HEADER    NEUROTOXIN                              14-APR-95   1AGT              
TITLE     SOLUTION STRUCTURE OF THE POTASSIUM CHANNEL INHIBITOR AGITOXIN 2:     
TITLE    2 CALIPER FOR PROBING CHANNEL GEOMETRY                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: AGITOXIN 2;                                                
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: LEIURUS QUINQUESTRIATUS HEBRAEUS;               
SOURCE   3 ORGANISM_TAXID: 6884;                                                
SOURCE   4 STRAIN: HEBRAEUS;                                                    
SOURCE   5 GENE: AGTX2;                                                         
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_PLASMID: PCSP105;                                  
SOURCE   9 EXPRESSION_SYSTEM_GENE: AGTX2                                        
KEYWDS    POTASSIUM CHANNEL BLOCKER, NEUROTOXIN                                 
EXPDTA    SOLUTION NMR                                                          
NUMMDL    17                                                                    
AUTHOR    A.M.KREZEL,C.KASIBHATLA,P.HIDALGO,R.MACKINNON,G.WAGNER                
REVDAT   4   20-NOV-24 1AGT    1       REMARK                                   
REVDAT   3   29-NOV-17 1AGT    1       REMARK HELIX                             
REVDAT   2   24-FEB-09 1AGT    1       VERSN                                    
REVDAT   1   10-JUL-95 1AGT    0                                                
JRNL        AUTH   A.M.KREZEL,C.KASIBHATLA,P.HIDALGO,R.MACKINNON,G.WAGNER       
JRNL        TITL   SOLUTION STRUCTURE OF THE POTASSIUM CHANNEL INHIBITOR        
JRNL        TITL 2 AGITOXIN 2: CALIPER FOR PROBING CHANNEL GEOMETRY.            
JRNL        REF    PROTEIN SCI.                  V.   4  1478 1995              
JRNL        REFN                   ISSN 0961-8368                               
JRNL        PMID   8520473                                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION. NOT APPLICABLE.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : NMRCHITECT 2.3, DISCOVER 2.9                         
REMARK   3   AUTHORS     : BIOSYM TECHNOLOGIES (NMRCHITECT), BIOSYM             
REMARK   3                 TECHNOLOGIES (DISCOVER)                              
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1AGT COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000170798.                                   
REMARK 210                                                                      
REMARK 210 EXPERIMENTAL DETAILS                                                 
REMARK 210  EXPERIMENT TYPE                : NMR                                
REMARK 210  TEMPERATURE           (KELVIN) : NULL                               
REMARK 210  PH                             : NULL                               
REMARK 210  IONIC STRENGTH                 : NULL                               
REMARK 210  PRESSURE                       : NULL                               
REMARK 210  SAMPLE CONTENTS                : NULL                               
REMARK 210                                                                      
REMARK 210  NMR EXPERIMENTS CONDUCTED      : NULL                               
REMARK 210  SPECTROMETER FIELD STRENGTH    : NULL                               
REMARK 210  SPECTROMETER MODEL             : NULL                               
REMARK 210  SPECTROMETER MANUFACTURER      : NULL                               
REMARK 210                                                                      
REMARK 210  STRUCTURE DETERMINATION.                                            
REMARK 210   SOFTWARE USED                 : NULL                               
REMARK 210   METHOD USED                   : NULL                               
REMARK 210                                                                      
REMARK 210 CONFORMERS, NUMBER CALCULATED   : NULL                               
REMARK 210 CONFORMERS, NUMBER SUBMITTED    : 17                                 
REMARK 210 CONFORMERS, SELECTION CRITERIA  : NULL                               
REMARK 210                                                                      
REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL                
REMARK 210                                                                      
REMARK 210 REMARK: NULL                                                         
REMARK 215                                                                      
REMARK 215 NMR STUDY                                                            
REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION           
REMARK 215 NMR DATA.  PROTEIN DATA BANK CONVENTIONS REQUIRE THAT                
REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON              
REMARK 215 THESE RECORDS ARE MEANINGLESS.                                       
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: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
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 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500 10 HIS A  34   CG    HIS A  34   CD2     0.055                       
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  1 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500  1 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500  1 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.1 DEGREES          
REMARK 500  2 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500  2 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500  2 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500  3 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500  3 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500  3 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500  4 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500  4 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500  4 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   7.9 DEGREES          
REMARK 500  5 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500  5 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   4.0 DEGREES          
REMARK 500  5 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.1 DEGREES          
REMARK 500  6 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500  6 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500  6 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500  7 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500  7 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500  7 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500  8 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500  8 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500  8 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500  9 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500  9 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.9 DEGREES          
REMARK 500  9 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500 10 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500 10 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500 10 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.1 DEGREES          
REMARK 500 11 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.6 DEGREES          
REMARK 500 11 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500 11 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500 12 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500 12 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500 12 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   7.9 DEGREES          
REMARK 500 13 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500 13 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500 13 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500 14 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500 14 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500 14 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.0 DEGREES          
REMARK 500 15 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500 15 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500 15 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   8.1 DEGREES          
REMARK 500 16 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500 16 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500 16 HIS A  34   ND1 -  CE1 -  NE2 ANGL. DEV. =   7.9 DEGREES          
REMARK 500 17 ARG A  24   NE  -  CZ  -  NH1 ANGL. DEV. =   3.8 DEGREES          
REMARK 500 17 ARG A  31   NE  -  CZ  -  NH1 ANGL. DEV. =   3.7 DEGREES          
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS      51 ANGLE DEVIATIONS.                             
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  2 ASN A  30       99.64    -63.29                                   
REMARK 500  2 ARG A  31       15.24     58.83                                   
REMARK 500  3 ARG A  24      -71.24    -79.48                                   
REMARK 500  3 ASN A  30       99.83    -62.11                                   
REMARK 500  3 ARG A  31       13.50     58.63                                   
REMARK 500  4 ARG A  24      -74.84    -80.30                                   
REMARK 500  4 ARG A  31       15.61     59.25                                   
REMARK 500  6 ARG A  24      -74.55    -83.51                                   
REMARK 500  6 ASN A  30       94.16    -63.74                                   
REMARK 500  7 ARG A  24      -72.45    -81.78                                   
REMARK 500  7 ASN A  30       99.66    -63.47                                   
REMARK 500  7 ARG A  31       16.81     59.72                                   
REMARK 500  8 ASN A  30       98.41    -63.51                                   
REMARK 500  9 ASN A  30       98.69    -63.60                                   
REMARK 500 10 ARG A  24      -73.43    -81.21                                   
REMARK 500 10 ASN A  30       98.91    -61.91                                   
REMARK 500 10 ARG A  31       13.14     56.44                                   
REMARK 500 11 ARG A  24      -72.15    -93.37                                   
REMARK 500 11 ASN A  30       99.12    -63.42                                   
REMARK 500 11 ARG A  31       19.31     55.60                                   
REMARK 500 13 ASN A  30       98.17    -63.86                                   
REMARK 500 14 ARG A  24      -72.14    -80.35                                   
REMARK 500 14 ASN A  30       98.78    -62.85                                   
REMARK 500 14 ARG A  31       15.39     57.15                                   
REMARK 500 15 ARG A  24      -62.37    -90.05                                   
REMARK 500 16 VAL A   2       93.05     67.18                                   
REMARK 500 16 ARG A  24      -73.94    -84.90                                   
REMARK 500 17 VAL A   2       80.26     40.76                                   
REMARK 500 17 ARG A  24      -74.47    -93.87                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1AGT A    1    38  UNP    P46111   SCA2_LEIQH       1     38             
SEQRES   1 A   38  GLY VAL PRO ILE ASN VAL SER CYS THR GLY SER PRO GLN          
SEQRES   2 A   38  CYS ILE LYS PRO CYS LYS ASP ALA GLY MET ARG PHE GLY          
SEQRES   3 A   38  LYS CYS MET ASN ARG LYS CYS HIS CYS THR PRO LYS              
HELIX    1  H1 SER A   11  CYS A   14  5                                   4    
HELIX    2  H2 CYS A   14  GLY A   22  1                                   9    
SHEET    1  S1 3 VAL A   2  CYS A   8  0                                        
SHEET    2  S1 3 LYS A  32  THR A  36 -1  N  CYS A  35   O  VAL A   2           
SHEET    3  S1 3 ARG A  24  MET A  29 -1  N  LYS A  27   O  HIS A  34           
SSBOND   1 CYS A    8    CYS A   28                          1555   1555  1.99  
SSBOND   2 CYS A   14    CYS A   33                          1555   1555  1.99  
SSBOND   3 CYS A   18    CYS A   35                          1555   1555  2.00  
CRYST1    1.000    1.000    1.000  90.00  90.00  90.00 P 1           1          
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      1.000000  0.000000  0.000000        0.00000                         
SCALE2      0.000000  1.000000  0.000000        0.00000                         
SCALE3      0.000000  0.000000  1.000000        0.00000                         
MODEL        1