK 240   COMPLETENESS FOR RANGE     (%) : 73.0                              
REMARK 240   DATA REDUNDANCY                : 6.000                             
REMARK 240 IN THE HIGHEST RESOLUTION SHELL                                      
REMARK 240   HIGHEST RESOLUTION SHELL, RANGE HIGH (A) :3.50                     
REMARK 240   HIGHEST RESOLUTION SHELL, RANGE LOW  (A) :3.70                     
REMARK 240   COMPLETENESS FOR SHELL     (%) : 73.0                              
REMARK 240   DATA REDUNDANCY IN SHELL       : NULL                              
REMARK 240   R MERGE FOR SHELL          (I) : NULL                              
REMARK 240   METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT      
REMARK 240   SOFTWARE USED                  : CCP4                              
REMARK 240   STARTING MODEL                 : PDB ENTRY 1TUB                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y+1/2,-Z                                             
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       46.75000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 6790 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 29840 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -62.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     1                                                      
REMARK 465     GLN A    35                                                      
REMARK 465     MET A    36                                                      
REMARK 465     PRO A    37                                                      
REMARK 465     SER A    38                                                      
REMARK 465     ASP A    39                                                      
REMARK 465     LYS A    40                                                      
REMARK 465     THR A    41                                                      
REMARK 465     ILE A    42                                                      
REMARK 465     GLY A    43                                                      
REMARK 465     GLY A    44                                                      
REMARK 465     GLY A    45                                                      
REMARK 465     ASP A    46                                                      
REMARK 465     ASP A    47                                                      
REMARK 465     SER A    48                                                      
REMARK 465     PHE A    49                                                      
REMARK 465     ASN A    50                                                      
REMARK 465     THR A    51                                                      
REMARK 465     PHE A    52                                                      
REMARK 465     PHE A    53                                                      
REMARK 465     SER A    54                                                      
REMARK 465     GLU A    55                                                      
REMARK 465     THR A    56                                                      
REMARK 465     GLY A    57                                                      
REMARK 465     ALA A    58                                                      
REMARK 465     GLY A    59                                                      
REMARK 465     LYS A    60                                                      
REMARK 465     VAL A   440                                                      
REMARK 465     GLU A   441                                                      
REMARK 465     GLY A   442                                                      
REMARK 465     GLU A   443                                                      
REMARK 465     GLY A   444                                                      
REMARK 465     GLU A   445                                                      
REMARK 465     GLU A   446                                                      
REMARK 465     GLU A   447                                                      
REMARK 465     GLY A   448                                                      
REMARK 465     GLU A   449                                                      
REMARK 465     GLU A   450                                                      
REMARK 465     TYR A   451                                                      
REMARK 465     MET B     1                                                      
REMARK 465     ALA B   438                                                      
REMARK 465     THR B   439                                                      
REMARK 465     ALA B   440                                                      
REMARK 465     ASP B   441                                                      
REMARK 465     GLU B   442                                                      
REMARK 465     GLN B   443                                                      
REMARK 465     GLY B   444                                                      
REMARK 465     GLU B   445                                                      
REMARK 465     PHE B   446                                                      
REMARK 465     GLU B   447                                                      
REMARK 465     GLU B   448                                                      
REMARK 465     GLU B   449                                                      
REMARK 465     GLY B   450                                                      
REMARK 465     GLU B   451                                                      
REMARK 465     GLU B   452                                                      
REMARK 465     ASP B   453                                                      
REMARK 465     GLU B   454                                                      
REMARK 465     ALA B   455                                                      
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    GLN B   281     N    TYR B   283              2.00            
REMARK 500   O    ARG A   264     N    HIS A   266              2.09            
REMARK 500   ND1  HIS B   192     OD1  ASN B   424              2.18            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    PRO A 173   C   -  N   -  CA  ANGL. DEV. =  13.9 DEGREES          
REMARK 500    MET B 235   CG  -  SD  -  CE  ANGL. DEV. =   9.8 DEGREES          
REMARK 500    PRO B 263   C   -  N   -  CA  ANGL. DEV. =  13.0 DEGREES          
REMARK 500    PRO B 263   C   -  N   -  CD  ANGL. DEV. = -13.7 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    LEU A  23      -38.40    -38.55                                   
REMARK 500    TYR A  24      -79.92    -51.82                                   
REMARK 500    GLN A  31     -179.95    -53.28                                   
REMARK 500    PRO A  32      -59.31    -29.43                                   
REMARK 500    PRO A  63     -153.10    -59.32                                   
REMARK 500    ARG A  64       44.40   -166.16                                   
REMARK 500    PRO A  89        3.88    -52.62                                   
REMARK 500    LYS A  96      -27.01    -27.21                                   
REMARK 500    GLU A  97     -131.63    -51.25                                   
REMARK 500    ALA A 100      112.24     74.05                                   
REMARK 500    ASN A 101       43.74    -73.64                                   
REMARK 500    TYR A 103      -79.70    -38.56                                   
REMARK 500    ALA A 104      -70.07    -21.27                                   
REMARK 500    TYR A 108     -116.91    -70.83                                   
REMARK 500    THR A 109      -94.31    -11.62                                   
REMARK 500    ILE A 110      -70.67    -67.63                                   
REMARK 500    GLU A 113      -38.95    -39.60                                   
REMARK 500    ASP A 116      -73.04    -40.04                                   
REMARK 500    CYS A 129     -164.38    -67.41                                   
REMARK 500    SER A 140       65.54   -112.32                                   
REMARK 500    PHE A 141      -67.81     11.54                                   
REMARK 500    SER A 147      -70.43    -81.92                                   
REMARK 500    PHE A 149      -74.64    -26.89                                   
REMARK 500    SER A 158      -18.48    -48.57                                   
REMARK 500    TYR A 161       43.93   -147.02                                   
REMARK 500    LYS A 163       44.19    -81.92                                   
REMARK 500    PRO A 173      120.01    -23.31                                   
REMARK 500    GLN A 176      -21.12   -144.28                                   
REMARK 500    VAL A 177       57.61   -103.86                                   
REMARK 500    THR A 179      -77.64   -116.06                                   
REMARK 500    GLU A 183      -63.99      6.91                                   
REMARK 500    HIS A 197      -24.22   -140.93                                   
REMARK 500    ALA A 208       -5.85    -53.64                                   
REMARK 500    LEU A 217      -23.38    176.47                                   
REMARK 500    ASP A 218      104.01     55.98                                   
REMARK 500    ILE A 219      118.89    179.74                                   
REMARK 500    ARG A 221       56.44   -113.50                                   
REMARK 500    THR A 225       -9.19    -54.01                                   
REMARK 500    GLN A 233      -62.62    -97.75                                   
REMARK 500    ILE A 238      -87.90    -73.50                                   
REMARK 500    THR A 239      -86.92    -66.65                                   
REMARK 500    ALA A 240      -90.38    -10.64                                   
REMARK 500    ASP A 245      157.58    -40.12                                   
REMARK 500    LEU A 248       43.40   -156.39                                   
REMARK 500    ASN A 249      148.41    -29.21                                   
REMARK 500    GLU A 254      -53.93    -27.87                                   
REMARK 500    PHE A 255      -88.09    -47.83                                   
REMARK 500    PRO A 263      -31.29    -30.55                                   
REMARK 500    HIS A 266      136.64    -11.37                                   
REMARK 500    ALA A 273      -71.27    -94.12                                   
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS     178 RAMACHANDRAN OUTLIERS.                        
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 900                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 501                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GTP A 500                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GDP B 600                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE TA1 B 601                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1TUB   RELATED DB: PDB                                   
REMARK 900 UNREFINED CRYSTALLOGRAPHIC MODEL OF ALPHA-BETA TUBULIN BY ELECTRON   
REMARK 900 CRYSTALLOGRAPHY                                                      
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 THE SAMPLE WAS BOVINE, BUT THE MODELED PROTEIN SEQUENCES ARE FROM    
REMARK 999 SUS SCROFA (PIG). THE AUTHORS USED THE SEQUENCES FROM THE MOST       
REMARK 999 ABUNDANT ISOTYPE OF PIG BRAIN TUBULIN. THE RESIDUES IN CHAIN B ARE   
REMARK 999 NOT SEQUENTIALLY NUMBERED. RESIDUES 44 AND 47 AND RESIDUES 360 AND   
REMARK 999 369 ARE COVALENTLY BOUND.                                            
DBREF  1JFF A    1   451  PDB    1JFF     1JFF             1    451             
DBREF  1JFF B    1   455  PDB    1JFF     1JFF             1    455             
SEQRES   1 A  451  MET ARG GLU CYS ILE SER ILE HIS VAL GLY GLN ALA GLY          
SEQRES   2 A  451  VAL GLN ILE GLY ASN ALA CYS TRP GLU LEU TYR CYS LEU          
SEQRES   3 A  451  GLU HIS GLY ILE GLN PRO ASP GLY GLN MET PRO SER ASP          
SEQRES   4 A  451  LYS THR ILE GLY GLY GLY ASP ASP SER PHE ASN THR PHE          
SEQRES   5 A  451  PHE SER GLU THR GLY ALA GLY LYS HIS VAL PRO ARG ALA          
SEQRES   6 A  451  VAL PHE VAL ASP LEU GLU PRO THR VAL ILE ASP GLU VAL          
SEQRES   7 A  451  ARG THR GLY THR TYR ARG GLN LEU PHE HIS PRO GLU GLN          
SEQRES   8 A  451  LEU ILE THR GLY LYS GLU ASP ALA ALA ASN ASN TYR ALA          
SEQRES   9 A  451  ARG GLY HIS TYR THR ILE GLY LYS GLU ILE ILE ASP LEU          
SEQRES  10 A  451  VAL LEU ASP ARG ILE ARG LYS LEU ALA ASP GLN CYS THR          
SEQRES  11 A  451  GLY LEU GLN GLY PHE SER VAL PHE HIS SER PHE GLY GLY          
SEQRES  12 A  451  GLY THR GLY SER GLY PHE THR SER LEU LEU MET GLU ARG          
SEQRES  13 A  451  LEU SER VAL ASP TYR GLY LYS LYS SER LYS LEU GLU PHE          
SEQRES  14 A  451  SER ILE TYR PRO ALA PRO GLN VAL SER THR ALA VAL VAL          
SEQRES  15 A  451  GLU PRO TYR ASN SER ILE LEU THR THR HIS THR THR LEU          
SEQRES  16 A  451  GLU HIS SER ASP CYS ALA PHE MET VAL ASP ASN GLU ALA          
SEQRES  17 A  451  ILE TYR ASP ILE CYS ARG ARG ASN LEU ASP ILE GLU ARG          
SEQRES  18 A  451  PRO THR TYR THR ASN LEU ASN ARG LEU ILE GLY GLN ILE          
SEQRES  19 A  451  VAL SER SER ILE THR ALA SER LEU ARG PHE ASP GLY ALA          
SEQRES  20 A  451  LEU ASN VAL ASP LEU THR GLU PHE GLN THR ASN LEU VAL          
SEQRES  21 A  451  PRO TYR PRO ARG GLY HIS PHE PRO LEU ALA THR TYR ALA          
SEQRES  22 A  451  PRO VAL ILE SER ALA GLU LYS ALA TYR HIS GLU GLN LEU          
SEQRES  23 A  451  SER VAL ALA GLU ILE THR ASN ALA CYS PHE GLU PRO ALA          
SEQRES  24 A  451  ASN GLN MET VAL LYS CYS ASP PRO ARG HIS GLY LYS TYR          
SEQRES  25 A  451  MET ALA CYS CYS LEU LEU TYR ARG GLY ASP VAL VAL PRO          
SEQRES  26 A  451  LYS ASP VAL ASN ALA ALA ILE ALA THR ILE LYS THR LYS          
SEQRES  27 A  451  ARG THR ILE GLN PHE VAL ASP TRP CYS PRO THR GLY PHE          
SEQRES  28 A  451  LYS VAL GLY ILE ASN TYR GLU PRO PRO THR VAL VAL PRO          
SEQRES  29 A  451  GLY GLY ASP LEU ALA LYS VAL GLN ARG ALA VAL CYS MET          
SEQRES  30 A  451  LEU SER ASN THR THR ALA ILE ALA GLU ALA TRP ALA ARG          
SEQRES  31 A  451  LEU ASP HIS LYS PHE ASP LEU MET TYR ALA LYS ARG ALA          
SEQRES  32 A  451  PHE VAL HIS TRP TYR VAL GLY GLU GLY MET GLU GLU GLY          
SEQRES  33 A  451  GLU PHE SER GLU ALA ARG GLU ASP MET ALA ALA LEU GLU          
SEQRES  34 A  451  LYS ASP TYR GLU GLU VAL GLY VAL ASP SER VAL GLU GLY          
SEQRES  35 A  451  GLU GLY GLU GLU GLU GLY GLU GLU TYR                          
SEQRES   1 B  445  MET ARG GLU ILE VAL HIS ILE GLN ALA GLY GLN CYS GLY          
SEQRES   2 B  445  ASN GLN ILE GLY ALA LYS PHE TRP GLU VAL ILE SER ASP          
SEQRES   3 B  445  GLU HIS GLY ILE ASP PRO THR GLY SER TYR HIS GLY ASP          
SEQRES   4 B  445  SER ASP LEU GLN LEU GLU ARG ILE ASN VAL TYR TYR ASN          
SEQRES   5 B  445  GLU ALA ALA GLY ASN LYS TYR VAL PRO ARG ALA ILE LEU          
SEQRES   6 B  445  VAL ASP LEU GLU PRO GLY THR MET ASP SER VAL ARG SER          
SEQRES   7 B  445  GLY PRO PHE GLY GLN ILE PHE ARG PRO ASP ASN PHE VAL          
SEQRES   8 B  445  PHE GLY GLN SER GLY ALA GLY ASN ASN TRP ALA LYS GLY          
SEQRES   9 B  445  HIS TYR THR GLU GLY ALA GLU LEU VAL ASP SER VAL LEU          
SEQRES  10 B  445  ASP VAL VAL ARG LYS GLU SER GLU SER CYS ASP CYS LEU          
SEQRES  11 B  445  GLN GLY PHE GLN LEU THR HIS SER LEU GLY GLY GLY THR          
SEQRES  12 B  445  GLY SER GLY MET GLY THR LEU LEU ILE SER LYS ILE ARG          
SEQRES  13 B  445  GLU GLU TYR PRO ASP ARG ILE MET ASN THR PHE SER VAL          
SEQRES  14 B  445  VAL PRO SER PRO LYS VAL SER ASP THR VAL VAL GLU PRO          
SEQRES  15 B  445  TYR ASN ALA THR LEU SER VAL HIS GLN LEU VAL GLU ASN          
SEQRES  16 B  445  THR ASP GLU THR TYR CYS ILE ASP ASN GLU ALA LEU TYR          
SEQRES  17 B  445  ASP ILE CYS PHE ARG THR LEU LYS LEU THR THR PRO THR          
SEQRES  18 B  445  TYR GLY ASP LEU ASN HIS LEU VAL SER ALA THR MET SER          
SEQRES  19 B  445  GLY VAL THR THR CYS LEU ARG PHE PRO GLY GLN LEU ASN          
SEQRES  20 B  445  ALA ASP LEU ARG LYS LEU ALA VAL ASN MET VAL PRO PHE          
SEQRES  21 B  445  PRO ARG LEU HIS PHE PHE MET PRO GLY PHE ALA PRO LEU          
SEQRES  22 B  445  THR SER ARG GLY SER GLN GLN TYR ARG ALA LEU THR VAL          
SEQRES  23 B  445  PRO GLU LEU THR GLN GLN MET PHE ASP ALA LYS ASN MET          
SEQRES  24 B  445  MET ALA ALA CYS ASP PRO ARG HIS GLY ARG TYR LEU THR          
SEQRES  25 B  445  VAL ALA ALA VAL PHE ARG GLY ARG MET SER MET LYS GLU          
SEQRES  26 B  445  VAL ASP GLU GLN MET LEU ASN VAL GLN ASN LYS ASN SER          
SEQRES  27 B  445  SER TYR PHE VAL GLU TRP ILE PRO ASN ASN VAL LYS THR          
SEQRES  28 B  445  ALA VAL CYS ASP ILE PRO PRO ARG GLY LEU LYS MET SER          
SEQRES  29 B  445  ALA THR PHE ILE GLY ASN SER THR ALA ILE GLN GLU LEU          
SEQRES  30 B  445  PHE LYS ARG ILE SER GLU GLN PHE THR ALA MET PHE ARG          
SEQRES  31 B  445  ARG LYS ALA PHE LEU HIS TRP TYR THR GLY GLU GLY MET          
SEQRES  32 B  445  ASP GLU MET GLU PHE THR GLU ALA GLU SER ASN MET ASN          
SEQRES  33 B  445  ASP LEU VAL SER GLU TYR GLN GLN TYR GLN ASP ALA THR          
SEQRES  34 B  445  ALA ASP GLU GLN GLY GLU PHE GLU GLU GLU GLY GLU GLU          
SEQRES  35 B  445  ASP GLU ALA                                                  
HET     ZN  A 900       1                                                       
HET     MG  A 501       1                                                       
HET    GTP  A 500      32                                                       
HET    GDP  B 600      28                                                       
HET    TA1  B 601      62                                                       
HETNAM      ZN ZINC ION                                                         
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     GTP GUANOSINE-5'-TRIPHOSPHATE                                        
HETNAM     GDP GUANOSINE-5'-DIPHOSPHATE                                         
HETNAM     TA1 TAXOL                                                            
FORMUL   3   ZN    ZN 2+                                                        
FORMUL   4   MG    MG 2+                                                        
FORMUL   5  GTP    C10 H16 N5 O14 P3                                            
FORMUL   6  GDP    C10 H15 N5 O11 P2                                            
FORMUL   7  TA1    C47 H51 N O14                                                
HELIX    1   1 GLY A   10  GLU A   27  1                                  18    
HELIX    2   2 GLU A   71  GLY A   81  1                                  11    
HELIX    3   3 ASN A  102  TYR A  108  1                                   7    
HELIX    4   4 TYR A  108  CYS A  129  1                                  22    
HELIX    5   5 SER A  147  TYR A  161  1                                  15    
HELIX    6   6 GLU A  183  LEU A  195  1                                  13    
HELIX    7   7 ASP A  205  ASN A  216  1                                  12    
HELIX    8   8 THR A  223  ARG A  243  1                                  21    
HELIX    9   9 ASP A  251  VAL A  260  1                                  10    
HELIX   10  10 SER A  287  THR A  292  1                                   6    
HELIX   11  11 THR A  292  GLU A  297  1                                   6    
HELIX   12  12 VAL A  324  THR A  337  1                                  14    
HELIX   13  13 ILE A  384  ALA A  400  1                                  17    
HELIX   14  14 LYS A  401  PHE A  404  5                                   4    
HELIX   15  15 VAL A  405  GLY A  410  1                                   6    
HELIX   16  16 GLU A  414  LYS A  430  1                                  17    
HELIX   17  17 LYS A  430  VAL A  435  1                                   6    
HELIX   18  18 GLN B   11  GLU B   27  1                                  17    
HELIX   19  19 ARG B   48  TYR B   53  5                                   6    
HELIX   20  20 GLU B   71  ARG B   79  1                                   9    
HELIX   21  21 PRO B   82  ILE B   86  5                                   5    
HELIX   22  22 ARG B   88  ASP B   90  5                                   3    
HELIX   23  23 GLU B  110  GLU B  127  1                                  18    
HELIX   24  24 GLY B  143  TYR B  161  1                                  19    
HELIX   25  25 GLU B  183  VAL B  195  1                                  13    
HELIX   26  26 ASP B  205  ARG B  215  1                                  11    
HELIX   27  27 THR B  223  ARG B  243  1                                  21    
HELIX   28  28 ASP B  251  VAL B  260  1                                  10    
HELIX   29  29 VAL B  288  PHE B  296  1                                   9    
HELIX   30  30 ASP B  306  GLY B  310  5                                   5    
HELIX   31  31 SER B  324  ASN B  339  1                                  16    
HELIX   32  32 ILE B  384  ARG B  400  1                                  17    
HELIX   33  33 LYS B  402  PHE B  404  5                                   3    
HELIX   34  34 LEU B  405  GLY B  410  1                                   6    
HELIX   35  35 ASP B  414  ASP B  437  1                                  24    
SHEET    1   A 6 LEU A  92  THR A  94  0                                        
SHEET    2   A 6 ALA A  65  ASP A  69  1  O  PHE A  67   N  ILE A  93           
SHEET    3   A 6 CYS A   4  VAL A   9  1  O  SER A   6   N  VAL A  66           
SHEET    4   A 6 GLY A 134  HIS A 139  1  O  GLY A 134   N  ILE A   5           
SHEET    5   A 6 LEU A 167  SER A 170  1  O  LEU A 167   N  VAL A 137           
SHEET    6   A 6 CYS A 200  MET A 203  1  O  CYS A 200   N  GLU A 168           
SHEET    1   B 4 LEU A 269  THR A 271  0                                        
SHEET    2   B 4 ARG A 373  THR A 381 -1  O  MET A 377   N  THR A 271           
SHEET    3   B 4 TYR A 312  GLY A 321 -1  N  MET A 313   O  ASN A 380           
SHEET    4   B 4 PHE A 351  ILE A 355  1  N  LYS A 352   O  CYS A 315           
SHEET    1   C10 PHE B  92  PHE B  94  0                                        
SHEET    2   C10 ALA B  65  ASP B  69  1  O  LEU B  67   N  VAL B  93           
SHEET    3   C10 HIS B   6  ALA B   9  1  O  HIS B   6   N  ILE B  66           
SHEET    4   C10 GLY B 134  HIS B 139  1  O  GLN B 136   N  ILE B   7           
SHEET    5   C10 ILE B 165  SER B 170  1  O  ILE B 165   N  PHE B 135           
SHEET    6   C10 GLU B 200  TYR B 202  1  O  GLU B 200   N  THR B 168           
SHEET    7   C10 PHE B 267  GLY B 271  1  N  PHE B 268   O  THR B 201           
SHEET    8   C10 ALA B 375  SER B 381 -1  N  PHE B 377   O  GLY B 271           
SHEET    9   C10 TYR B 312  ARG B 320 -1  N  LEU B 313   O  ASN B 380           
SHEET   10   C10 VAL B 351  CYS B 356  1  N  LYS B 352   O  VAL B 315           
LINK         O1G GTP A 500                MG    MG A 501     1555   1555  2.45  
SITE     1 AC1  1 HIS A 283                                                     
SITE     1 AC2  3 GLN A  11  GLU A  71  GTP A 500                               
SITE     1 AC3 20 GLY A  10  GLN A  11  ALA A  12  GLN A  15                    
SITE     2 AC3 20 ALA A  99  ALA A 100  ASN A 101  SER A 140                    
SITE     3 AC3 20 GLY A 143  GLY A 144  THR A 145  GLY A 146                    
SITE     4 AC3 20 ILE A 171  GLU A 183  ASN A 206  TYR A 224                    
SITE     5 AC3 20 ASN A 228   MG A 501  LEU B 248  LYS B 254                    
SITE     1 AC4 13 GLY B  10  GLN B  11  CYS B  12  GLN B  15                    
SITE     2 AC4 13 SER B 140  GLY B 142  GLY B 144  THR B 145                    
SITE     3 AC4 13 GLY B 146  ASP B 179  ASN B 206  TYR B 224                    
SITE     4 AC4 13 ASN B 228                                                     
SITE     1 AC5 15 VAL B  23  ASP B  26  GLU B  27  HIS B 229                    
SITE     2 AC5 15 LEU B 230  ALA B 233  SER B 236  PHE B 272                    
SITE     3 AC5 15 PRO B 274  LEU B 275  THR B 276  ARG B 278                    
SITE     4 AC5 15 PRO B 360  ARG B 369  GLY B 370                               
CRYST1   81.200   93.500   90.000  90.00  90.00  90.00 P 1 21 1      2          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.012315  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010695  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.011111        0.00000