HEADER TOXIN 02-OCT-02 1MXN TITLE SOLUTION STRUCTURE OF ALPHA-CONOTOXIN AUIB COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN AUIB; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS PEPTIDE WAS SYNTHESISED BY BOC CHEMISTRY BUT SOURCE 4 OCCURS NATURALLY IN CONUS AULICUS. KEYWDS ALPHA HELIX, TOXIN EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR J.L.DUTTON,P.S.BANSAL,R.C.HOGG,D.J.ADAMS,P.F.ALEWOOD,D.J.CRAIK REVDAT 3 23-FEB-22 1MXN 1 REMARK LINK REVDAT 2 24-FEB-09 1MXN 1 VERSN REVDAT 1 30-DEC-02 1MXN 0 JRNL AUTH J.L.DUTTON,P.S.BANSAL,R.C.HOGG,D.J.ADAMS,P.F.ALEWOOD, JRNL AUTH 2 D.J.CRAIK JRNL TITL A NEW LEVEL OF CONOTOXIN DIVERSITY, A NON-NATIVE DISULFIDE JRNL TITL 2 BOND CONNECTIVITY IN ALPHA -CONOTOXIN AUIB REDUCES JRNL TITL 3 STRUCTURAL DEFINITION BUT INCREASES BIOLOGICAL ACTIVITY. JRNL REF J.BIOL.CHEM. V. 277 48849 2002 JRNL REFN ISSN 0021-9258 JRNL PMID 12376538 JRNL DOI 10.1074/JBC.M208842200 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : XWINNMR 2.6, X-PLOR 3.851 THEN 3.1F REMARK 3 AUTHORS : BRUKER (XWINNMR), BRUNGER (X-PLOR) REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: 32 MEDIUM AND 18 LONG RANGE NOES WERE REMARK 3 INCLUDED, 7 DIHEDRAL ANGLE RESTRAINTS WERE INCLUDED, 5 H-BOND REMARK 3 RESTRAINTS WERE INCLUDED REMARK 4 REMARK 4 1MXN COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 04-OCT-02. REMARK 100 THE DEPOSITION ID IS D_1000017284. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 290 REMARK 210 PH : 3.5 REMARK 210 IONIC STRENGTH : 0 REMARK 210 PRESSURE : ATMOSPHERIC ATM REMARK 210 SAMPLE CONTENTS : 2MM PEPTIDE REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY; 2D TOCSY; E-COSY; DQF REMARK 210 -COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 750 MHZ; 500 MHZ REMARK 210 SPECTROMETER MODEL : DMX; ARX REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : XWINNMR 2.6, X-PLOR 3.851 THEN REMARK 210 3.1F REMARK 210 METHOD USED : SIMULATED ANNEALING, MOLECULAR REMARK 210 DYNAMICS, ENERGY MINIMISATION IN REMARK 210 A CHARM FORCEFIELD REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 50 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : 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 : 8 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 3 CA - CB - SG ANGL. DEV. = 7.2 DEGREES REMARK 500 4 CYS A 2 CA - CB - SG ANGL. DEV. = 6.8 DEGREES REMARK 500 4 CYS A 3 CA - CB - SG ANGL. DEV. = 7.5 DEGREES REMARK 500 6 CYS A 2 CA - CB - SG ANGL. DEV. = 8.5 DEGREES REMARK 500 7 CYS A 2 CA - CB - SG ANGL. DEV. = 6.8 DEGREES REMARK 500 8 CYS A 2 CA - CB - SG ANGL. DEV. = 6.6 DEGREES REMARK 500 10 CYS A 2 CA - CB - SG ANGL. DEV. = 7.3 DEGREES REMARK 500 11 CYS A 2 CA - CB - SG ANGL. DEV. = 7.3 DEGREES REMARK 500 12 CYS A 2 CA - CB - SG ANGL. DEV. = 7.1 DEGREES REMARK 500 12 CYS A 3 CA - CB - SG ANGL. DEV. = 7.3 DEGREES REMARK 500 14 CYS A 3 CA - CB - SG ANGL. DEV. = 6.9 DEGREES REMARK 500 18 CYS A 3 CA - CB - SG ANGL. DEV. = 7.6 DEGREES REMARK 500 19 CYS A 2 CA - CB - SG ANGL. DEV. = 6.7 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 20 PRO A 13 -9.22 -59.31 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 16 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1MXP RELATED DB: PDB REMARK 900 1MXP CONTAINS SOLUTION STRUCTURE OF THE RIBBON DISULFIDE BOND REMARK 900 ISOMER OF THE SAME PROTEIN DBREF 1MXN A 1 15 UNP P56640 CXA2_CONAL 1 15 SEQRES 1 A 16 GLY CYS CYS SER TYR PRO PRO CYS PHE ALA THR ASN PRO SEQRES 2 A 16 ASP CYS NH2 HET NH2 A 16 3 HETNAM NH2 AMINO GROUP FORMUL 1 NH2 H2 N HELIX 1 1 GLY A 1 SER A 4 5 4 HELIX 2 2 TYR A 5 ASN A 12 1 8 SSBOND 1 CYS A 2 CYS A 8 1555 1555 2.02 SSBOND 2 CYS A 3 CYS A 15 1555 1555 2.02 LINK C CYS A 15 N NH2 A 16 1555 1555 1.31 SITE 1 AC1 3 PHE A 9 ASP A 14 CYS A 15 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