HEADER    TOXIN                                   02-FEB-04   1S8K              
TITLE     SOLUTION STRUCTURE OF BMKK4, A NOVEL POTASSIUM CHANNEL BLOCKER FROM   
TITLE    2 SCORPION BUTHUS MARTENSII KARSCH, 25 STRUCTURES                      
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TOXIN BMKK4;                                               
COMPND   3 CHAIN: A;                                                            
COMPND   4 SYNONYM: KK4, TOXIN TXKS4, ALPHA-KTX 17.1                            
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: MESOBUTHUS MARTENSII;                           
SOURCE   3 ORGANISM_COMMON: CHINESE SCORPION;                                   
SOURCE   4 ORGANISM_TAXID: 34649                                                
KEYWDS    ALPHA/BETA SCAFFOLD, TOXIN                                            
EXPDTA    SOLUTION NMR                                                          
NUMMDL    25                                                                    
AUTHOR    N.ZHANG,X.CHEN,M.LI,C.CAO,Y.WANG,G.HU,H.WU                            
REVDAT   4   30-OCT-24 1S8K    1       REMARK                                   
REVDAT   3   02-MAR-22 1S8K    1       REMARK SEQADV SEQRES LINK                
REVDAT   2   24-FEB-09 1S8K    1       VERSN                                    
REVDAT   1   08-FEB-05 1S8K    0                                                
JRNL        AUTH   N.ZHANG,X.CHEN,M.LI,C.CAO,Y.WANG,G.WU,G.HU,H.WU              
JRNL        TITL   SOLUTION STRUCTURE OF BMKK4, THE FIRST MEMBER OF SUBFAMILY   
JRNL        TITL 2 ALPHA-KTX 17 OF SCORPION TOXINS                              
JRNL        REF    BIOCHEMISTRY                  V.  43 12469 2004              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   15449936                                                     
JRNL        DOI    10.1021/BI0490643                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION. NOT APPLICABLE.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : VNMR 6.1B, AMBER 5.0                                 
REMARK   3   AUTHORS     : MIKE CARLISLE,DAN STEELE,MIKE MILLER (VNMR),         
REMARK   3  PEARLMAN,CASE,CALDWELL,ROSS,CHEATHAM,FERGUSON,SEIBEL,SINGH,         
REMARK   3  WEINER,KOLLMAN (AMBER)                                              
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: THE STRUCTURES ARE BASED ON A TOTAL OF    
REMARK   3  315 CONSTRAINTS, 282 ARE NOE-DERIVED DISTANCE CONSTRAINTS,16        
REMARK   3  DIHEDRAL ANGLE CONSTRAINTS, 17 DISTANCE CONSTRAINTS FROM FOUR       
REMARK   3  HYDROGEN BONDS AND THREE DISULFIDE BONDS.                           
REMARK   4                                                                      
REMARK   4 1S8K COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 04-FEB-04.                  
REMARK 100 THE DEPOSITION ID IS D_1000021502.                                   
REMARK 210                                                                      
REMARK 210 EXPERIMENTAL DETAILS                                                 
REMARK 210  EXPERIMENT TYPE                : NMR                                
REMARK 210  TEMPERATURE           (KELVIN) : 303; 303                           
REMARK 210  PH                             : 3.02; 3.66                         
REMARK 210  IONIC STRENGTH                 : NULL; NULL                         
REMARK 210  PRESSURE                       : AMBIENT; AMBIENT                   
REMARK 210  SAMPLE CONTENTS                : 3.0MM; 3.0MM                       
REMARK 210                                                                      
REMARK 210  NMR EXPERIMENTS CONDUCTED      : 2D NOESY, 2D TOCSY, DQF-COSY; 2D   
REMARK 210                                   TOCSY, 2D NOESY                    
REMARK 210  SPECTROMETER FIELD STRENGTH    : 600 MHZ                            
REMARK 210  SPECTROMETER MODEL             : INOVA                              
REMARK 210  SPECTROMETER MANUFACTURER      : VARIAN                             
REMARK 210                                                                      
REMARK 210  STRUCTURE DETERMINATION.                                            
REMARK 210   SOFTWARE USED                 : VNMR 6.1B, XEASY 1994, DYANA 1.5   
REMARK 210   METHOD USED                   : DISTANCE GEOMETRY                  
REMARK 210                                                                      
REMARK 210 CONFORMERS, NUMBER CALCULATED   : 200                                
REMARK 210 CONFORMERS, NUMBER SUBMITTED    : 25                                 
REMARK 210 CONFORMERS, SELECTION CRITERIA  : STRUCTURES WITH THE LOWEST         
REMARK 210                                   ENERGY                             
REMARK 210                                                                      
REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1                   
REMARK 210                                                                      
REMARK 210 REMARK: THIS STRUCTURE WAS DETERMINED USING STANDARD 2D              
REMARK 210  HOMONUCLEAR TECHNIQUES.                                             
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 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  2 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.0 DEGREES          
REMARK 500  2 CYS A  25   CA  -  CB  -  SG  ANGL. DEV. =   6.9 DEGREES          
REMARK 500  3 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.0 DEGREES          
REMARK 500  3 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   7.6 DEGREES          
REMARK 500  4 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   7.6 DEGREES          
REMARK 500  5 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   7.7 DEGREES          
REMARK 500  6 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.6 DEGREES          
REMARK 500  7 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.6 DEGREES          
REMARK 500  7 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.8 DEGREES          
REMARK 500  7 CYS A  25   CA  -  CB  -  SG  ANGL. DEV. =   6.7 DEGREES          
REMARK 500  8 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.2 DEGREES          
REMARK 500  9 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.5 DEGREES          
REMARK 500  9 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.4 DEGREES          
REMARK 500  9 CYS A  25   CA  -  CB  -  SG  ANGL. DEV. =   6.8 DEGREES          
REMARK 500 10 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.1 DEGREES          
REMARK 500 10 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.0 DEGREES          
REMARK 500 11 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.0 DEGREES          
REMARK 500 11 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   7.4 DEGREES          
REMARK 500 12 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.1 DEGREES          
REMARK 500 13 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.0 DEGREES          
REMARK 500 14 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.5 DEGREES          
REMARK 500 14 CYS A  25   CA  -  CB  -  SG  ANGL. DEV. =   7.1 DEGREES          
REMARK 500 16 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.3 DEGREES          
REMARK 500 16 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.0 DEGREES          
REMARK 500 18 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   7.8 DEGREES          
REMARK 500 19 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.4 DEGREES          
REMARK 500 20 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.4 DEGREES          
REMARK 500 20 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   7.7 DEGREES          
REMARK 500 23 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   8.3 DEGREES          
REMARK 500 24 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.5 DEGREES          
REMARK 500 24 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   7.5 DEGREES          
REMARK 500 25 ARG A  19   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.3 DEGREES          
REMARK 500 25 CYS A  25   CB  -  CA  -  C   ANGL. DEV. =   7.5 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 ARG A   8      -54.03    -29.14                                   
REMARK 500  1 ASP A  18      -61.77    -92.41                                   
REMARK 500  1 THR A  29       88.21   -153.26                                   
REMARK 500  2 THR A   2     -117.43   -145.07                                   
REMARK 500  2 ASP A  18      -61.36    -96.58                                   
REMARK 500  2 THR A  29       54.08   -152.23                                   
REMARK 500  3 ASP A  18      -61.96   -104.84                                   
REMARK 500  4 THR A   2      139.60     81.77                                   
REMARK 500  4 ASP A  18      -62.28    -93.84                                   
REMARK 500  4 THR A  29       30.75   -154.61                                   
REMARK 500  5 THR A   2     -116.32   -113.16                                   
REMARK 500  5 LYS A  28       40.12    -81.71                                   
REMARK 500  6 THR A  29       58.62   -153.27                                   
REMARK 500  7 THR A   2     -118.70   -113.28                                   
REMARK 500  7 ARG A   8      -51.31    -27.18                                   
REMARK 500  8 THR A  29       45.83    -83.36                                   
REMARK 500  9 THR A   2     -113.63   -103.21                                   
REMARK 500  9 LYS A  28       48.19    -80.42                                   
REMARK 500 10 THR A   2     -133.05   -110.49                                   
REMARK 500 10 THR A  29       56.10   -150.04                                   
REMARK 500 11 THR A   2      143.30     81.62                                   
REMARK 500 12 THR A   2     -117.93   -148.44                                   
REMARK 500 13 THR A   2     -114.28   -101.12                                   
REMARK 500 14 THR A   2     -109.54   -143.92                                   
REMARK 500 14 LYS A  28       36.59    -79.67                                   
REMARK 500 14 THR A  29       47.67    -83.80                                   
REMARK 500 15 ASP A  18      -62.90    -96.67                                   
REMARK 500 15 THR A  29     -138.96   -148.18                                   
REMARK 500 16 THR A   2     -116.63   -138.14                                   
REMARK 500 16 THR A  29       74.29   -151.14                                   
REMARK 500 17 THR A   2     -109.52    -89.46                                   
REMARK 500 18 THR A   2     -113.78    -94.45                                   
REMARK 500 18 THR A  29     -137.71   -144.55                                   
REMARK 500 19 THR A   2     -115.71   -141.29                                   
REMARK 500 19 ASP A  18      -60.85    -96.12                                   
REMARK 500 20 THR A   2     -110.95    -99.11                                   
REMARK 500 20 THR A  29     -135.51   -126.82                                   
REMARK 500 21 THR A  16       81.25   -150.16                                   
REMARK 500 22 THR A   2     -120.42    -97.99                                   
REMARK 500 22 THR A  29       48.70    -75.86                                   
REMARK 500 23 THR A   2     -111.70   -144.31                                   
REMARK 500 23 THR A  29      -86.04   -124.45                                   
REMARK 500 24 THR A   2     -113.25    -99.28                                   
REMARK 500 24 THR A  29     -154.09   -160.17                                   
REMARK 500 25 THR A   2     -117.05   -144.08                                   
REMARK 500 25 ASP A  18      -60.69    -92.05                                   
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 ARG A   19     CYS A   20          1       149.77                    
REMARK 500 ARG A   19     CYS A   20          3       146.01                    
REMARK 500 ARG A   19     CYS A   20          5       146.36                    
REMARK 500 ARG A   19     CYS A   20          6       143.45                    
REMARK 500 ARG A   19     CYS A   20          7       147.12                    
REMARK 500 ARG A   19     CYS A   20          8       141.59                    
REMARK 500 ARG A   19     CYS A   20          9       147.33                    
REMARK 500 ARG A   19     CYS A   20         10       143.77                    
REMARK 500 ARG A   19     CYS A   20         11       146.36                    
REMARK 500 ARG A   19     CYS A   20         12       147.80                    
REMARK 500 ARG A   19     CYS A   20         15       145.31                    
REMARK 500 ARG A   19     CYS A   20         16       147.45                    
REMARK 500 ARG A   19     CYS A   20         17       147.52                    
REMARK 500 ARG A   19     CYS A   20         18       146.59                    
REMARK 500 ARG A   19     CYS A   20         20       145.77                    
REMARK 500 ARG A   19     CYS A   20         22       146.71                    
REMARK 500 ARG A   19     CYS A   20         23       148.73                    
REMARK 500 ARG A   19     CYS A   20         24       145.16                    
REMARK 500 ARG A   19     CYS A   20         25       146.63                    
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 TYR A  26         0.18    SIDE CHAIN                              
REMARK 500  2 TYR A  26         0.15    SIDE CHAIN                              
REMARK 500  3 ARG A  19         0.08    SIDE CHAIN                              
REMARK 500  4 TYR A  26         0.14    SIDE CHAIN                              
REMARK 500  5 ARG A  19         0.14    SIDE CHAIN                              
REMARK 500  5 TYR A  26         0.07    SIDE CHAIN                              
REMARK 500  6 ARG A  19         0.15    SIDE CHAIN                              
REMARK 500  6 TYR A  26         0.25    SIDE CHAIN                              
REMARK 500  7 ARG A  19         0.16    SIDE CHAIN                              
REMARK 500  7 TYR A  26         0.25    SIDE CHAIN                              
REMARK 500  8 ARG A  19         0.11    SIDE CHAIN                              
REMARK 500  9 TYR A  13         0.11    SIDE CHAIN                              
REMARK 500  9 ARG A  19         0.16    SIDE CHAIN                              
REMARK 500  9 TYR A  26         0.24    SIDE CHAIN                              
REMARK 500 10 ARG A  19         0.11    SIDE CHAIN                              
REMARK 500 11 ARG A  19         0.12    SIDE CHAIN                              
REMARK 500 12 TYR A  13         0.12    SIDE CHAIN                              
REMARK 500 12 ARG A  19         0.14    SIDE CHAIN                              
REMARK 500 12 TYR A  26         0.07    SIDE CHAIN                              
REMARK 500 13 TYR A  26         0.20    SIDE CHAIN                              
REMARK 500 14 ARG A  19         0.17    SIDE CHAIN                              
REMARK 500 15 TYR A  13         0.12    SIDE CHAIN                              
REMARK 500 15 TYR A  26         0.21    SIDE CHAIN                              
REMARK 500 16 ARG A  19         0.17    SIDE CHAIN                              
REMARK 500 16 TYR A  26         0.27    SIDE CHAIN                              
REMARK 500 17 ARG A  19         0.17    SIDE CHAIN                              
REMARK 500 18 TYR A  13         0.12    SIDE CHAIN                              
REMARK 500 18 ARG A  19         0.14    SIDE CHAIN                              
REMARK 500 19 TYR A  13         0.12    SIDE CHAIN                              
REMARK 500 19 ARG A  19         0.10    SIDE CHAIN                              
REMARK 500 19 TYR A  26         0.24    SIDE CHAIN                              
REMARK 500 20 TYR A  13         0.13    SIDE CHAIN                              
REMARK 500 20 ARG A  19         0.18    SIDE CHAIN                              
REMARK 500 20 TYR A  26         0.26    SIDE CHAIN                              
REMARK 500 21 ARG A  19         0.09    SIDE CHAIN                              
REMARK 500 21 TYR A  26         0.26    SIDE CHAIN                              
REMARK 500 22 ARG A  19         0.12    SIDE CHAIN                              
REMARK 500 23 TYR A  13         0.12    SIDE CHAIN                              
REMARK 500 23 ARG A  19         0.13    SIDE CHAIN                              
REMARK 500 24 ARG A  19         0.15    SIDE CHAIN                              
REMARK 500 24 TYR A  26         0.23    SIDE CHAIN                              
REMARK 500 25 ARG A  19         0.16    SIDE CHAIN                              
REMARK 500 25 TYR A  26         0.11    SIDE CHAIN                              
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 NH2 A 31                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1DU9   RELATED DB: PDB                                   
REMARK 900 SOLUTION STRUCTURES OF BMP02, A NATURAL SCORPION TOXIN WHICH BLOCKS  
REMARK 900 APAMIN-SENSITIVE CALCIUM-ACTIVATED POTASSIUM CHANNEL                 
REMARK 900 RELATED ID: 1PNH   RELATED DB: PDB                                   
REMARK 900 SOLUTION STRUCTURES OF P05-NH2, A SCORPION TOXIN ANALOG WITH HIGH    
REMARK 900 AFFINITY FOR THE APAMIN-SENSITIVE POTASSIUM CHANNEL                  
REMARK 900 RELATED ID: 1ACW   RELATED DB: PDB                                   
REMARK 900 SOLUTION STRUCTURES OF P01, A NATURAL SCORPION PEPTIDE STRUCTURALLY  
REMARK 900 ANALOGUS TO SCORPION TOXINS SPECIFIC FOR APAMIN-SENSITIVE POTASSIUM  
REMARK 900 CHANNEL                                                              
REMARK 900 RELATED ID: 1SCY   RELATED DB: PDB                                   
REMARK 900 SOLUTION STRUCTURES OF SCYLLATOXIN, A SCORPION TOXIN WITH HIGH       
REMARK 900 AFFINITY FOR APAMIN-SENSITIVE CALCIUM-ACTIVATED POTASSIUM CHANNELS   
DBREF  1S8K A    1    30  UNP    Q95NJ8   SKK4_MESMA      24     53             
SEQRES   1 A   31  PCA THR GLN CYS GLN SER VAL ARG ASP CYS GLN GLN TYR          
SEQRES   2 A   31  CYS LEU THR PRO ASP ARG CYS SER TYR GLY THR CYS TYR          
SEQRES   3 A   31  CYS LYS THR THR NH2                                          
MODRES 1S8K PCA A    1  GLN  PYROGLUTAMIC ACID                                  
HET    PCA  A   1      13                                                       
HET    NH2  A  31       3                                                       
HETNAM     PCA PYROGLUTAMIC ACID                                                
HETNAM     NH2 AMINO GROUP                                                      
FORMUL   1  PCA    C5 H7 N O3                                                   
FORMUL   1  NH2    H2 N                                                         
HELIX    1   1 SER A    6  CYS A   14  1                                   9    
SHEET    1   A 2 PRO A  17  SER A  21  0                                        
SHEET    2   A 2 THR A  24  CYS A  27 -1  O  TYR A  26   N  ASP A  18           
SSBOND   1 CYS A    4    CYS A   20                          1555   1555  2.08  
SSBOND   2 CYS A   10    CYS A   25                          1555   1555  2.07  
SSBOND   3 CYS A   14    CYS A   27                          1555   1555  2.08  
LINK         C   PCA A   1                 N   THR A   2     1555   1555  1.33  
LINK         C   THR A  30                 N   NH2 A  31     1555   1555  1.33  
SITE     1 AC1  1 THR A  30                                                     
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                                                                  
HETATM    1  N   PCA A   1      -4.422   9.651   9.882  1.00  0.00           N  
HETATM    2  CA  PCA A   1      -4.053   8.256  10.022  1.00  0.00           C  
HETATM    3  CB  PCA A   1      -5.281   7.584  10.653  1.00  0.00           C  
HETATM    4  CG  PCA A   1      -6.422   8.483  10.174  1.00  0.00           C  
HETATM    5  CD  PCA A   1      -5.744   9.812   9.884  1.00  0.00           C  
HETATM    6  OE  PCA A   1      -6.367  10.856   9.798  1.00  0.00           O  
HETATM    7  C   PCA A   1      -3.735   7.700   8.636  1.00  0.00           C  
HETATM    8  O   PCA A   1      -4.616   7.182   7.955  1.00  0.00           O  
HETATM    9  HA  PCA A   1      -3.188   8.144  10.680  1.00  0.00           H  
HETATM   10  HB2 PCA A   1      -5.205   7.658  11.739  1.00  0.00           H  
HETATM   11  HB3 PCA A   1      -5.409   6.542  10.358  1.00  0.00           H  
HETATM   12  HG2 PCA A   1      -6.855   8.093   9.252  1.00  0.00           H  
HETATM   13  HG3 PCA A   1      -7.192   8.585  10.940  1.00  0.00           H