PDB Short entry for 4AEA HEADER TOXIN 09-JAN-12 4AEA TITLE DIMERIC ALPHA-COBRATOXIN X-RAY STRUCTURE: LOCALIZATION OF TITLE 2 INTERMOLECULAR DISULFIDES AND POSSIBLE MODE OF BINDING TO NICOTINIC TITLE 3 ACETYLCHOLINE RECEPTORS COMPND MOL_ID: 1; COMPND 2 MOLECULE: LONG NEUROTOXIN 1; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: ALPHA-COBRATOXIN, ALPHA-CBT, CBTX, NEUROTOXIN 3, DIMERIC COMPND 5 ALPHA-COBRATOXIN SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: NAJA KAOUTHIA; SOURCE 3 ORGANISM_COMMON: MONOCLED COBRA; SOURCE 4 ORGANISM_TAXID: 8649; SOURCE 5 OTHER_DETAILS: ISOLATED FROM N. KAOUTHIA VENOM KEYWDS TOXIN, THREE-FINGER TOXIN, NICOTINIC ACETYLCHOLINE RECEPTOR EXPDTA X-RAY DIFFRACTION AUTHOR P.RUCKTOOA,A.V.OSIPOV,I.E.KASHEVEROV,S.Y.FILKIN,V.G.STARKOV, AUTHOR 2 T.V.ANDREEVA,D.BERTRAND,Y.N.UTKIN,V.I.TSETLIN,T.K.SIXMA REVDAT 3 20-DEC-23 4AEA 1 REMARK REVDAT 2 15-AUG-12 4AEA 1 JRNL REVDAT 1 25-JAN-12 4AEA 0 JRNL AUTH A.V.OSIPOV,P.RUCKTOOA,I.E.KASHEVEROV,S.Y.FILKIN,V.G.STARKOV, JRNL AUTH 2 T.V.ANDREEVA,T.K.SIXMA,D.BERTRAND,Y.N.UTKIN,V.I.TSETLIN JRNL TITL DIMERIC ALPHA-COBRATOXIN X-RAY STRUCTURE: LOCALIZATION OF JRNL TITL 2 INTERMOLECULAR DISULFIDES AND POSSIBLE MODE OF BINDING TO JRNL TITL 3 NICOTINIC ACETYLCHOLINE RECEPTORS. JRNL REF J.BIOL.CHEM. V. 287 6725 2012 JRNL REFN ISSN 0021-9258 JRNL PMID 22223648 JRNL DOI 10.1074/JBC.M111.322313 REMARK 2 REMARK 2 RESOLUTION. 1.94 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.5.0099 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.94 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 37.24 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 11282 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 + TEST SET) : 0.220 REMARK 3 R VALUE (WORKING SET) : 0.219 REMARK 3 FREE R VALUE : 0.251 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 594 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.94 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.99 REMARK 3 REFLECTION IN BIN (WORKING SET) : 800 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 BIN R VALUE (WORKING SET) : 0.2970 REMARK 3 BIN FREE R VALUE SET COUNT : 42 REMARK 3 BIN FREE R VALUE : 0.3790 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1004 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 13 REMARK 3 SOLVENT ATOMS : 69 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 33.34 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.55000 REMARK 3 B22 (A**2) : -0.55000 REMARK 3 B33 (A**2) : 0.82000 REMARK 3 B12 (A**2) : -0.27000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.171 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.154 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.114 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 8.758 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.938 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.910 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1047 ; 0.006 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1428 ; 1.054 ; 1.954 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 132 ; 6.025 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 38 ;28.182 ;23.684 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 160 ;12.751 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 6 ; 9.027 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 165 ; 0.066 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 772 ; 0.004 ; 0.022 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 674 ; 0.434 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1106 ; 0.799 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 373 ; 0.746 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 322 ; 1.226 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 2 REMARK 3 REMARK 3 TLS GROUP : 1 REMARK 3 NUMBER OF COMPONENTS GROUP : 1 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : A 1 A 67 REMARK 3 ORIGIN FOR THE GROUP (A): -20.2760 49.0890 12.2840 REMARK 3 T TENSOR REMARK 3 T11: 0.1621 T22: 0.1431 REMARK 3 T33: 0.1594 T12: -0.0615 REMARK 3 T13: 0.0272 T23: 0.0266 REMARK 3 L TENSOR REMARK 3 L11: 0.4903 L22: 0.5363 REMARK 3 L33: 2.3674 L12: 0.2517 REMARK 3 L13: 0.7403 L23: 1.0908 REMARK 3 S TENSOR REMARK 3 S11: -0.0585 S12: 0.0794 S13: 0.0893 REMARK 3 S21: -0.1283 S22: 0.0154 S23: 0.0040 REMARK 3 S31: -0.2331 S32: 0.0605 S33: 0.0430 REMARK 3 REMARK 3 TLS GROUP : 2 REMARK 3 NUMBER OF COMPONENTS GROUP : 1 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : B 1 B 67 REMARK 3 ORIGIN FOR THE GROUP (A): -21.5780 20.9310 10.7740 REMARK 3 T TENSOR REMARK 3 T11: 0.2008 T22: 0.1761 REMARK 3 T33: 0.1907 T12: -0.0697 REMARK 3 T13: -0.0358 T23: -0.0427 REMARK 3 L TENSOR REMARK 3 L11: 0.3206 L22: 1.7607 REMARK 3 L33: 3.0202 L12: 0.2271 REMARK 3 L13: -0.8008 L23: -1.7581 REMARK 3 S TENSOR REMARK 3 S11: -0.0962 S12: 0.0978 S13: -0.0686 REMARK 3 S21: -0.2544 S22: 0.0289 S23: 0.0662 REMARK 3 S31: 0.4447 S32: -0.0888 S33: 0.0674 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.40 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS. REMARK 4 REMARK 4 4AEA COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 09-JAN-12. REMARK 100 THE DEPOSITION ID IS D_1290050885. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-MAR-08 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 2 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : ID14-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.934 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC CCD REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 11890 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.940 REMARK 200 RESOLUTION RANGE LOW (A) : 37.240 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.8 REMARK 200 DATA REDUNDANCY : 7.700 REMARK 200 R MERGE (I) : 0.08000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 17.9000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.94 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.05 REMARK 200 COMPLETENESS FOR SHELL (%) : 98.7 REMARK 200 DATA REDUNDANCY IN SHELL : 6.70 REMARK 200 R MERGE FOR SHELL (I) : 0.88000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.100 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: PDB ENTRY 2CTX REMARK 200 REMARK 200 REMARK: NONE REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 50.44 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.48 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 60% (V/V) 2-METHYL-2,4- PENTANEDIOL, REMARK 280 0.1 M GLYCINE-HCL PH 2 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+2/3 REMARK 290 6555 -X,-X+Y,-Z+1/3 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 12.37333 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 24.74667 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 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 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 24.74667 REMARK 290 SMTRY1 6 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 12.37333 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 3430 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 8910 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -38.1 KCAL/MOL 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 350 BIOMT1 2 -0.500000 -0.866025 0.000000 0.00000 REMARK 350 BIOMT2 2 -0.866025 0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 12.37333 REMARK 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 2870 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 8780 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -18.3 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 350 BIOMT1 2 -0.500000 -0.866025 0.000000 0.00000 REMARK 350 BIOMT2 2 -0.866025 0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 12.37333 REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 ARG A 68 REMARK 465 LYS A 69 REMARK 465 ARG A 70 REMARK 465 PRO A 71 REMARK 465 ARG B 68 REMARK 465 LYS B 69 REMARK 465 ARG B 70 REMARK 465 PRO B 71 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 PHE A 29 45.34 -106.41 REMARK 500 ASN A 63 58.81 -115.62 REMARK 500 ASP B 27 -161.49 -103.67 REMARK 500 ASN B 63 57.91 -114.54 REMARK 500 PRO B 66 2.82 -54.54 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 MPD A 100 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GLY A 1068 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1LXH RELATED DB: PDB REMARK 900 SOLUTION STRUCTURE OF ALPHA-COBRATOXIN COMPLEXED WITH ACOGNATE REMARK 900 PEPTIDE (MINIMIZED AVERAGE STRUCTURE) REMARK 900 RELATED ID: 1LXG RELATED DB: PDB REMARK 900 SOLUTION STRUCTURE OF ALPHA-COBRATOXIN COMPLEXED WITH ACOGNATE REMARK 900 PEPTIDE (STRUCTURE ENSEMBLE) REMARK 900 RELATED ID: 1CTX RELATED DB: PDB REMARK 900 ALPHA COBRATOXIN DBREF 4AEA A 1 71 UNP P01391 NXL1_NAJKA 1 71 DBREF 4AEA B 1 71 UNP P01391 NXL1_NAJKA 1 71 SEQRES 1 A 71 ILE ARG CYS PHE ILE THR PRO ASP ILE THR SER LYS ASP SEQRES 2 A 71 CYS PRO ASN GLY HIS VAL CYS TYR THR LYS THR TRP CYS SEQRES 3 A 71 ASP ALA PHE CYS SER ILE ARG GLY LYS ARG VAL ASP LEU SEQRES 4 A 71 GLY CYS ALA ALA THR CYS PRO THR VAL LYS THR GLY VAL SEQRES 5 A 71 ASP ILE GLN CYS CYS SER THR ASP ASN CYS ASN PRO PHE SEQRES 6 A 71 PRO THR ARG LYS ARG PRO SEQRES 1 B 71 ILE ARG CYS PHE ILE THR PRO ASP ILE THR SER LYS ASP SEQRES 2 B 71 CYS PRO ASN GLY HIS VAL CYS TYR THR LYS THR TRP CYS SEQRES 3 B 71 ASP ALA PHE CYS SER ILE ARG GLY LYS ARG VAL ASP LEU SEQRES 4 B 71 GLY CYS ALA ALA THR CYS PRO THR VAL LYS THR GLY VAL SEQRES 5 B 71 ASP ILE GLN CYS CYS SER THR ASP ASN CYS ASN PRO PHE SEQRES 6 B 71 PRO THR ARG LYS ARG PRO HET GLY A1068 5 HET MPD A 100 8 HETNAM GLY GLYCINE HETNAM MPD (4S)-2-METHYL-2,4-PENTANEDIOL FORMUL 3 GLY C2 H5 N O2 FORMUL 4 MPD C6 H14 O2 FORMUL 5 HOH *69(H2 O) HELIX 1 1 PHE A 29 GLY A 34 1 6 HELIX 2 2 PHE B 29 GLY B 34 1 6 SHEET 1 AA 3 ARG A 36 ALA A 42 0 SHEET 2 AA 3 VAL A 19 TRP A 25 -1 O VAL A 19 N ALA A 42 SHEET 3 AA 3 VAL A 52 CYS A 57 -1 O ASP A 53 N THR A 24 SHEET 1 BA 3 ARG B 36 ALA B 42 0 SHEET 2 BA 3 VAL B 19 TRP B 25 -1 O VAL B 19 N ALA B 42 SHEET 3 BA 3 VAL B 52 CYS B 57 -1 O ASP B 53 N THR B 24 SSBOND 1 CYS A 3 CYS A 20 1555 6555 2.03 SSBOND 2 CYS A 14 CYS A 41 1555 1555 2.03 SSBOND 3 CYS A 26 CYS A 30 1555 1555 2.03 SSBOND 4 CYS A 45 CYS A 56 1555 1555 2.03 SSBOND 5 CYS A 57 CYS A 62 1555 1555 2.02 SSBOND 6 CYS B 3 CYS B 20 1555 6555 2.04 SSBOND 7 CYS B 14 CYS B 41 1555 1555 2.03 SSBOND 8 CYS B 26 CYS B 30 1555 1555 2.03 SSBOND 9 CYS B 45 CYS B 56 1555 1555 2.03 SSBOND 10 CYS B 57 CYS B 62 1555 1555 2.02 SITE 1 AC1 4 PHE A 4 PRO A 64 PHE A 65 THR B 50 SITE 1 AC2 1 ILE A 5 CRYST1 86.000 86.000 37.120 90.00 90.00 120.00 P 31 2 1 12 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 0.011628 0.006713 0.000000 0.00000 SCALE2 0.000000 0.013427 0.000000 0.00000 SCALE3 0.000000 0.000000 0.026940 0.00000