PDB Short entry for 1A0M HEADER ACETYLCHOLINE RECEPTOR ANTAGONIST 03-DEC-97 1A0M TITLE 1.1 ANGSTROM CRYSTAL STRUCTURE OF A-CONOTOXIN [TYR15]-EPI COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-CONOTOXIN [TYR15]-EPI; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CONUS EPISCOPATUS; SOURCE 3 ORGANISM_TAXID: 88764 KEYWDS ACETYLCHOLINE RECEPTOR ANTAGONIST, A-CONOTOXIN, CRYSTAL KEYWDS 2 STRUCTURE, NEUROTOXIN EXPDTA X-RAY DIFFRACTION AUTHOR S.-H.HU,M.LOUGHNAN,R.MILLER,C.M.WEEKS,R.H.BLESSING, AUTHOR 2 P.F.ALEWOOD,R.J.LEWIS,J.L.MARTIN REVDAT 2 24-FEB-09 1A0M 1 VERSN REVDAT 1 13-JAN-99 1A0M 0 JRNL AUTH S.H.HU,M.LOUGHNAN,R.MILLER,C.M.WEEKS,R.H.BLESSING, JRNL AUTH 2 P.F.ALEWOOD,R.J.LEWIS,J.L.MARTIN JRNL TITL THE 1.1 A RESOLUTION CRYSTAL STRUCTURE OF JRNL TITL 2 [TYR15]EPI, A NOVEL ALPHA-CONOTOXIN FROM CONUS JRNL TITL 3 EPISCOPATUS, SOLVED BY DIRECT METHODS. JRNL REF BIOCHEMISTRY V. 37 11425 1998 JRNL REFN ISSN 0006-2960 JRNL PMID 9708977 JRNL DOI 10.1021/BI9806549 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. 1.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 6.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 88.1 REMARK 3 NUMBER OF REFLECTIONS : 8281 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.161 REMARK 3 FREE R VALUE : 0.178 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 870 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 8 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.10 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.15 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 61.20 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 632 REMARK 3 BIN R VALUE (WORKING SET) : 0.2530 REMARK 3 BIN FREE R VALUE : 0.2510 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 7.20 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 84 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 242 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 2 REMARK 3 SOLVENT ATOMS : 42 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 8.40 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 10.20 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.16 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : 6.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.20 REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.40 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 23.60 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.30 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.500 ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.000 ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : 2.000 ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.500 ; NULL REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: ANISOTROPIC B-FACTOR REFINEMENT REMARK 3 PERFORMED WITH SHELXL-97 GIVES AN R-FACTOR OF 13.4% AND AN R- REMARK 3 FREE OF 0.154. REMARK 4 REMARK 4 1A0M COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 27-JUL-96 REMARK 200 TEMPERATURE (KELVIN) : 286 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 2 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU RUH2R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NI FILTER REMARK 200 OPTICS : YALE MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 9265 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.100 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.4 REMARK 200 DATA REDUNDANCY : 4.100 REMARK 200 R MERGE (I) : 0.07100 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 25.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.10 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.14 REMARK 200 COMPLETENESS FOR SHELL (%) : 87.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.24000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 5.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: DIRECT METHODS REMARK 200 SOFTWARE USED: SHAKE-N-BAKE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 24.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.60 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.5 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 4 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -Y,X,Z REMARK 290 4555 Y,-X,Z REMARK 290 5555 X+1/2,Y+1/2,Z+1/2 REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -Y+1/2,X+1/2,Z+1/2 REMARK 290 8555 Y+1/2,-X+1/2,Z+1/2 REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 22.20000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 22.20000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 11.75000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 22.20000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 22.20000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 11.75000 REMARK 290 SMTRY1 7 0.000000 -1.000000 0.000000 22.20000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 22.20000 REMARK 290 SMTRY3 7 0.000000 0.000000 1.000000 11.75000 REMARK 290 SMTRY1 8 0.000000 1.000000 0.000000 22.20000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 22.20000 REMARK 290 SMTRY3 8 0.000000 0.000000 1.000000 11.75000 REMARK 290 REMARK 290 REMARK: NULL 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: DIMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B 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 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS(M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 ARG A 7 CG CD NE CZ NH1 NH2 REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH B 44 DISTANCE = 8.43 ANGSTROMS 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 17 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NH2 B 17 DBREF 1A0M A 1 16 UNP P56638 CXA1_CONEP 1 16 DBREF 1A0M B 1 16 UNP P56638 CXA1_CONEP 1 16 SEQRES 1 A 17 GLY CYS CYS SER ASP PRO ARG CYS ASN MET ASN ASN PRO SEQRES 2 A 17 ASP TYR CYS NH2 SEQRES 1 B 17 GLY CYS CYS SER ASP PRO ARG CYS ASN MET ASN ASN PRO SEQRES 2 B 17 ASP TYR CYS NH2 HET NH2 A 17 1 HET NH2 B 17 1 HETNAM NH2 AMINO GROUP FORMUL 1 NH2 2(H2 N) FORMUL 3 HOH *42(H2 O) HELIX 1 1 CYS A 2 SER A 4 5 3 HELIX 2 2 PRO A 6 ASN A 11 1 6 HELIX 3 3 PRO B 6 MET B 10 1 5 SSBOND 1 CYS A 2 CYS A 8 1555 1555 2.03 SSBOND 2 CYS A 3 CYS A 16 1555 1555 2.03 SSBOND 3 CYS B 2 CYS B 8 1555 1555 2.04 SSBOND 4 CYS B 3 CYS B 16 1555 1555 2.03 LINK N NH2 A 17 C CYS A 16 1555 1555 1.33 LINK N NH2 B 17 C CYS B 16 1555 1555 1.33 SITE 1 AC1 2 PRO A 13 CYS A 16 SITE 1 AC2 4 PRO B 13 CYS B 16 HOH A 21 HOH B 27 CRYST1 44.400 44.400 23.500 90.00 90.00 90.00 I 4 16 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 0.022523 0.000000 0.000000 0.00000 SCALE2 0.000000 0.022523 0.000000 0.00000 SCALE3 0.000000 0.000000 0.042553 0.00000