PDB Short entry for 2CTX HEADER NEUROTOXIN 24-SEP-91 2CTX TITLE THE REFINED CRYSTAL STRUCTURE OF ALPHA-COBRATOXIN FROM NAJA NAJA TITLE 2 SIAMENSIS AT 2.4-ANGSTROMS RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: ALPHA-COBRATOXIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: NAJA NAJA; SOURCE 3 ORGANISM_COMMON: INDIAN COBRA; SOURCE 4 ORGANISM_TAXID: 35670 KEYWDS NEUROTOXIN EXPDTA X-RAY DIFFRACTION AUTHOR C.BETZEL,G.LANGE,G.P.PAL,K.S.WILSON,A.MAELICKE,W.SAENGER REVDAT 6 29-NOV-17 2CTX 1 HELIX REVDAT 5 16-NOV-11 2CTX 1 VERSN HETATM REVDAT 4 24-FEB-09 2CTX 1 VERSN REVDAT 3 01-APR-03 2CTX 1 JRNL REVDAT 2 31-JAN-94 2CTX 1 REMARK REVDAT 1 31-OCT-93 2CTX 0 JRNL AUTH C.BETZEL,G.LANGE,G.P.PAL,K.S.WILSON,A.MAELICKE,W.SAENGER JRNL TITL THE REFINED CRYSTAL STRUCTURE OF ALPHA-COBRATOXIN FROM NAJA JRNL TITL 2 NAJA SIAMENSIS AT 2.4-A RESOLUTION. JRNL REF J.BIOL.CHEM. V. 266 21530 1991 JRNL REFN ISSN 0021-9258 JRNL PMID 1939183 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.A.HENDRICKSON,J.H.KONNERT REMARK 1 TITL RESTRAINED LEAST-SQUARES REMARK 1 EDIT R.SRINIVASAN REMARK 1 REF BIOMOLECULAR STRUCTURE, V. 1 43 1981 REMARK 1 REF 2 CONFORMATION, FUNCTION AND REMARK 1 REF 3 EVOLUTION REMARK 1 PUBL PERGAMON PRESS, OXFORD REMARK 1 REFN REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 3271 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : 0.195 REMARK 3 R VALUE (WORKING SET) : NULL REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 518 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 31 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.018 ; 0.010 REMARK 3 ANGLE DISTANCE (A) : 0.071 ; 0.020 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.085 ; 0.040 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.014 ; 0.020 REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.256 ; 0.100 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.247 ; 0.500 REMARK 3 MULTIPLE TORSION (A) : 0.403 ; 0.500 REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : 0.349 ; 0.500 REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : 2.600 ; 1.300 REMARK 3 STAGGERED (DEGREES) : 26.800; 12.000 REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.691 ; 1.000 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.865 ; 1.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.673 ; 1.300 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.904 ; 1.300 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2CTX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000177962. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 46.70 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.31 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 65 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/6 REMARK 290 6555 X-Y,X,Z+5/6 REMARK 290 7555 Y,X,-Z+2/3 REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z+1/3 REMARK 290 10555 -Y,-X,-Z+1/6 REMARK 290 11555 -X+Y,Y,-Z+1/2 REMARK 290 12555 X,X-Y,-Z+5/6 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 28.50667 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 14.25333 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 21.38000 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 7.12667 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 35.63333 REMARK 290 SMTRY1 7 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 7 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 28.50667 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 9 0.000000 0.000000 -1.000000 14.25333 REMARK 290 SMTRY1 10 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 10 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 -1.000000 7.12667 REMARK 290 SMTRY1 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 -1.000000 21.38000 REMARK 290 SMTRY1 12 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 12 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 12 0.000000 0.000000 -1.000000 35.63333 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 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 28.50667 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 73 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 88 LIES ON A SPECIAL POSITION. 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 ILE A 9 CB CG1 CG2 CD1 REMARK 470 ALA A 28 CB REMARK 470 ARG A 68 CB CG CD NE CZ NH1 NH2 REMARK 470 LYS A 69 CB CG CD CE NZ REMARK 470 ARG A 70 CG CD NE CZ NH1 NH2 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 OD2 ASP A 13 O HOH A 90 2.11 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 CE1 PHE A 29 CE2 PHE A 65 6654 2.09 REMARK 500 O HOH A 84 O HOH A 84 12565 2.16 REMARK 500 REMARK 500 REMARK: NULL 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 ARG A 2 CD - NE - CZ ANGL. DEV. = 39.9 DEGREES REMARK 500 ARG A 2 NH1 - CZ - NH2 ANGL. DEV. = 10.6 DEGREES REMARK 500 ARG A 2 NE - CZ - NH1 ANGL. DEV. = -4.3 DEGREES REMARK 500 ARG A 2 NE - CZ - NH2 ANGL. DEV. = -6.2 DEGREES REMARK 500 ARG A 2 CA - C - N ANGL. DEV. = -15.1 DEGREES REMARK 500 PHE A 4 CB - CG - CD2 ANGL. DEV. = 4.5 DEGREES REMARK 500 THR A 10 CA - CB - CG2 ANGL. DEV. = 20.7 DEGREES REMARK 500 ASN A 16 CA - CB - CG ANGL. DEV. = -13.6 DEGREES REMARK 500 CYS A 20 N - CA - CB ANGL. DEV. = 9.8 DEGREES REMARK 500 CYS A 26 CA - CB - SG ANGL. DEV. = 13.3 DEGREES REMARK 500 CYS A 30 CA - CB - SG ANGL. DEV. = -19.5 DEGREES REMARK 500 SER A 31 C - N - CA ANGL. DEV. = 16.3 DEGREES REMARK 500 ARG A 36 CD - NE - CZ ANGL. DEV. = -9.3 DEGREES REMARK 500 ARG A 36 NE - CZ - NH1 ANGL. DEV. = -12.1 DEGREES REMARK 500 ARG A 36 NE - CZ - NH2 ANGL. DEV. = 12.8 DEGREES REMARK 500 VAL A 37 CA - CB - CG2 ANGL. DEV. = 14.3 DEGREES REMARK 500 LEU A 39 CA - CB - CG ANGL. DEV. = 19.2 DEGREES REMARK 500 CYS A 41 N - CA - CB ANGL. DEV. = 12.3 DEGREES REMARK 500 ALA A 42 CB - CA - C ANGL. DEV. = 9.2 DEGREES REMARK 500 ALA A 43 N - CA - CB ANGL. DEV. = 9.9 DEGREES REMARK 500 ALA A 43 O - C - N ANGL. DEV. = 9.7 DEGREES REMARK 500 THR A 47 CA - CB - OG1 ANGL. DEV. = -14.7 DEGREES REMARK 500 ASP A 53 CB - CA - C ANGL. DEV. = 26.7 DEGREES REMARK 500 ASP A 53 OD1 - CG - OD2 ANGL. DEV. = 14.4 DEGREES REMARK 500 ASP A 53 CB - CG - OD2 ANGL. DEV. = -13.0 DEGREES REMARK 500 CYS A 57 CA - CB - SG ANGL. DEV. = 7.9 DEGREES REMARK 500 ASP A 60 CB - CG - OD1 ANGL. DEV. = 8.0 DEGREES REMARK 500 ASP A 60 CB - CG - OD2 ANGL. DEV. = -7.5 DEGREES REMARK 500 ASN A 61 O - C - N ANGL. DEV. = -10.6 DEGREES REMARK 500 ASN A 63 CB - CG - OD1 ANGL. DEV. = -13.1 DEGREES REMARK 500 THR A 67 N - CA - CB ANGL. DEV. = 12.8 DEGREES REMARK 500 ARG A 70 C - N - CA ANGL. DEV. = 18.0 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 ARG A 33 -67.94 -107.32 REMARK 500 ARG A 68 -26.90 127.21 REMARK 500 LYS A 69 25.51 105.82 REMARK 500 ARG A 70 -68.67 -159.34 REMARK 500 REMARK 500 REMARK: NULL DBREF 2CTX A 1 71 UNP P25671 NXL3_NAJNA 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 FORMUL 2 HOH *31(H2 O) SHEET 1 A 3 ARG A 36 GLY A 40 0 SHEET 2 A 3 CYS A 20 TRP A 25 -1 SHEET 3 A 3 ASP A 53 CYS A 57 -1 SHEET 1 B 2 CYS A 3 PHE A 4 0 SHEET 2 B 2 LYS A 12 ASP A 13 -1 SSBOND 1 CYS A 3 CYS A 20 1555 1555 2.06 SSBOND 2 CYS A 14 CYS A 41 1555 1555 2.08 SSBOND 3 CYS A 26 CYS A 30 1555 1555 2.04 SSBOND 4 CYS A 45 CYS A 56 1555 1555 2.06 SSBOND 5 CYS A 57 CYS A 62 1555 1555 2.10 CISPEP 1 THR A 6 PRO A 7 0 3.62 CRYST1 76.610 76.610 42.760 90.00 90.00 120.00 P 65 2 2 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 0.013053 0.007536 0.000000 0.00000 SCALE2 0.000000 0.015072 0.000000 0.00000 SCALE3 0.000000 0.000000 0.023386 0.00000