HEADER TOXIN 18-JAN-98 1XGB TITLE ALPHA CONOTOXIN GI: 2-13;3-7 DISULFIDE BOND ISOMER NMR, 24 TITLE 2 STRUCTURES COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN GI; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: GI(2-13,3-7); COMPND 5 ENGINEERED: YES; COMPND 6 OTHER_DETAILS: AMIDATED C-TERMINUS SOURCE MOL_ID: 1 KEYWDS ALPHA-CONOTOXIN, NICOTINIC ACETYLCHOLINE RECEPTOR, KEYWDS 2 DISULFIDE BOND ISOMERS, TOXIN EXPDTA SOLUTION NMR NUMMDL 24 AUTHOR J.GEHRMANN,P.F.ALEWOOD,D.J.CRAIK REVDAT 2 24-FEB-09 1XGB 1 VERSN REVDAT 1 16-FEB-99 1XGB 0 JRNL AUTH J.GEHRMANN,P.F.ALEWOOD,D.J.CRAIK JRNL TITL STRUCTURE DETERMINATION OF THE THREE DISULFIDE JRNL TITL 2 BOND ISOMERS OF ALPHA-CONOTOXIN GI: A MODEL FOR JRNL TITL 3 THE ROLE OF DISULFIDE BONDS IN STRUCTURAL JRNL TITL 4 STABILITY. JRNL REF J.MOL.BIOL. V. 278 401 1998 JRNL REFN ISSN 0022-2836 JRNL PMID 9571060 JRNL DOI 10.1006/JMBI.1998.1701 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1XGB 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) : 278 REMARK 210 PH : 3.5 REMARK 210 IONIC STRENGTH : 0 REMARK 210 PRESSURE : 1 ATM REMARK 210 SAMPLE CONTENTS : H2O/D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : TOCSY, NOESY, DQF-COSY, HMQC REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ REMARK 210 SPECTROMETER MODEL : ARX500 REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : X-PLOR 3.1 REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 50 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 24 REMARK 210 CONFORMERS, SELECTION CRITERIA : 24 LOWEST ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL REMARK 210 REMARK 210 REMARK: THE STRUCTURE WAS DETERMINED USING 300MS NOESY REMARK 210 EXPERIMENTS ON A 5MM SAMPLE OF GI(2-13;3-7). 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 7 CYS A 13 CA - CB - SG ANGL. DEV. = 6.8 DEGREES REMARK 500 8 CYS A 13 CA - CB - SG ANGL. DEV. = 6.8 DEGREES REMARK 500 9 CYS A 13 CA - CB - SG ANGL. DEV. = 7.0 DEGREES REMARK 500 11 CYS A 13 CA - CB - SG ANGL. DEV. = 7.3 DEGREES REMARK 500 15 CYS A 13 CA - CB - SG ANGL. DEV. = 6.9 DEGREES REMARK 500 16 CYS A 13 CA - CB - SG ANGL. DEV. = 6.6 DEGREES REMARK 500 21 CYS A 13 CA - CB - SG ANGL. DEV. = 9.6 DEGREES REMARK 500 24 CYS A 13 CA - CB - SG ANGL. DEV. = 8.1 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 CYS A 2 101.85 -49.65 REMARK 500 1 CYS A 3 55.86 36.87 REMARK 500 1 ALA A 6 69.47 -160.60 REMARK 500 1 HIS A 10 71.40 54.14 REMARK 500 2 CYS A 2 85.25 59.90 REMARK 500 2 CYS A 3 71.10 37.38 REMARK 500 2 ALA A 6 78.68 -164.80 REMARK 500 3 ALA A 6 57.31 -159.93 REMARK 500 4 CYS A 2 100.75 61.49 REMARK 500 4 CYS A 3 60.89 26.68 REMARK 500 4 ALA A 6 58.09 -162.69 REMARK 500 5 CYS A 3 59.80 -142.08 REMARK 500 5 ALA A 6 57.88 -160.69 REMARK 500 5 CYS A 7 29.09 49.90 REMARK 500 6 CYS A 3 56.05 -141.65 REMARK 500 6 ALA A 6 59.42 -161.00 REMARK 500 7 CYS A 2 109.19 -165.37 REMARK 500 7 ALA A 6 57.99 -160.95 REMARK 500 8 CYS A 2 109.19 -165.37 REMARK 500 8 ALA A 6 57.99 -160.95 REMARK 500 9 CYS A 2 102.23 -166.31 REMARK 500 9 ALA A 6 59.65 -163.79 REMARK 500 9 CYS A 7 46.27 39.49 REMARK 500 10 CYS A 3 67.64 8.81 REMARK 500 10 ALA A 6 60.11 -162.47 REMARK 500 10 HIS A 10 82.92 59.07 REMARK 500 11 ALA A 6 66.07 -156.82 REMARK 500 11 CYS A 7 29.54 48.34 REMARK 500 11 HIS A 10 85.67 58.68 REMARK 500 12 CYS A 2 85.83 58.48 REMARK 500 12 CYS A 3 59.15 21.87 REMARK 500 12 ALA A 6 57.32 -163.98 REMARK 500 13 CYS A 2 96.25 65.64 REMARK 500 13 CYS A 3 52.15 29.24 REMARK 500 13 ALA A 6 109.08 -169.08 REMARK 500 13 CYS A 7 -60.56 -0.01 REMARK 500 13 HIS A 10 77.49 58.00 REMARK 500 14 CYS A 3 54.24 34.75 REMARK 500 14 ALA A 6 54.84 -164.02 REMARK 500 15 CYS A 2 94.87 57.11 REMARK 500 15 CYS A 3 60.52 36.48 REMARK 500 15 ALA A 6 53.88 -162.92 REMARK 500 15 HIS A 10 77.09 58.64 REMARK 500 16 CYS A 3 72.56 43.17 REMARK 500 16 ALA A 6 72.52 -163.07 REMARK 500 16 HIS A 10 52.86 146.46 REMARK 500 17 CYS A 3 58.74 -141.74 REMARK 500 17 ALA A 6 62.53 -158.50 REMARK 500 17 CYS A 7 26.66 49.29 REMARK 500 17 HIS A 10 73.77 58.47 REMARK 500 18 CYS A 2 83.24 59.65 REMARK 500 18 CYS A 3 61.81 39.26 REMARK 500 18 ALA A 6 70.45 -160.10 REMARK 500 19 CYS A 3 54.13 22.00 REMARK 500 19 ALA A 6 53.44 -157.44 REMARK 500 19 CYS A 7 -54.70 73.42 REMARK 500 19 HIS A 10 71.61 49.58 REMARK 500 19 TYR A 11 158.64 -48.85 REMARK 500 20 CYS A 2 78.29 51.19 REMARK 500 20 ALA A 6 76.38 -164.55 REMARK 500 21 CYS A 3 65.40 28.81 REMARK 500 21 ALA A 6 70.78 -163.25 REMARK 500 21 CYS A 7 29.74 47.52 REMARK 500 22 CYS A 3 70.59 18.88 REMARK 500 22 ALA A 6 60.20 -163.34 REMARK 500 22 HIS A 10 64.49 37.61 REMARK 500 23 CYS A 2 101.23 57.16 REMARK 500 23 ALA A 6 67.14 -158.91 REMARK 500 23 CYS A 7 29.92 47.86 REMARK 500 24 CYS A 2 85.19 54.42 REMARK 500 24 CYS A 3 64.67 39.55 REMARK 500 24 ALA A 6 69.14 -161.87 REMARK 500 24 CYS A 7 29.42 46.35 REMARK 500 24 SER A 12 -157.46 -77.54 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 14 DBREF 1XGB A 1 13 UNP P01519 CXAA_CONGE 1 13 SEQRES 1 A 14 GLU CYS CYS ASN PRO ALA CYS GLY ARG HIS TYR SER CYS SEQRES 2 A 14 NH2 HET NH2 A 14 3 HETNAM NH2 AMINO GROUP FORMUL 1 NH2 H2 N SSBOND 1 CYS A 2 CYS A 13 1555 1555 2.02 SSBOND 2 CYS A 3 CYS A 7 1555 1555 2.02 LINK N NH2 A 14 C CYS A 13 1555 1555 1.31 CISPEP 1 ASN A 4 PRO A 5 1 2.65 CISPEP 2 ASN A 4 PRO A 5 2 0.16 CISPEP 3 ASN A 4 PRO A 5 3 10.45 CISPEP 4 ASN A 4 PRO A 5 4 6.14 CISPEP 5 ASN A 4 PRO A 5 5 9.73 CISPEP 6 ASN A 4 PRO A 5 6 10.47 CISPEP 7 ASN A 4 PRO A 5 7 7.07 CISPEP 8 ASN A 4 PRO A 5 8 7.07 CISPEP 9 ASN A 4 PRO A 5 9 3.64 CISPEP 10 ASN A 4 PRO A 5 10 8.60 CISPEP 11 ASN A 4 PRO A 5 11 8.57 CISPEP 12 ASN A 4 PRO A 5 12 4.90 CISPEP 13 ASN A 4 PRO A 5 13 -8.33 CISPEP 14 ASN A 4 PRO A 5 14 2.88 CISPEP 15 ASN A 4 PRO A 5 15 3.32 CISPEP 16 ASN A 4 PRO A 5 16 -10.68 CISPEP 17 ASN A 4 PRO A 5 17 11.92 CISPEP 18 ASN A 4 PRO A 5 18 5.31 CISPEP 19 ASN A 4 PRO A 5 19 9.43 CISPEP 20 ASN A 4 PRO A 5 20 -2.16 CISPEP 21 ASN A 4 PRO A 5 21 7.64 CISPEP 22 ASN A 4 PRO A 5 22 5.77 CISPEP 23 ASN A 4 PRO A 5 23 10.07 CISPEP 24 ASN A 4 PRO A 5 24 5.04 SITE 1 AC1 1 CYS A 13 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 MASTER 167 0 1 0 0 0 1 6 0 0 0 2 END