HEADER NEUROTOXIN 03-JUL-98 1BKT TITLE BMKTX TOXIN FROM SCORPION BUTHUS MARTENSII KARSCH, NMR, 25 TITLE 2 STRUCTURES COMPND MOL_ID: 1; COMPND 2 MOLECULE: BMKTX; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: MESOBUTHUS MARTENSII; SOURCE 3 ORGANISM_COMMON: CHINESE SCORPION; SOURCE 4 ORGANISM_TAXID: 34649; SOURCE 5 STRAIN: KARSCH KEYWDS SCORPION, NEUROTOXIN, NMR, STRUCTURE, LARGE CONDUCTANCE KEYWDS 2 POTASSIUM CHANNEL, VOLTAGE GATED POTASSIUM CHANNEL, BUTHUS KEYWDS 3 MARTENSII EXPDTA SOLUTION NMR NUMMDL 25 AUTHOR J.G.RENISIO,R.ROMI-LEBRUN,E.BLANC,O.BORNET,T.NAKAJIMA, AUTHOR 2 H.DARBON REVDAT 3 24-FEB-09 1BKT 1 VERSN REVDAT 2 01-APR-03 1BKT 1 JRNL REVDAT 1 13-JAN-99 1BKT 0 JRNL AUTH J.G.RENISIO,R.ROMI-LEBRUN,E.BLANC,O.BORNET, JRNL AUTH 2 T.NAKAJIMA,H.DARBON JRNL TITL SOLUTION STRUCTURE OF BMKTX, A K+ BLOCKER TOXIN JRNL TITL 2 FROM THE CHINESE SCORPION BUTHUS MARTENSI JRNL REF PROTEINS V. 38 70 2000 JRNL REFN ISSN 0887-3585 JRNL PMID 10651040 JRNL DOI 10.1002/(SICI)1097-0134(20000101)38:1<70::AID-PROT8 JRNL DOI 2 >3.0.CO;2-5 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.84 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: 15,000 ITERATIONS OF THE POWELL REMARK 3 ALGORITHM WITH CHARMM FORCE FIELD REMARK 4 REMARK 4 1BKT COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 300 REMARK 210 PH : 3 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : NULL REMARK 210 SAMPLE CONTENTS : WATER REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : NOESY, TOCSY, COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ REMARK 210 SPECTROMETER MODEL : DRX500 REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : DIANA, DYANA REMARK 210 METHOD USED : DISTANCE GEOMETRY REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 25 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 25 REMARK 210 CONFORMERS, SELECTION CRITERIA : LEAST RESTRAINT VIOLATION REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: MODEL 1 WAS DETERMINED BY 2D PROTON NMR 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 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 20 CYS A 32 CA - CB - SG ANGL. DEV. = 6.6 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 ILE A 3 -103.83 -115.06 REMARK 500 1 ASN A 4 38.63 -173.26 REMARK 500 1 MET A 22 -165.74 -127.24 REMARK 500 1 ILE A 28 -80.78 -112.17 REMARK 500 2 ILE A 3 -106.24 -121.61 REMARK 500 2 ASN A 4 37.15 -176.01 REMARK 500 2 MET A 22 -163.48 -126.41 REMARK 500 2 ILE A 28 -80.09 -112.54 REMARK 500 2 THR A 35 64.42 -118.72 REMARK 500 2 PRO A 36 176.79 -59.18 REMARK 500 3 ILE A 3 -107.62 -116.35 REMARK 500 3 ASN A 4 40.51 -176.45 REMARK 500 3 MET A 22 -165.83 -127.51 REMARK 500 3 ILE A 28 -78.82 -112.82 REMARK 500 4 ILE A 3 -104.57 -113.99 REMARK 500 4 ASN A 4 34.52 -174.48 REMARK 500 4 MET A 22 -162.36 -127.13 REMARK 500 4 ILE A 28 -79.27 -115.21 REMARK 500 5 ILE A 3 -107.95 -121.58 REMARK 500 5 ASN A 4 38.29 -175.63 REMARK 500 5 SER A 10 34.61 -89.44 REMARK 500 5 MET A 22 -163.02 -128.44 REMARK 500 5 ILE A 28 -73.86 -112.24 REMARK 500 6 ILE A 3 -107.00 -121.32 REMARK 500 6 ASN A 4 38.47 -175.71 REMARK 500 6 MET A 22 -164.34 -125.98 REMARK 500 6 ILE A 28 -74.15 -112.08 REMARK 500 7 ILE A 3 -107.61 -122.48 REMARK 500 7 ASN A 4 37.50 -176.65 REMARK 500 7 MET A 22 -164.01 -128.27 REMARK 500 7 ILE A 28 -82.54 -114.55 REMARK 500 8 ILE A 3 -105.56 -114.27 REMARK 500 8 ASN A 4 34.92 -175.22 REMARK 500 8 MET A 22 -164.81 -127.32 REMARK 500 8 ILE A 28 -81.18 -113.26 REMARK 500 9 ILE A 3 -106.79 -124.26 REMARK 500 9 ASN A 4 36.49 -176.69 REMARK 500 9 MET A 22 -166.01 -127.62 REMARK 500 9 ILE A 28 -79.19 -115.27 REMARK 500 10 ILE A 3 -105.07 -111.69 REMARK 500 10 ASN A 4 35.75 -173.18 REMARK 500 10 MET A 22 -163.51 -128.49 REMARK 500 10 ILE A 28 -77.45 -114.33 REMARK 500 11 ILE A 3 -106.02 -114.71 REMARK 500 11 ASN A 4 36.63 -174.38 REMARK 500 11 MET A 22 -164.71 -124.44 REMARK 500 11 ILE A 28 -78.12 -112.28 REMARK 500 12 ILE A 3 -104.67 -113.62 REMARK 500 12 ASN A 4 35.60 -175.30 REMARK 500 12 MET A 22 -163.74 -124.49 REMARK 500 12 ILE A 28 -78.49 -115.12 REMARK 500 13 ILE A 3 -105.23 -121.24 REMARK 500 13 ASN A 4 36.60 -175.70 REMARK 500 13 MET A 22 -165.74 -123.82 REMARK 500 13 ILE A 28 -78.80 -112.59 REMARK 500 14 ILE A 3 -105.35 -113.81 REMARK 500 14 ASN A 4 36.49 -174.67 REMARK 500 14 MET A 22 -165.24 -126.73 REMARK 500 14 ILE A 28 -79.18 -116.12 REMARK 500 15 ILE A 3 -104.68 -113.81 REMARK 500 15 ASN A 4 34.80 -174.67 REMARK 500 15 MET A 22 -165.44 -124.25 REMARK 500 15 ILE A 28 -83.18 -109.72 REMARK 500 16 ILE A 3 -104.46 -110.30 REMARK 500 16 ASN A 4 35.29 -173.91 REMARK 500 16 SER A 10 35.22 -91.26 REMARK 500 16 MET A 22 -165.50 -127.15 REMARK 500 16 ILE A 28 -78.82 -115.11 REMARK 500 17 ILE A 3 -106.76 -122.54 REMARK 500 17 ASN A 4 34.60 -177.24 REMARK 500 17 MET A 22 -166.57 -124.85 REMARK 500 17 ILE A 28 -81.08 -114.96 REMARK 500 18 ILE A 3 -107.67 -122.50 REMARK 500 18 ASN A 4 35.82 -175.63 REMARK 500 18 SER A 10 34.14 -94.67 REMARK 500 18 MET A 22 -167.32 -128.57 REMARK 500 18 ILE A 28 -77.65 -115.22 REMARK 500 18 PRO A 36 174.80 -57.50 REMARK 500 19 ILE A 3 -103.80 -114.25 REMARK 500 19 ASN A 4 31.39 -173.81 REMARK 500 19 MET A 22 -164.04 -128.22 REMARK 500 19 ILE A 28 -81.93 -114.68 REMARK 500 20 ILE A 3 -105.43 -111.62 REMARK 500 20 ASN A 4 36.81 -173.80 REMARK 500 20 MET A 22 -164.27 -125.15 REMARK 500 20 ILE A 28 -78.86 -116.91 REMARK 500 21 ILE A 3 -104.95 -111.82 REMARK 500 21 ASN A 4 33.76 -176.01 REMARK 500 21 MET A 22 -164.85 -125.64 REMARK 500 21 ILE A 28 -78.74 -118.08 REMARK 500 22 ILE A 3 -104.15 -112.06 REMARK 500 22 ASN A 4 33.40 -173.01 REMARK 500 22 SER A 10 35.54 -88.59 REMARK 500 22 MET A 22 -165.71 -125.15 REMARK 500 22 ILE A 28 -82.95 -114.60 REMARK 500 22 THR A 35 66.28 -116.76 REMARK 500 23 ILE A 3 -104.65 -110.47 REMARK 500 23 ASN A 4 33.79 -173.95 REMARK 500 23 SER A 10 34.16 -89.50 REMARK 500 23 MET A 22 -165.95 -124.82 REMARK 500 23 ILE A 28 -78.45 -117.13 REMARK 500 24 ILE A 3 -105.33 -114.55 REMARK 500 24 ASN A 4 33.58 -175.15 REMARK 500 24 MET A 22 -165.62 -124.18 REMARK 500 24 ILE A 28 -85.59 -109.63 REMARK 500 25 ILE A 3 -106.63 -120.92 REMARK 500 25 ASN A 4 35.43 -175.76 REMARK 500 25 SER A 10 34.52 -85.46 REMARK 500 25 MET A 22 -164.56 -126.14 REMARK 500 25 ILE A 28 -79.27 -116.45 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 ARG A 23 0.12 SIDE_CHAIN REMARK 500 2 ARG A 23 0.29 SIDE_CHAIN REMARK 500 3 ARG A 23 0.09 SIDE_CHAIN REMARK 500 4 ARG A 23 0.10 SIDE_CHAIN REMARK 500 5 ARG A 23 0.29 SIDE_CHAIN REMARK 500 6 ARG A 23 0.13 SIDE_CHAIN REMARK 500 8 ARG A 23 0.12 SIDE_CHAIN REMARK 500 9 ARG A 23 0.12 SIDE_CHAIN REMARK 500 10 ARG A 23 0.14 SIDE_CHAIN REMARK 500 11 ARG A 23 0.14 SIDE_CHAIN REMARK 500 12 ARG A 23 0.10 SIDE_CHAIN REMARK 500 13 ARG A 23 0.14 SIDE_CHAIN REMARK 500 15 ARG A 23 0.14 SIDE_CHAIN REMARK 500 16 ARG A 23 0.09 SIDE_CHAIN REMARK 500 17 ARG A 23 0.10 SIDE_CHAIN REMARK 500 18 ARG A 23 0.15 SIDE_CHAIN REMARK 500 19 ARG A 23 0.11 SIDE_CHAIN REMARK 500 20 ARG A 23 0.09 SIDE_CHAIN REMARK 500 21 ARG A 23 0.12 SIDE_CHAIN REMARK 500 22 ARG A 23 0.17 SIDE_CHAIN REMARK 500 23 ARG A 23 0.12 SIDE_CHAIN REMARK 500 24 ARG A 23 0.14 SIDE_CHAIN REMARK 500 25 ARG A 23 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 38 DBREF 1BKT A 1 37 UNP Q9NII7 SCKT_MESMA 23 59 SEQRES 1 A 38 VAL GLY ILE ASN VAL LYS CYS LYS HIS SER GLY GLN CYS SEQRES 2 A 38 LEU LYS PRO CYS LYS ASP ALA GLY MET ARG PHE GLY LYS SEQRES 3 A 38 CYS ILE ASN GLY LYS CYS ASP CYS THR PRO LYS NH2 HET NH2 A 38 3 HETNAM NH2 AMINO GROUP FORMUL 1 NH2 H2 N HELIX 1 1 LEU A 14 ALA A 20 1 7 SHEET 1 A 2 GLY A 25 CYS A 27 0 SHEET 2 A 2 CYS A 32 CYS A 34 -1 N ASP A 33 O LYS A 26 SSBOND 1 CYS A 7 CYS A 27 1555 1555 2.02 SSBOND 2 CYS A 13 CYS A 32 1555 1555 2.02 SSBOND 3 CYS A 17 CYS A 34 1555 1555 2.02 LINK N NH2 A 38 C LYS A 37 1555 1555 1.31 SITE 1 AC1 2 PRO A 36 LYS A 37 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 ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL MASTER 234 0 1 1 2 0 1 6 0 0 0 3 END