HEADER TOXIN 03-JUL-03 1PX9 TITLE SOLUTION STRUCTURE OF THE NATIVE CNERG1 ERGTOXIN, A HIGHLY SPECIFIC TITLE 2 INHIBITOR OF HERG CHANNEL COMPND MOL_ID: 1; COMPND 2 MOLECULE: ERGTOXIN; COMPND 3 CHAIN: A SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CENTRUROIDES NOXIUS; SOURCE 3 ORGANISM_COMMON: MEXICAN SCORPION; SOURCE 4 ORGANISM_TAXID: 6878; SOURCE 5 SECRETION: VENOM KEYWDS ALPHA/BETA MOLECULAR SCAFFOLD, TOXIN EXPDTA SOLUTION NMR AUTHOR K.FRENAL,K.WECKER,G.B.GURROLA,L.D.POSSANI,N.WOLFF,M.DELEPIERRE REVDAT 3 02-MAR-22 1PX9 1 REMARK REVDAT 2 24-FEB-09 1PX9 1 VERSN REVDAT 1 22-JUN-04 1PX9 0 JRNL AUTH K.FRENAL,C.Q.XU,N.WOLFF,K.WECKER,G.B.GURROLA,S.Y.ZHU, JRNL AUTH 2 C.W.CHI,L.D.POSSANI,J.TYTGAT,M.DELEPIERRE JRNL TITL EXPLORING STRUCTURAL FEATURES OF THE INTERACTION BETWEEN THE JRNL TITL 2 SCORPION TOXINCNERG1 AND ERG K+ CHANNELS. JRNL REF PROTEINS V. 56 367 2004 JRNL REFN ISSN 0887-3585 JRNL PMID 15211519 JRNL DOI 10.1002/PROT.20102 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : DISCOVER INSIGHTII 2000, DISCOVER INSIGHTII 2000 REMARK 3 AUTHORS : ACCELRYS TECHNOLOGIES (DISCOVER), ACCELRYS REMARK 3 TECHNOLOGIES (DISCOVER) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE STRUCTURES ARE BASED ON A TOTAL OF REMARK 3 452 DISTANCE CONSTRAINTS (252 ARE INTRARESIDUAL NOE-DERIVATED REMARK 3 DISTANCE CONSTRAINTS, 200 ARE INTERRESIDUAL NOE-DERIVATED REMARK 3 DISTANCE CONSTRAINTS INCLUDING 49 LONG RANGE), 13 3J AND 10 REMARK 3 HBONDS REMARK 4 REMARK 4 1PX9 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-JUL-03. REMARK 100 THE DEPOSITION ID IS D_1000019663. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 303 REMARK 210 PH : 3 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 0.55 MG OF LYOPHILIZED NATURAL REMARK 210 ERGTX REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY; 2D TOCSY; DQF-COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ; 600 MHZ REMARK 210 SPECTROMETER MODEL : INOVA REMARK 210 SPECTROMETER MANUFACTURER : VARIAN REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : DISCOVER INSIGHTII 2000 REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 10 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 1 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH ACCEPTABLE REMARK 210 COVALENT GEOMETRY, STRUCTURES REMARK 210 WITH FAVORABLE NON-BOND ENERGY, REMARK 210 STRUCTURES WITH THE LEAST REMARK 210 RESTRAINT VIOLATIONS, STRUCTURES REMARK 210 WITH THE LOWEST ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 1 REMARK 210 REMARK 210 REMARK: SHIGEMI TUBE AND NANO-PROBE 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 ALA A 42 C ALA A 42 OXT 0.136 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 CYS A 34 CA - CB - SG ANGL. DEV. = 12.5 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 VAL A 6 -68.90 -131.15 REMARK 500 LYS A 8 48.64 -84.33 REMARK 500 TYR A 17 112.53 -166.13 REMARK 500 ASN A 30 -64.55 166.44 REMARK 500 MET A 35 141.22 163.57 REMARK 500 PHE A 37 36.04 -166.03 REMARK 500 REMARK 500 REMARK: NULL DBREF 1PX9 A 1 42 UNP Q86QT3 SEK1_CENNO 1 42 SEQRES 1 A 42 ASP ARG ASP SER CYS VAL ASP LYS SER ARG CYS ALA LYS SEQRES 2 A 42 TYR GLY TYR TYR GLN GLU CYS GLN ASP CYS CYS LYS ASN SEQRES 3 A 42 ALA GLY HIS ASN GLY GLY THR CYS MET PHE PHE LYS CYS SEQRES 4 A 42 LYS CYS ALA HELIX 1 1 ARG A 2 VAL A 6 5 5 HELIX 2 2 TYR A 17 GLY A 28 1 12 SHEET 1 A 3 TYR A 14 GLY A 15 0 SHEET 2 A 3 GLY A 32 MET A 35 -1 O CYS A 34 N GLY A 15 SHEET 3 A 3 CYS A 39 CYS A 41 -1 O LYS A 40 N THR A 33 SSBOND 1 CYS A 5 CYS A 23 1555 1555 2.03 SSBOND 2 CYS A 11 CYS A 34 1555 1555 2.01 SSBOND 3 CYS A 20 CYS A 39 1555 1555 2.02 SSBOND 4 CYS A 24 CYS A 41 1555 1555 2.02 CISPEP 1 MET A 35 PHE A 36 0 -5.34 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