HEADER TOXIN 19-NOV-03 1RJI TITLE SOLUTION STRUCTURE OF BMKX, A NOVEL POTASSIUM CHANNEL BLOCKER FROM THE TITLE 2 CHINESE SCORPION BUTHUS MARTENSI KARSCH COMPND MOL_ID: 1; COMPND 2 MOLECULE: POTASSIUM CHANNEL TOXIN KX; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: BMKX; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS SEQUENCE OCCURS NATURALLY IN THE CHINESE SOURCE 4 SCORPION BUTHUS MARTENSI KARSCH KEYWDS 3-10 HELIX, BETA SHEET, TOXIN EXPDTA SOLUTION NMR NUMMDL 21 MDLTYP MINIMIZED AVERAGE AUTHOR Z.CAI,J.WU,Y.XU,C.-G.WANG,C.-W.CHI,Y.SHI REVDAT 5 23-OCT-24 1RJI 1 REMARK REVDAT 4 02-MAR-22 1RJI 1 REMARK REVDAT 3 24-FEB-09 1RJI 1 VERSN REVDAT 2 15-MAR-05 1RJI 1 AUTHOR JRNL REVDAT 1 09-DEC-03 1RJI 0 JRNL AUTH C.-G.WANG,Z.CAI,W.LU,J.WU,Y.XU,Y.SHI,C.-W.CHI JRNL TITL A NOVEL SHORT-CHAIN PEPTIDE BMKX FROM THE CHINESE SCORPION JRNL TITL 2 BUTHUS MARTENSI KARSCH, SEQUENCING, GENE CLONING AND JRNL TITL 3 STRUCTURE DETERMINATION JRNL REF TOXICON V. 45 309 2005 JRNL REFN ISSN 0041-0101 JRNL PMID 15683869 JRNL DOI 10.1016/J.TOXICON.2004.11.014 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : XEASY 3.2, CNS 1.0 REMARK 3 AUTHORS : K. WUTHRICH (XEASY), BRUNGER, A.T. (CNS) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE STRUCTURES ARE BASED ON A TOTAL OF REMARK 3 283 RESTRAINTS, 245 ARE NOE-DERIVED DISTANCE CONSTRAINTS, 19 REMARK 3 DIHEDRAL ANGLE RESTRAINTS,19 DISTANCE RESTRAINTS FROM HYDROGEN REMARK 3 BONDS. REMARK 4 REMARK 4 1RJI COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 21-NOV-03. REMARK 100 THE DEPOSITION ID IS D_1000020804. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 300; 300 REMARK 210 PH : 5.0; 5.0 REMARK 210 IONIC STRENGTH : 50MM PHOSPHATE; 50MM PHOSPHATE REMARK 210 PRESSURE : 1 ATM; 1 ATM REMARK 210 SAMPLE CONTENTS : PHOSPHATE BUFFER PH 5.0; 3MM REMARK 210 BMKX; PHOSPHATE BUFFER PH 5.0; REMARK 210 3MM BMKX REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : DQF-COSY; 2D TOCSY; 2D NOESY; E REMARK 210 -COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ REMARK 210 SPECTROMETER MODEL : DMX REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : DIANA 2.8, CNS 1.0 REMARK 210 METHOD USED : SIMULATED ANNEALING AND ENERGY REMARK 210 MINIMIZATION REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 100 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 21 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: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 O LYS A 23 H GLY A 25 1.59 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 PRO A 2 40.64 -84.46 REMARK 500 1 TYR A 3 -60.62 -90.41 REMARK 500 1 LYS A 23 -158.35 -94.62 REMARK 500 1 ASN A 24 65.72 -56.42 REMARK 500 1 CYS A 30 -128.79 -78.98 REMARK 500 2 PRO A 2 43.73 -81.39 REMARK 500 2 LYS A 23 -155.73 -95.11 REMARK 500 2 ASN A 24 64.08 -53.64 REMARK 500 2 CYS A 30 -128.20 -80.71 REMARK 500 3 PRO A 2 42.27 -82.62 REMARK 500 3 LYS A 23 -156.92 -94.90 REMARK 500 3 ASN A 24 66.02 -57.01 REMARK 500 3 CYS A 30 -126.45 -79.63 REMARK 500 4 PRO A 2 41.62 -81.40 REMARK 500 4 LYS A 23 -157.50 -95.38 REMARK 500 4 ASN A 24 64.87 -55.08 REMARK 500 4 CYS A 30 90.31 -40.24 REMARK 500 5 PRO A 2 43.33 -82.83 REMARK 500 5 LYS A 23 -154.71 -99.46 REMARK 500 5 ASN A 24 63.83 -50.14 REMARK 500 5 CYS A 30 -127.66 -80.93 REMARK 500 6 PRO A 2 42.48 -83.10 REMARK 500 6 LYS A 23 -155.73 -95.05 REMARK 500 6 ASN A 24 65.21 -54.97 REMARK 500 6 CYS A 30 -127.96 -81.15 REMARK 500 7 PRO A 2 41.12 -82.65 REMARK 500 7 ARG A 11 0.57 -69.30 REMARK 500 7 LYS A 23 -157.41 -95.18 REMARK 500 7 ASN A 24 65.62 -56.69 REMARK 500 7 CYS A 30 -127.82 -81.46 REMARK 500 8 PRO A 2 40.52 -83.14 REMARK 500 8 LYS A 23 -155.42 -95.10 REMARK 500 8 ASN A 24 65.02 -54.28 REMARK 500 8 CYS A 30 -128.43 -80.77 REMARK 500 9 PRO A 2 40.47 -82.60 REMARK 500 9 LYS A 23 -154.49 -99.15 REMARK 500 9 ASN A 24 64.27 -50.82 REMARK 500 9 CYS A 30 -128.78 -81.75 REMARK 500 10 PRO A 2 43.71 -82.19 REMARK 500 10 ARG A 11 1.96 -69.10 REMARK 500 10 LYS A 23 -156.05 -94.94 REMARK 500 10 ASN A 24 65.23 -55.41 REMARK 500 10 CYS A 30 -127.53 -80.28 REMARK 500 11 PRO A 2 36.57 -82.20 REMARK 500 11 LYS A 23 -156.07 -94.81 REMARK 500 11 ASN A 24 64.71 -55.56 REMARK 500 11 CYS A 30 -127.39 -82.51 REMARK 500 12 PRO A 2 42.74 -83.14 REMARK 500 12 LYS A 23 -155.48 -94.93 REMARK 500 12 ASN A 24 65.13 -55.30 REMARK 500 REMARK 500 THIS ENTRY HAS 87 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL DBREF 1RJI A 1 31 UNP Q7Z0H4 SCKI_MESMA 24 54 SEQRES 1 A 31 THR PRO TYR PRO VAL ASN CYS LYS THR ASP ARG ASP CYS SEQRES 2 A 31 VAL MET CYS GLY LEU GLY ILE SER CYS LYS ASN GLY TYR SEQRES 3 A 31 CYS GLN GLY CYS THR HELIX 1 1 THR A 9 VAL A 14 5 6 SSBOND 1 CYS A 7 CYS A 22 1555 1555 2.03 SSBOND 2 CYS A 13 CYS A 27 1555 1555 2.03 SSBOND 3 CYS A 16 CYS A 30 1555 1555 2.03 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