HEADER    NEUROTOXIN                              15-SEP-97   1M2C              
TITLE     THREE-DIMENSIONAL STRUCTURE OF ALPHA-CONOTOXIN MII, NMR, 14 STRUCTURES
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ALPHA-CONOTOXIN MII;                                       
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: CONUS MAGUS;                                    
SOURCE   3 ORGANISM_COMMON: MAGUS CONE;                                         
SOURCE   4 ORGANISM_TAXID: 6492                                                 
KEYWDS    NEUROTOXIN, NEURONAL NICOTINIC ACETYLCHOLINE RECEPTOR INHIBITOR,      
KEYWDS   2 SUBTYPE SPECIFIC LIGAND, PRESYNAPTIC NICOTINIC ACETYLCHOLINE         
KEYWDS   3 RECEPTOR BLOCKER, CHOLINERGIC MODULATION, DOPAMINE RELEASE           
EXPDTA    SOLUTION NMR                                                          
NUMMDL    14                                                                    
AUTHOR    K.J.SHON,S.C.KOERBER,J.E.RIVIER,B.M.OLIVERA,J.M.MCINTOSH              
REVDAT   6   30-OCT-24 1M2C    1       REMARK                                   
REVDAT   5   23-FEB-22 1M2C    1       REMARK LINK                              
REVDAT   4   24-FEB-09 1M2C    1       VERSN                                    
REVDAT   3   01-APR-03 1M2C    1       JRNL                                     
REVDAT   2   13-JAN-99 1M2C    3       COMPND REMARK TITLE  HETATM              
REVDAT   2 2                   3       HEADER TER    SOURCE SEQRES              
REVDAT   2 3                   3       FORMUL JRNL   KEYWDS CONECT              
REVDAT   1   09-DEC-98 1M2C    0                                                
JRNL        AUTH   G.E.CARTIER,D.YOSHIKAMI,W.R.GRAY,S.LUO,B.M.OLIVERA,          
JRNL        AUTH 2 J.M.MCINTOSH                                                 
JRNL        TITL   A NEW ALPHA-CONOTOXIN WHICH TARGETS ALPHA3BETA2 NICOTINIC    
JRNL        TITL 2 ACETYLCHOLINE RECEPTORS.                                     
JRNL        REF    J.BIOL.CHEM.                  V. 271  7522 1996              
JRNL        REFN                   ISSN 0021-9258                               
JRNL        PMID   8631783                                                      
JRNL        DOI    10.1074/JBC.271.13.7522                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION. NOT APPLICABLE.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : INSIGHT II II                                        
REMARK   3   AUTHORS     : MSI                                                  
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1M2C 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_1000174892.                                   
REMARK 210                                                                      
REMARK 210 EXPERIMENTAL DETAILS                                                 
REMARK 210  EXPERIMENT TYPE                : NMR                                
REMARK 210  TEMPERATURE           (KELVIN) : 275                                
REMARK 210  PH                             : 3.3                                
REMARK 210  IONIC STRENGTH                 : 5MM SODIUM PHOSPHATE BUFFER        
REMARK 210  PRESSURE                       : 1 ATM                              
REMARK 210  SAMPLE CONTENTS                : 90% H2O / 10% D2O                  
REMARK 210                                                                      
REMARK 210  NMR EXPERIMENTS CONDUCTED      : NOESY; TOCSY; DQF-COSY; PE-COSY    
REMARK 210  SPECTROMETER FIELD STRENGTH    : 600 MHZ                            
REMARK 210  SPECTROMETER MODEL             : UNITYPLUS                          
REMARK 210  SPECTROMETER MANUFACTURER      : VARIAN                             
REMARK 210                                                                      
REMARK 210  STRUCTURE DETERMINATION.                                            
REMARK 210   SOFTWARE USED                 : VARIAN VNMR VNMR, MSI FELIX        
REMARK 210                                   FELIX, INSIGHT II II, DISCOVER     
REMARK 210   METHOD USED                   : DISTANCE GEOMETRY, ITERATIVE       
REMARK 210                                   RELAXATION MATRIX APPROACH,        
REMARK 210                                   SIMULATED ANNEALING                
REMARK 210                                                                      
REMARK 210 CONFORMERS, NUMBER CALCULATED   : 50                                 
REMARK 210 CONFORMERS, NUMBER SUBMITTED    : 14                                 
REMARK 210 CONFORMERS, SELECTION CRITERIA  : LOWEST ENERGY                      
REMARK 210                                                                      
REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1                   
REMARK 210                                                                      
REMARK 210 REMARK: THE STRUCTURE WAS DETERMINED USING 2-D HOMONUCLEAR 1H NMR    
REMARK 210  EXPERIMENTS. THESE ARE A SET OF NOESY, TOCSY, DQF-COSY, AND PE-     
REMARK 210  COSY.                                                               
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  1 GLU A  11   CD    GLU A  11   OE2     0.111                       
REMARK 500  1 HIS A  12   CG    HIS A  12   CD2     0.056                       
REMARK 500  2 GLU A  11   CD    GLU A  11   OE2     0.107                       
REMARK 500  2 HIS A  12   CG    HIS A  12   CD2     0.056                       
REMARK 500  3 GLU A  11   CD    GLU A  11   OE2     0.109                       
REMARK 500  3 HIS A  12   CG    HIS A  12   CD2     0.056                       
REMARK 500  4 GLU A  11   CD    GLU A  11   OE2     0.106                       
REMARK 500  4 HIS A  12   CG    HIS A  12   CD2     0.058                       
REMARK 500  5 GLU A  11   CD    GLU A  11   OE2     0.106                       
REMARK 500  5 HIS A  12   CG    HIS A  12   CD2     0.057                       
REMARK 500  6 GLU A  11   CD    GLU A  11   OE2     0.110                       
REMARK 500  6 HIS A  12   CG    HIS A  12   CD2     0.054                       
REMARK 500  7 GLU A  11   CD    GLU A  11   OE2     0.106                       
REMARK 500  7 HIS A  12   CG    HIS A  12   CD2     0.059                       
REMARK 500  8 GLU A  11   CD    GLU A  11   OE2     0.107                       
REMARK 500  9 GLU A  11   CD    GLU A  11   OE2     0.110                       
REMARK 500  9 HIS A  12   CG    HIS A  12   CD2     0.058                       
REMARK 500 10 GLU A  11   CD    GLU A  11   OE2     0.110                       
REMARK 500 10 HIS A  12   CG    HIS A  12   CD2     0.056                       
REMARK 500 11 GLU A  11   CD    GLU A  11   OE2     0.108                       
REMARK 500 12 GLU A  11   CD    GLU A  11   OE2     0.111                       
REMARK 500 12 HIS A  12   CG    HIS A  12   CD2     0.060                       
REMARK 500 13 GLU A  11   CD    GLU A  11   OE2     0.110                       
REMARK 500 13 HIS A  12   CG    HIS A  12   CD2     0.055                       
REMARK 500 14 GLU A  11   CD    GLU A  11   OE2     0.106                       
REMARK 500 14 HIS A  12   CG    HIS A  12   CD2     0.060                       
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 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  15.3 DEGREES          
REMARK 500  2 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  15.0 DEGREES          
REMARK 500  3 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  20.3 DEGREES          
REMARK 500  3 LEU A  15   CB  -  CG  -  CD2 ANGL. DEV. =  10.9 DEGREES          
REMARK 500  4 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  14.9 DEGREES          
REMARK 500  5 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  22.6 DEGREES          
REMARK 500  6 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  15.2 DEGREES          
REMARK 500  6 GLU A  11   N   -  CA  -  CB  ANGL. DEV. = -10.9 DEGREES          
REMARK 500  6 HIS A  12   CA  -  CB  -  CG  ANGL. DEV. =  10.9 DEGREES          
REMARK 500  6 LEU A  15   N   -  CA  -  CB  ANGL. DEV. = -16.1 DEGREES          
REMARK 500  7 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  15.3 DEGREES          
REMARK 500  8 CYS A   2   CB  -  CA  -  C   ANGL. DEV. =   9.1 DEGREES          
REMARK 500  8 CYS A   2   CA  -  CB  -  SG  ANGL. DEV. =   7.4 DEGREES          
REMARK 500  8 CYS A   3   N   -  CA  -  CB  ANGL. DEV. = -12.4 DEGREES          
REMARK 500  8 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  20.7 DEGREES          
REMARK 500  9 CYS A   3   N   -  CA  -  CB  ANGL. DEV. = -14.3 DEGREES          
REMARK 500  9 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  12.3 DEGREES          
REMARK 500  9 CYS A  16   N   -  CA  -  CB  ANGL. DEV. = -12.3 DEGREES          
REMARK 500 10 CYS A   3   N   -  CA  -  CB  ANGL. DEV. = -12.1 DEGREES          
REMARK 500 10 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  22.1 DEGREES          
REMARK 500 11 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  15.3 DEGREES          
REMARK 500 12 CYS A   3   N   -  CA  -  CB  ANGL. DEV. = -14.2 DEGREES          
REMARK 500 12 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  14.9 DEGREES          
REMARK 500 12 LEU A  15   N   -  CA  -  CB  ANGL. DEV. = -19.3 DEGREES          
REMARK 500 13 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  14.4 DEGREES          
REMARK 500 14 HIS A   9   CA  -  CB  -  CG  ANGL. DEV. =  22.2 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  1 GLU A  11      -38.96    -38.09                                   
REMARK 500  4 GLU A  11      -34.93    -31.94                                   
REMARK 500  5 GLU A  11      -37.41    -36.64                                   
REMARK 500  6 VAL A   7      -62.22   -105.73                                   
REMARK 500  6 GLU A  11      -38.81    -36.52                                   
REMARK 500  9 GLU A  11      -35.55    -30.19                                   
REMARK 500 10 GLU A  11      -39.40    -31.75                                   
REMARK 500 11 GLU A  11      -49.36    -14.57                                   
REMARK 500 12 GLU A  11      -39.10    -30.85                                   
REMARK 500 12 SER A  13       14.74    -28.44                                   
REMARK 500 13 CYS A   3      -39.47    -35.67                                   
REMARK 500 13 GLU A  11      -38.28    -38.20                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS                                         
REMARK 500                                                                      
REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH          
REMARK 500 CIS AND TRANS CONFORMATION.  CIS BONDS, IF ANY, ARE LISTED           
REMARK 500 ON CISPEP RECORDS.  TRANS IS DEFINED AS 180 +/- 30 AND               
REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES.                                  
REMARK 500                                 MODEL     OMEGA                      
REMARK 500 SER A   13     ASN A   14          1       148.28                    
REMARK 500 LEU A   10     GLU A   11          2       146.94                    
REMARK 500 SER A   13     ASN A   14          2       148.66                    
REMARK 500 LEU A   15     CYS A   16          2       148.37                    
REMARK 500 CYS A    8     HIS A    9          3       146.37                    
REMARK 500 LEU A   10     GLU A   11          3       142.93                    
REMARK 500 LEU A   10     GLU A   11          4       139.29                    
REMARK 500 SER A    4     ASN A    5          5       147.80                    
REMARK 500 LEU A   10     GLU A   11          5       145.17                    
REMARK 500 LEU A   10     GLU A   11          6       145.37                    
REMARK 500 SER A   13     ASN A   14          6       144.79                    
REMARK 500 LEU A   15     CYS A   16          7       136.67                    
REMARK 500 VAL A    7     CYS A    8          8       143.76                    
REMARK 500 CYS A    2     CYS A    3          9       148.34                    
REMARK 500 LEU A   10     GLU A   11          9       142.65                    
REMARK 500 SER A    4     ASN A    5         10       147.73                    
REMARK 500 LEU A   10     GLU A   11         10       135.48                    
REMARK 500 LEU A   10     GLU A   11         11       132.41                    
REMARK 500 LEU A   15     CYS A   16         11       146.16                    
REMARK 500 LEU A   10     GLU A   11         12       145.26                    
REMARK 500 HIS A   12     SER A   13         12      -122.09                    
REMARK 500 SER A   13     ASN A   14         12       146.21                    
REMARK 500 SER A   13     ASN A   14         13       146.30                    
REMARK 500 LEU A   15     CYS A   16         13       146.47                    
REMARK 500 LEU A   10     GLU A   11         14       143.40                    
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500  1 HIS A   9         0.11    SIDE CHAIN                              
REMARK 500  3 HIS A   9         0.20    SIDE CHAIN                              
REMARK 500  4 HIS A   9         0.10    SIDE CHAIN                              
REMARK 500  4 HIS A  12         0.12    SIDE CHAIN                              
REMARK 500  5 HIS A   9         0.15    SIDE CHAIN                              
REMARK 500  6 HIS A   9         0.14    SIDE CHAIN                              
REMARK 500  7 HIS A   9         0.16    SIDE CHAIN                              
REMARK 500  8 HIS A   9         0.15    SIDE CHAIN                              
REMARK 500  8 HIS A  12         0.19    SIDE CHAIN                              
REMARK 500  9 HIS A   9         0.11    SIDE CHAIN                              
REMARK 500  9 HIS A  12         0.12    SIDE CHAIN                              
REMARK 500 10 HIS A   9         0.15    SIDE CHAIN                              
REMARK 500 11 HIS A  12         0.18    SIDE CHAIN                              
REMARK 500 12 HIS A   9         0.11    SIDE CHAIN                              
REMARK 500 12 HIS A  12         0.10    SIDE CHAIN                              
REMARK 500 13 HIS A   9         0.13    SIDE CHAIN                              
REMARK 500 14 HIS A   9         0.17    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1M2C A    1    16  UNP    P56636   CXA2_CONMA       1     16             
SEQRES   1 A   17  GLY CYS CYS SER ASN PRO VAL CYS HIS LEU GLU HIS SER          
SEQRES   2 A   17  ASN LEU CYS NH2                                              
HET    NH2  A  17H      3                                                       
HETNAM     NH2 AMINO GROUP                                                      
FORMUL   1  NH2    H2 N                                                         
HELIX    1   1 CYS A    8  GLU A   11  1                                   4    
SSBOND   1 CYS A    2    CYS A    8                          1555   1555  2.02  
SSBOND   2 CYS A    3    CYS A   16                          1555   1555  2.01  
LINK         C   CYS A  16                 N   NH2 A  17H    1555   1555  1.32  
CISPEP   1 GLY A    1    CYS A    2          1        -6.64                     
CISPEP   2 GLY A    1    CYS A    2          4        -3.04                     
CISPEP   3 GLY A    1    CYS A    2          5        -0.91                     
CISPEP   4 GLY A    1    CYS A    2         10         0.14                     
CISPEP   5 GLY A    1    CYS A    2         11        -6.04                     
CISPEP   6 GLY A    1    CYS A    2         13        -6.10                     
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