HEADER PEPTIDE TOXIN 18-NOV-98 1IM1 TITLE NMR SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IM1, 20 STRUCTURES COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN IM1; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 OTHER_DETAILS: NEUROTOXIN SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CONUS IMPERIALIS; SOURCE 3 ORGANISM_TAXID: 35631 KEYWDS PEPTIDE TOXIN, NEUROTOXIN, NICOTINIC ACETYLCHOLINE RECEPTOR KEYWDS 2 ANTAGONIST, ALPHA-CONOTOXIN EXPDTA SOLUTION NMR NUMMDL 20 AUTHOR J.P.ROGERS,P.LUGINBUHL,G.S.SHEN,R.T.MCCABE,R.C.STEVENS,D.E.WEMMER REVDAT 4 23-FEB-22 1IM1 1 REMARK REVDAT 3 24-FEB-09 1IM1 1 VERSN REVDAT 2 01-APR-03 1IM1 1 JRNL REVDAT 1 15-JUN-99 1IM1 0 JRNL AUTH J.P.ROGERS,P.LUGINBUHL,G.S.SHEN,R.T.MCCABE,R.C.STEVENS, JRNL AUTH 2 D.E.WEMMER JRNL TITL NMR SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IMI AND COMPARISON JRNL TITL 2 TO OTHER CONOTOXINS SPECIFIC FOR NEURONAL NICOTINIC JRNL TITL 3 ACETYLCHOLINE RECEPTORS. JRNL REF BIOCHEMISTRY V. 38 3874 1999 JRNL REFN ISSN 0006-2960 JRNL PMID 10194298 JRNL DOI 10.1021/BI9826254 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH D.S.JOHNSON,J.MARTINEZ,A.B.ELGOYHEN,S.F.HEINEMANN, REMARK 1 AUTH 2 J.M.MCINTOSH REMARK 1 TITL ALPHA-CONOTOXIN IMI EXHIBITS SUBTYPE-SPECIFIC NICOTINIC REMARK 1 TITL 2 ACETYLCHOLINE RECEPTOR BLOCKADE: PREFERENTIAL INHIBITION OF REMARK 1 TITL 3 HOMOMERIC ALPHA 7 AND ALPHA 9 RECEPTORS REMARK 1 REF MOL.PHARMACOL. V. 48 194 1995 REMARK 1 REFN ISSN 0026-895X REMARK 1 REFERENCE 2 REMARK 1 AUTH J.M.MCINTOSH,D.YOSHIKAMI,E.MAHE,D.B.NIELSEN,J.E.RIVIER, REMARK 1 AUTH 2 W.R.GRAY,B.M.OLIVERA REMARK 1 TITL A NICOTINIC ACETYLCHOLINE RECEPTOR LIGAND OF UNIQUE REMARK 1 TITL 2 SPECIFICITY, ALPHA-CONOTOXIN IMI REMARK 1 REF J.BIOL.CHEM. V. 269 16733 1994 REMARK 1 REFN ISSN 0021-9258 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : DYANA REMARK 3 AUTHORS : LUGINBUHL,GUNTERT,BILLETER, WUTHRICH REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: FOR THE PRESENT STRUCTURES THE NMR REMARK 3 DISTANCE CONSTRAINTS WERE WEIGHTED SUCH THAT A VIOLATION OF AN REMARK 3 UPPER DISTANCE LIMIT OF 0.1 ANGSTROM CORRESPONDS TO AN ENERGY OF REMARK 3 KT/2. THE CONSTRAINTS ON DIHEDRAL ANGLES RESULTING FROM REMARK 3 MEASUREMENTS OF VICINAL COUPLING CONSTANTS WERE WEIGHTED SUCH REMARK 3 THAT A VIOLATION OF 2.5 DEGREES CORRESPONDS TO AN ENERGY OF KT/2. REMARK 4 REMARK 4 1IM1 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000174190. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298 REMARK 210 PH : 3.0 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : NULL REMARK 210 SAMPLE CONTENTS : 90% H2O/10% D2O OR 100% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : TOCSY; ROESY; DQF-COSY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ; 300 MHZ REMARK 210 SPECTROMETER MODEL : DRX500; DRX300 REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : DYANA, OPAL REMARK 210 METHOD USED : DISTANCE GEOMETRY, RESTRAINED REMARK 210 ENERGY REFINEMENT REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 20 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 20 REMARK 210 CONFORMERS, SELECTION CRITERIA : LOWEST RESIDUAL TARGET FUNCTION REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 3 REMARK 210 REMARK 210 REMARK: NULL 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: 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 11 -15.83 45.88 REMARK 500 2 ARG A 11 10.12 46.39 REMARK 500 3 ARG A 11 26.87 45.92 REMARK 500 4 ARG A 11 -11.54 46.79 REMARK 500 5 CYS A 3 -33.33 -39.27 REMARK 500 5 CYS A 8 22.93 -147.64 REMARK 500 5 ARG A 11 -9.50 73.51 REMARK 500 6 ARG A 11 -12.44 73.53 REMARK 500 7 CYS A 3 -0.48 -54.83 REMARK 500 7 ARG A 11 -17.06 73.87 REMARK 500 8 ARG A 11 -7.14 73.14 REMARK 500 9 TRP A 10 -155.33 -65.16 REMARK 500 9 ARG A 11 54.04 -68.26 REMARK 500 10 ARG A 11 -19.68 74.52 REMARK 500 11 ARG A 11 26.02 45.68 REMARK 500 13 ARG A 11 -8.06 73.40 REMARK 500 14 CYS A 3 9.77 -65.76 REMARK 500 14 ARG A 11 -17.75 73.11 REMARK 500 15 ARG A 11 -25.47 75.42 REMARK 500 16 ARG A 11 17.90 46.20 REMARK 500 17 ARG A 11 -8.85 73.05 REMARK 500 18 TRP A 10 -144.12 -66.12 REMARK 500 18 ARG A 11 32.02 -63.95 REMARK 500 19 ARG A 11 27.94 45.77 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 13 ARG A 11 0.09 SIDE CHAIN REMARK 500 18 ARG A 7 0.09 SIDE CHAIN REMARK 500 18 ARG A 11 0.10 SIDE CHAIN REMARK 500 19 ARG A 7 0.10 SIDE CHAIN REMARK 500 19 ARG A 11 0.10 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL DBREF 1IM1 A 1 12 UNP P50983 CXA1_CONIM 1 12 SEQRES 1 A 12 GLY CYS CYS SER ASP PRO ARG CYS ALA TRP ARG CYS HELIX 1 1 CYS A 2 SER A 4 5 3 HELIX 2 2 PRO A 6 CYS A 8 5 3 SSBOND 1 CYS A 2 CYS A 8 1555 1555 2.04 SSBOND 2 CYS A 3 CYS A 12 1555 1555 2.02 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