HEADER    TOXIN                                   14-APR-98   1IMT              
TITLE     MAMBA INTESTINAL TOXIN 1, NMR, 39 STRUCTURES                          
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: INTESTINAL TOXIN 1;                                        
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: MIT1                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: DENDROASPIS POLYLEPIS POLYLEPIS;                
SOURCE   3 ORGANISM_COMMON: BLACK MAMBA;                                        
SOURCE   4 ORGANISM_TAXID: 8620;                                                
SOURCE   5 STRAIN: POLYLEPIS;                                                   
SOURCE   6 SECRETION: VENOM                                                     
KEYWDS    VENOM, STRUCTURAL HOMOLOGUE OF COLIPASE, RESISTANCE TO ENDOPROTEASES, 
KEYWDS   2 CONTRACT GUINEA PIG ILEUM, TOXIN                                     
EXPDTA    SOLUTION NMR                                                          
NUMMDL    39                                                                    
AUTHOR    J.BOISBOUVIER,J.-P.ALBRAND,M.BLACKLEDGE,M.JAQUINOD,H.SCHWEITZ,        
AUTHOR   2 M.LAZDUNSKI,D.MARION                                                 
REVDAT   4   20-NOV-24 1IMT    1       REMARK                                   
REVDAT   3   23-FEB-22 1IMT    1       REMARK SEQADV                            
REVDAT   2   24-FEB-09 1IMT    1       VERSN                                    
REVDAT   1   20-APR-99 1IMT    0                                                
JRNL        AUTH   J.BOISBOUVIER,J.P.ALBRAND,M.BLACKLEDGE,M.JAQUINOD,           
JRNL        AUTH 2 H.SCHWEITZ,M.LAZDUNSKI,D.MARION                              
JRNL        TITL   A STRUCTURAL HOMOLOGUE OF COLIPASE IN BLACK MAMBA VENOM      
JRNL        TITL 2 REVEALED BY NMR FLOATING DISULPHIDE BRIDGE ANALYSIS.         
JRNL        REF    J.MOL.BIOL.                   V. 283   205 1998              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   9761684                                                      
JRNL        DOI    10.1006/JMBI.1998.2057                                       
REMARK   2                                                                      
REMARK   2 RESOLUTION. NOT APPLICABLE.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : DISCOVER                                             
REMARK   3   AUTHORS     : BIOSYM/MSI                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: REFINEMENT DETAILS CAN BE FOUND IN THE    
REMARK   3  JRNL CITATION: BLACKLEDGE, M. ET AL. (1995). J. MOL. BIOL. 245,     
REMARK   3  PP661-681                                                           
REMARK   4                                                                      
REMARK   4 1IMT 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_1000174202.                                   
REMARK 210                                                                      
REMARK 210 EXPERIMENTAL DETAILS                                                 
REMARK 210  EXPERIMENT TYPE                : NMR                                
REMARK 210  TEMPERATURE           (KELVIN) : 305                                
REMARK 210  PH                             : 4.5                                
REMARK 210  IONIC STRENGTH                 : NULL                               
REMARK 210  PRESSURE                       : NULL                               
REMARK 210  SAMPLE CONTENTS                : H2O OR D2O                         
REMARK 210                                                                      
REMARK 210  NMR EXPERIMENTS CONDUCTED      : NOESY; TOCSY; COSY; HSQC; HSQC     
REMARK 210                                   -TOCSY                             
REMARK 210  SPECTROMETER FIELD STRENGTH    : 600 MHZ                            
REMARK 210  SPECTROMETER MODEL             : AMX600                             
REMARK 210  SPECTROMETER MANUFACTURER      : BRUKER                             
REMARK 210                                                                      
REMARK 210  STRUCTURE DETERMINATION.                                            
REMARK 210   SOFTWARE USED                 : DISCOVER                           
REMARK 210   METHOD USED                   : RESTRAINED SIMULATED ANNEALING     
REMARK 210                                   AND RESTRAINED MOLECULAR           
REMARK 210                                   DYNAMICS ENERGY REFINEMENT         
REMARK 210                                                                      
REMARK 210 CONFORMERS, NUMBER CALCULATED   : 110                                
REMARK 210 CONFORMERS, NUMBER SUBMITTED    : 39                                 
REMARK 210 CONFORMERS, SELECTION CRITERIA  : LEAST RESTRAINT VIOLATION AND      
REMARK 210                                   BEST PHYSICAL ENERGY               
REMARK 210                                                                      
REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 2                   
REMARK 210                                                                      
REMARK 210 REMARK: MODEL NUMBER 2 WAS DETERMINED USING 2D NMR SPECTROSCOPY ON   
REMARK 210  PURIFIED TOXIN.                                                     
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: 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   8      -32.29   -136.13                                   
REMARK 500  1 CYS A  13      -52.22   -138.91                                   
REMARK 500  1 SER A  37      108.52    -38.86                                   
REMARK 500  1 LYS A  47      161.36    -48.08                                   
REMARK 500  1 MET A  55      -40.54     74.10                                   
REMARK 500  1 ASN A  64       35.79    -87.40                                   
REMARK 500  2 THR A   4       33.10    -74.85                                   
REMARK 500  2 CYS A  13      -60.67    -99.28                                   
REMARK 500  2 CYS A  31       99.55    -69.48                                   
REMARK 500  2 SER A  37      111.83    -36.31                                   
REMARK 500  2 LYS A  73      -39.81     71.48                                   
REMARK 500  2 LYS A  74       81.73    -66.20                                   
REMARK 500  2 SER A  79       37.79    -79.28                                   
REMARK 500  3 ILE A   3       67.54   -118.91                                   
REMARK 500  3 LYS A  15      -35.24    -39.17                                   
REMARK 500  3 LYS A  26       -0.08    -57.99                                   
REMARK 500  3 SER A  37      107.53    -41.05                                   
REMARK 500  3 LYS A  47      156.48    -48.88                                   
REMARK 500  3 PRO A  63      -43.49    -24.64                                   
REMARK 500  3 LYS A  73      -44.36     71.64                                   
REMARK 500  4 GLU A   8      -36.17   -131.12                                   
REMARK 500  4 CYS A  13     -119.55   -104.04                                   
REMARK 500  4 LYS A  15       83.67    -53.89                                   
REMARK 500  4 LYS A  26       -1.38    -58.76                                   
REMARK 500  4 CYS A  31       99.91    -65.55                                   
REMARK 500  4 SER A  45       91.12    -67.34                                   
REMARK 500  4 HIS A  46      134.06    -23.99                                   
REMARK 500  4 PRO A  63       78.89    -37.27                                   
REMARK 500  4 ASN A  64      -52.88    160.63                                   
REMARK 500  4 THR A  70      -32.38   -131.48                                   
REMARK 500  4 LYS A  73      -15.37     72.98                                   
REMARK 500  5 VAL A   2       36.90    -83.68                                   
REMARK 500  5 ILE A   3      -88.18     -0.72                                   
REMARK 500  5 ALA A   6      145.42    133.24                                   
REMARK 500  5 LEU A  11      -38.47    -39.70                                   
REMARK 500  5 TRP A  24      -66.79    -99.83                                   
REMARK 500  5 LYS A  26       -6.75    -56.04                                   
REMARK 500  5 CYS A  31       95.38    -65.17                                   
REMARK 500  5 SER A  37      108.53    -41.40                                   
REMARK 500  5 SER A  45      106.89    -59.12                                   
REMARK 500  5 LYS A  47      179.30    -59.31                                   
REMARK 500  5 MET A  55       33.94    -78.64                                   
REMARK 500  5 HIS A  57       37.50    -79.33                                   
REMARK 500  5 PRO A  63       79.41    -46.64                                   
REMARK 500  5 ASN A  64      -48.50    166.46                                   
REMARK 500  5 LYS A  73      -34.34     72.94                                   
REMARK 500  5 LYS A  74       85.49    -69.95                                   
REMARK 500  6 ILE A   3      -71.21     61.68                                   
REMARK 500  6 LYS A  15       34.18    -74.76                                   
REMARK 500  6 VAL A  21      143.78    -38.01                                   
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS     381 RAMACHANDRAN OUTLIERS.                        
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  2 ARG A  29         0.15    SIDE CHAIN                              
REMARK 500  4 PHE A  50         0.14    SIDE CHAIN                              
REMARK 500  4 ARG A  54         0.08    SIDE CHAIN                              
REMARK 500  7 HIS A  46         0.09    SIDE CHAIN                              
REMARK 500  8 ARG A  54         0.13    SIDE CHAIN                              
REMARK 500 12 ARG A  29         0.10    SIDE CHAIN                              
REMARK 500 12 HIS A  57         0.10    SIDE CHAIN                              
REMARK 500 13 ARG A  54         0.10    SIDE CHAIN                              
REMARK 500 19 HIS A  57         0.08    SIDE CHAIN                              
REMARK 500 20 ARG A  29         0.12    SIDE CHAIN                              
REMARK 500 22 PHE A  75         0.10    SIDE CHAIN                              
REMARK 500 23 HIS A  57         0.10    SIDE CHAIN                              
REMARK 500 26 HIS A  57         0.13    SIDE CHAIN                              
REMARK 500 27 ARG A  29         0.11    SIDE CHAIN                              
REMARK 500 27 HIS A  46         0.09    SIDE CHAIN                              
REMARK 500 29 ARG A  29         0.11    SIDE CHAIN                              
REMARK 500 32 ARG A   9         0.09    SIDE CHAIN                              
REMARK 500 32 PHE A  75         0.10    SIDE CHAIN                              
REMARK 500 33 ARG A   9         0.11    SIDE CHAIN                              
REMARK 500 33 PHE A  75         0.13    SIDE CHAIN                              
REMARK 500 35 ARG A  29         0.11    SIDE CHAIN                              
REMARK 500 36 ARG A  54         0.12    SIDE CHAIN                              
REMARK 500 39 HIS A  57         0.10    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
DBREF  1IMT A    1    80  UNP    P25687   VPRA_DENPO       1     81             
SEQADV 1IMT     A       UNP  P25687    LYS    55 DELETION                       
SEQRES   1 A   80  ALA VAL ILE THR GLY ALA CYS GLU ARG ASP LEU GLN CYS          
SEQRES   2 A   80  GLY LYS GLY THR CYS CYS ALA VAL SER LEU TRP ILE LYS          
SEQRES   3 A   80  SER VAL ARG VAL CYS THR PRO VAL GLY THR SER GLY GLU          
SEQRES   4 A   80  ASP CYS HIS PRO ALA SER HIS LYS ILE PRO PHE SER GLY          
SEQRES   5 A   80  GLN ARG MET HIS HIS THR CYS PRO CYS ALA PRO ASN LEU          
SEQRES   6 A   80  ALA CYS VAL GLN THR SER PRO LYS LYS PHE LYS CYS LEU          
SEQRES   7 A   80  SER LYS                                                      
HELIX    1   1 ASP A   10  GLN A   12  5                                   3    
SHEET    1   A 2 THR A  17  VAL A  21  0                                        
SHEET    2   A 2 ARG A  29  PRO A  33 -1  N  THR A  32   O  CYS A  18           
SHEET    1   B 2 ALA A  66  SER A  71  0                                        
SHEET    2   B 2 LYS A  74  LEU A  78 -1  N  LEU A  78   O  ALA A  66           
SSBOND   1 CYS A    7    CYS A   19                          1555   1555  2.08  
SSBOND   2 CYS A   13    CYS A   31                          1555   1555  2.08  
SSBOND   3 CYS A   18    CYS A   59                          1555   1555  2.08  
SSBOND   4 CYS A   41    CYS A   67                          1555   1555  2.08  
SSBOND   5 CYS A   61    CYS A   77                          1555   1555  2.08  
CISPEP   1 ILE A   48    PRO A   49          1         2.25                     
CISPEP   2 ILE A   48    PRO A   49          2        -4.26                     
CISPEP   3 ILE A   48    PRO A   49          3         1.10                     
CISPEP   4 ILE A   48    PRO A   49          4        -3.69                     
CISPEP   5 ILE A   48    PRO A   49          5        -5.36                     
CISPEP   6 ILE A   48    PRO A   49          6        -6.34                     
CISPEP   7 ILE A   48    PRO A   49          7        -1.35                     
CISPEP   8 ILE A   48    PRO A   49          8        10.46                     
CISPEP   9 ILE A   48    PRO A   49          9         0.30                     
CISPEP  10 ILE A   48    PRO A   49         10       -10.34                     
CISPEP  11 ILE A   48    PRO A   49         11        -9.70                     
CISPEP  12 ILE A   48    PRO A   49         12        -8.19                     
CISPEP  13 ILE A   48    PRO A   49         13        -5.28                     
CISPEP  14 ILE A   48    PRO A   49         14        -3.24                     
CISPEP  15 ILE A   48    PRO A   49         15        -6.36                     
CISPEP  16 ILE A   48    PRO A   49         16        -3.98                     
CISPEP  17 ILE A   48    PRO A   49         17        -4.85                     
CISPEP  18 ILE A   48    PRO A   49         18        -5.21                     
CISPEP  19 ILE A   48    PRO A   49         19       -10.11                     
CISPEP  20 ILE A   48    PRO A   49         20        -9.98                     
CISPEP  21 ILE A   48    PRO A   49         21        -3.12                     
CISPEP  22 ILE A   48    PRO A   49         22        -9.28                     
CISPEP  23 ILE A   48    PRO A   49         23        -7.70                     
CISPEP  24 ILE A   48    PRO A   49         24        -3.68                     
CISPEP  25 ILE A   48    PRO A   49         25        -5.20                     
CISPEP  26 ILE A   48    PRO A   49         26        -7.39                     
CISPEP  27 ILE A   48    PRO A   49         27       -10.40                     
CISPEP  28 ILE A   48    PRO A   49         28       -10.51                     
CISPEP  29 ILE A   48    PRO A   49         29        -9.99                     
CISPEP  30 ILE A   48    PRO A   49         30        -5.87                     
CISPEP  31 ILE A   48    PRO A   49         31        -7.56                     
CISPEP  32 ILE A   48    PRO A   49         32        -7.33                     
CISPEP  33 ILE A   48    PRO A   49         33        -6.54                     
CISPEP  34 ILE A   48    PRO A   49         34        -8.89                     
CISPEP  35 ILE A   48    PRO A   49         35        -1.24                     
CISPEP  36 ILE A   48    PRO A   49         36        -7.70                     
CISPEP  37 ILE A   48    PRO A   49         37        -6.39                     
CISPEP  38 ILE A   48    PRO A   49         38        -3.43                     
CISPEP  39 ILE A   48    PRO A   49         39       -10.41                     
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