HEADER DISULFIDE OXIDOREDUCTASE 28-AUG-96 1FVK TITLE THE 1.7 ANGSTROM STRUCTURE OF WILD TYPE DISULFIDE BOND FORMATION TITLE 2 PROTEIN (DSBA) COMPND MOL_ID: 1; COMPND 2 MOLECULE: DISULFIDE BOND FORMATION PROTEIN; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: DSBA SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562 KEYWDS PROTEIN DISULFIDE ISOMERASE, PROTEIN FOLDING, REDOX PROTEIN, REDOX- KEYWDS 2 ACTIVE CENTER, DISULFIDE OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR J.L.MARTIN,L.W.GUDDAT REVDAT 5 30-OCT-24 1FVK 1 REMARK REVDAT 4 09-AUG-23 1FVK 1 REMARK REVDAT 3 24-FEB-09 1FVK 1 VERSN REVDAT 2 01-APR-03 1FVK 1 JRNL REVDAT 1 20-AUG-97 1FVK 0 JRNL AUTH L.W.GUDDAT,J.C.BARDWELL,R.GLOCKSHUBER,M.HUBER-WUNDERLICH, JRNL AUTH 2 T.ZANDER,J.L.MARTIN JRNL TITL STRUCTURAL ANALYSIS OF THREE HIS32 MUTANTS OF DSBA: SUPPORT JRNL TITL 2 FOR AN ELECTROSTATIC ROLE OF HIS32 IN DSBA STABILITY. JRNL REF PROTEIN SCI. V. 6 1893 1997 JRNL REFN ISSN 0961-8368 JRNL PMID 9300489 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.L.MARTIN,J.C.BARDWELL,J.KURIYAN REMARK 1 TITL CRYSTAL STRUCTURE OF THE DSBA PROTEIN REQUIRED FOR REMARK 1 TITL 2 DISULPHIDE BOND FORMATION IN VIVO REMARK 1 REF NATURE V. 365 464 1993 REMARK 1 REFN ISSN 0028-0836 REMARK 1 REFERENCE 2 REMARK 1 AUTH J.L.MARTIN,G.WAKSMAN,J.C.BARDWELL,J.BECKWITH,J.KURIYAN REMARK 1 TITL CRYSTALLIZATION OF DSBA, AN ESCHERICHIA COLI PROTEIN REMARK 1 TITL 2 REQUIRED FOR DISULPHIDE BOND FORMATION IN VIVO REMARK 1 REF J.MOL.BIOL. V. 230 1097 1993 REMARK 1 REFN ISSN 0022-2836 REMARK 2 REMARK 2 RESOLUTION. 1.70 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) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 50.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 1.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 90.5 REMARK 3 NUMBER OF REFLECTIONS : 46502 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : YES REMARK 3 FREE R VALUE TEST SET SELECTION : YES REMARK 3 R VALUE (WORKING SET) : 0.198 REMARK 3 FREE R VALUE : 0.231 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.000 REMARK 3 FREE R VALUE TEST SET COUNT : 4483 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 : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.70 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.78 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 78.30 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4478 REMARK 3 BIN R VALUE (WORKING SET) : 0.3980 REMARK 3 BIN FREE R VALUE : 0.4000 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 8.51 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 545 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 : 2904 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 248 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 21.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 33.10 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) : 0.22 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : 50.0 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.28 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) : 1.390 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.86 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.060 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) : NULL ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; 2.500 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: NULL REMARK 4 REMARK 4 1FVK 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_1000173437. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-JUL-95 REMARK 200 TEMPERATURE (KELVIN) : 289 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 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 : GRAPHITE(002) REMARK 200 OPTICS : YALE MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU REMARK 200 INTENSITY-INTEGRATION SOFTWARE : RIGAKU SOFTWARE REMARK 200 DATA SCALING SOFTWARE : RIGAKU REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 46502 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.700 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.300 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 90.5 REMARK 200 DATA REDUNDANCY : 2.800 REMARK 200 R MERGE (I) : 0.06350 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 14.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.78 REMARK 200 COMPLETENESS FOR SHELL (%) : 84.1 REMARK 200 DATA REDUNDANCY IN SHELL : 1.70 REMARK 200 R MERGE FOR SHELL (I) : 0.32800 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.360 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR REMARK 200 SOFTWARE USED: X-PLOR 3.1 REMARK 200 STARTING MODEL: PDB ENTRY 1DSD REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 55.86 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.79 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.5 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 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 X+1/2,Y+1/2,Z REMARK 290 4555 -X+1/2,Y+1/2,-Z 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 1.000000 0.000000 0.000000 58.85000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 32.55000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 58.85000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 32.55000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 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 300 REMARK: THERE ARE TWO MOLECULES IN THE ASYMMETRIC UNIT. EACH REMARK 300 CONTAINS 189 RESIDUES, BUT THE LAST RESIDUE (189) IS NOT. REMARK 300 OBSERVED. THE ACTIVE SITE DISULFIDE RESIDUES ARE CYS 30 REMARK 300 AND CYS 33. PRO 151 FORMS PART OF THE ACTIVE SITE. 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 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 LYS A 189 REMARK 465 LYS B 189 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 GLU A 13 CG CD OE1 OE2 REMARK 470 LYS A 14 CG CD CE NZ REMARK 470 GLU A 52 CG CD OE1 OE2 REMARK 470 LYS A 55 CG CD CE NZ REMARK 470 ARG A 148 CG CD NE CZ NH1 NH2 REMARK 470 GLN A 164 CG CD OE1 NE2 REMARK 470 GLU B 13 CG CD OE1 OE2 REMARK 470 LYS B 14 CG CD CE NZ REMARK 470 LYS B 47 CG CD CE NZ REMARK 470 GLU B 52 CG CD OE1 OE2 REMARK 470 LYS B 132 CG CD CE NZ REMARK 470 ARG B 148 CG CD NE CZ NH1 NH2 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 OE1 GLN A 176 O HOH A 534 4546 0.72 REMARK 500 CD GLN A 176 O HOH A 534 4546 1.34 REMARK 500 NE2 GLN A 176 O HOH A 534 4546 1.97 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 LYS A 7 -96.40 -98.04 REMARK 500 PHE A 63 9.98 -66.61 REMARK 500 ASN A 156 24.38 49.80 REMARK 500 LYS B 7 -81.69 -108.10 REMARK 500 PHE B 63 13.25 -64.86 REMARK 500 REMARK 500 REMARK: NULL REMARK 650 REMARK 650 HELIX REMARK 650 HELIX A1' IS SEPARATED FROM A1 BY A THREE RESIDUE LOOP. REMARK 650 HELIX B1' IS SEPARATED FROM B1 BY A THREE RESIDUE LOOP. REMARK 650 HELIX A3 IS KINKED BY PRO A 91 AND HELIX B3 BY PRO B 91. REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAA REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: THE ACTIVE SITE. REMARK 800 REMARK 800 SITE_IDENTIFIER: CAB REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: THE ACTIVE SITE. DBREF 1FVK A 1 189 UNP P24991 DSBA_ECOLI 20 208 DBREF 1FVK B 1 189 UNP P24991 DSBA_ECOLI 20 208 SEQRES 1 A 189 ALA GLN TYR GLU ASP GLY LYS GLN TYR THR THR LEU GLU SEQRES 2 A 189 LYS PRO VAL ALA GLY ALA PRO GLN VAL LEU GLU PHE PHE SEQRES 3 A 189 SER PHE PHE CYS PRO HIS CYS TYR GLN PHE GLU GLU VAL SEQRES 4 A 189 LEU HIS ILE SER ASP ASN VAL LYS LYS LYS LEU PRO GLU SEQRES 5 A 189 GLY VAL LYS MET THR LYS TYR HIS VAL ASN PHE MET GLY SEQRES 6 A 189 GLY ASP LEU GLY LYS ASP LEU THR GLN ALA TRP ALA VAL SEQRES 7 A 189 ALA MET ALA LEU GLY VAL GLU ASP LYS VAL THR VAL PRO SEQRES 8 A 189 LEU PHE GLU GLY VAL GLN LYS THR GLN THR ILE ARG SER SEQRES 9 A 189 ALA SER ASP ILE ARG ASP VAL PHE ILE ASN ALA GLY ILE SEQRES 10 A 189 LYS GLY GLU GLU TYR ASP ALA ALA TRP ASN SER PHE VAL SEQRES 11 A 189 VAL LYS SER LEU VAL ALA GLN GLN GLU LYS ALA ALA ALA SEQRES 12 A 189 ASP VAL GLN LEU ARG GLY VAL PRO ALA MET PHE VAL ASN SEQRES 13 A 189 GLY LYS TYR GLN LEU ASN PRO GLN GLY MET ASP THR SER SEQRES 14 A 189 ASN MET ASP VAL PHE VAL GLN GLN TYR ALA ASP THR VAL SEQRES 15 A 189 LYS TYR LEU SER GLU LYS LYS SEQRES 1 B 189 ALA GLN TYR GLU ASP GLY LYS GLN TYR THR THR LEU GLU SEQRES 2 B 189 LYS PRO VAL ALA GLY ALA PRO GLN VAL LEU GLU PHE PHE SEQRES 3 B 189 SER PHE PHE CYS PRO HIS CYS TYR GLN PHE GLU GLU VAL SEQRES 4 B 189 LEU HIS ILE SER ASP ASN VAL LYS LYS LYS LEU PRO GLU SEQRES 5 B 189 GLY VAL LYS MET THR LYS TYR HIS VAL ASN PHE MET GLY SEQRES 6 B 189 GLY ASP LEU GLY LYS ASP LEU THR GLN ALA TRP ALA VAL SEQRES 7 B 189 ALA MET ALA LEU GLY VAL GLU ASP LYS VAL THR VAL PRO SEQRES 8 B 189 LEU PHE GLU GLY VAL GLN LYS THR GLN THR ILE ARG SER SEQRES 9 B 189 ALA SER ASP ILE ARG ASP VAL PHE ILE ASN ALA GLY ILE SEQRES 10 B 189 LYS GLY GLU GLU TYR ASP ALA ALA TRP ASN SER PHE VAL SEQRES 11 B 189 VAL LYS SER LEU VAL ALA GLN GLN GLU LYS ALA ALA ALA SEQRES 12 B 189 ASP VAL GLN LEU ARG GLY VAL PRO ALA MET PHE VAL ASN SEQRES 13 B 189 GLY LYS TYR GLN LEU ASN PRO GLN GLY MET ASP THR SER SEQRES 14 B 189 ASN MET ASP VAL PHE VAL GLN GLN TYR ALA ASP THR VAL SEQRES 15 B 189 LYS TYR LEU SER GLU LYS LYS FORMUL 3 HOH *248(H2 O) HELIX 1 A1 CYS A 30 GLU A 37 1 8 HELIX 2 A1' HIS A 41 LEU A 50 1SEE REMARK 7 10 HELIX 3 A2 GLY A 66 LEU A 82 1 17 HELIX 4 A3 VAL A 84 GLN A 100 1 17 HELIX 5 A4 SER A 104 ALA A 115 1 12 HELIX 6 A5 LYS A 118 SER A 128 1 11 HELIX 7 A6 PHE A 129 GLN A 146 1 18 HELIX 8 A7 ASN A 170 LYS A 188 1 19 HELIX 9 B1 CYS B 30 GLU B 37 1 8 HELIX 10 B1' HIS B 41 LEU B 50 1SEE REMARK 7 10 HELIX 11 B2 GLY B 66 LEU B 82 1 17 HELIX 12 B3 VAL B 84 GLN B 100 1 17 HELIX 13 B4 SER B 104 ALA B 115 1 12 HELIX 14 B5 LYS B 118 SER B 128 1 11 HELIX 15 B6 PHE B 129 GLN B 146 1 18 HELIX 16 B7 ASN B 170 LYS B 188 1 19 SHEET 1 S1A 5 GLN A 8 LEU A 12 0 SHEET 2 S1A 5 LYS A 158 ASN A 162 -1 SHEET 3 S1A 5 ALA A 152 ASN A 156 -1 SHEET 4 S1A 5 GLN A 21 PHE A 28 -1 SHEET 5 S1A 5 LYS A 55 VAL A 61 1 SHEET 1 S1B 5 GLN B 8 LEU B 12 0 SHEET 2 S1B 5 LYS B 158 ASN B 162 -1 SHEET 3 S1B 5 ALA B 152 ASN B 156 -1 SHEET 4 S1B 5 GLN B 21 PHE B 28 -1 SHEET 5 S1B 5 LYS B 55 VAL B 61 1 SSBOND 1 CYS A 30 CYS A 33 1555 1555 2.03 SSBOND 2 CYS B 30 CYS B 33 1555 1555 2.02 CISPEP 1 VAL A 150 PRO A 151 0 -0.01 CISPEP 2 VAL B 150 PRO B 151 0 0.25 SITE 1 CAA 5 CYS A 30 PRO A 31 HIS A 32 CYS A 33 SITE 2 CAA 5 PRO A 151 SITE 1 CAB 5 CYS B 30 PRO B 31 HIS B 32 CYS B 33 SITE 2 CAB 5 PRO B 151 CRYST1 117.700 65.100 76.400 90.00 126.30 90.00 C 1 2 1 8 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 0.008496 0.000000 0.006241 0.00000 SCALE2 0.000000 0.015361 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016241 0.00000