HEADER SERINE PROTEASE 16-JUL-96 1LAY TITLE CRYSTAL STRUCTURE OF CYTOMEGALOVIRUS PROTEASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYTOMEGALOVIRUS PROTEASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: ASSEMBLIN; COMPND 5 EC: 3.4.21.-; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CYTOMEGALOVIRUS; SOURCE 3 ORGANISM_TAXID: 10358; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS VIRAL PROTEASE, SERINE PROTEASE, CYTOMEGALOVIRUS EXPDTA X-RAY DIFFRACTION AUTHOR X.QIU,J.S.CULP,A.G.DILELLA,B.HELLMIG,S.S.HOOG,C.A.JASON,W.W.SMITH, AUTHOR 2 S.S.ABDEL-MEGUID REVDAT 5 14-FEB-24 1LAY 1 SEQADV REVDAT 4 13-JUL-11 1LAY 1 VERSN REVDAT 3 24-FEB-09 1LAY 1 VERSN REVDAT 2 01-APR-03 1LAY 1 JRNL REVDAT 1 26-SEP-97 1LAY 0 JRNL AUTH X.QIU,J.S.CULP,A.G.DILELLA,B.HELLMIG,S.S.HOOG,C.A.JANSON, JRNL AUTH 2 W.W.SMITH,S.S.ABDEL-MEGUID JRNL TITL UNIQUE FOLD AND ACTIVE SITE IN CYTOMEGALOVIRUS PROTEASE. JRNL REF NATURE V. 383 275 1996 JRNL REFN ISSN 0028-0836 JRNL PMID 8805707 JRNL DOI 10.1038/383275A0 REMARK 2 REMARK 2 RESOLUTION. 2.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 7.00 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) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 7193 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 SET) : 0.185 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 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) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL 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 : 1504 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 73 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 4.00 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) : 0.30 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.016 REMARK 3 BOND ANGLES (DEGREES) : 2.200 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL 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 ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; 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: NULL REMARK 4 REMARK 4 1LAY 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_1000174639. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-FEB-96 REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : CHESS REMARK 200 BEAMLINE : A1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.92 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 7644 REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 90.0 REMARK 200 DATA REDUNDANCY : 3.000 REMARK 200 R MERGE (I) : 0.06000 REMARK 200 R SYM (I) : NULL REMARK 200 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 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 40.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.01 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -Y,X,Z+3/4 REMARK 290 4555 Y,-X,Z+1/4 REMARK 290 5555 -X,Y,-Z REMARK 290 6555 X,-Y,-Z+1/2 REMARK 290 7555 Y,X,-Z+1/4 REMARK 290 8555 -Y,-X,-Z+3/4 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 65.50000 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 98.25000 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 32.75000 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 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 65.50000 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 32.75000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 98.25000 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 2650 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 16720 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -17.0 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 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 32.75000 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 MET A 1 REMARK 465 THR A 2 REMARK 465 MET A 3 REMARK 465 ASP A 4 REMARK 465 GLU A 5 REMARK 465 GLN A 6 REMARK 465 GLN A 7 REMARK 465 SER A 8 REMARK 465 GLN A 25 REMARK 465 SER A 26 REMARK 465 PRO A 27 REMARK 465 ASP A 28 REMARK 465 GLU A 29 REMARK 465 ALA A 30 REMARK 465 GLU A 31 REMARK 465 LEU A 32 REMARK 465 LEU A 33 REMARK 465 LEU A 34 REMARK 465 PRO A 35 REMARK 465 ARG A 36 REMARK 465 ASP A 37 REMARK 465 VAL A 38 REMARK 465 VAL A 39 REMARK 465 GLU A 40 REMARK 465 HIS A 41 REMARK 465 TRP A 42 REMARK 465 LEU A 43 REMARK 465 HIS A 44 REMARK 465 ALA A 45 REMARK 465 GLN A 46 REMARK 465 GLY A 47 REMARK 465 GLN A 48 REMARK 465 GLY A 49 REMARK 465 GLN A 50 REMARK 465 PRO A 51 REMARK 465 SER A 52 REMARK 465 LEU A 53 REMARK 465 SER A 54 REMARK 465 VAL A 55 REMARK 465 VAL A 143 REMARK 465 ALA A 144 REMARK 465 THR A 145 REMARK 465 SER A 146 REMARK 465 LEU A 147 REMARK 465 SER A 148 REMARK 465 GLY A 149 REMARK 465 SER A 150 REMARK 465 GLU A 151 REMARK 465 THR A 152 REMARK 465 THR A 153 REMARK 465 THR A 205 REMARK 465 ALA A 206 REMARK 465 VAL A 207 REMARK 465 ASP A 208 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 GLN A 9 CG CD OE1 NE2 REMARK 470 ARG A 79 CD NE CZ NH1 NH2 REMARK 470 ARG A 136 CD NE CZ NH1 NH2 REMARK 470 ARG A 137 CG CD NE CZ NH1 NH2 REMARK 470 ASP A 140 CG OD1 OD2 REMARK 470 GLU A 142 CG CD OE1 OE2 REMARK 470 PRO A 154 CG CD REMARK 470 PHE A 155 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ARG A 165 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 167 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 201 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 232 CB CG CD NE CZ NH1 NH2 REMARK 470 GLU A 233 CB CG CD OE1 OE2 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 ASP A 24 N - CA - C ANGL. DEV. = 18.0 DEGREES REMARK 500 PRO A 111 C - N - CA ANGL. DEV. = 9.3 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 LEU A 57 138.16 -39.07 REMARK 500 HIS A 63 -3.77 67.54 REMARK 500 ALA A 67 48.63 -97.06 REMARK 500 SER A 113 -74.79 -140.54 REMARK 500 TYR A 128 69.97 -105.94 REMARK 500 PHE A 155 -81.44 -141.46 REMARK 500 HIS A 157 179.80 177.30 REMARK 500 THR A 169 46.47 -90.71 REMARK 500 SER A 216 -155.69 -94.07 REMARK 500 ARG A 234 -70.20 -76.66 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: CATALYTIC TRIAD. DBREF 1LAY A 1 256 UNP P16753 VP40_HCMVA 1 256 SEQADV 1LAY VAL A 143 UNP P16753 ALA 143 CONFLICT SEQRES 1 A 256 MET THR MET ASP GLU GLN GLN SER GLN ALA VAL ALA PRO SEQRES 2 A 256 VAL TYR VAL GLY GLY PHE LEU ALA ARG TYR ASP GLN SER SEQRES 3 A 256 PRO ASP GLU ALA GLU LEU LEU LEU PRO ARG ASP VAL VAL SEQRES 4 A 256 GLU HIS TRP LEU HIS ALA GLN GLY GLN GLY GLN PRO SER SEQRES 5 A 256 LEU SER VAL ALA LEU PRO LEU ASN ILE ASN HIS ASP ASP SEQRES 6 A 256 THR ALA VAL VAL GLY HIS VAL ALA ALA MET GLN SER VAL SEQRES 7 A 256 ARG ASP GLY LEU PHE CYS LEU GLY CYS VAL THR SER PRO SEQRES 8 A 256 ARG PHE LEU GLU ILE VAL ARG ARG ALA SER GLU LYS SER SEQRES 9 A 256 GLU LEU VAL SER ARG GLY PRO VAL SER PRO LEU GLN PRO SEQRES 10 A 256 ASP LYS VAL VAL GLU PHE LEU SER GLY SER TYR ALA GLY SEQRES 11 A 256 LEU SER LEU SER SER ARG ARG CYS ASP ASP VAL GLU VAL SEQRES 12 A 256 ALA THR SER LEU SER GLY SER GLU THR THR PRO PHE LYS SEQRES 13 A 256 HIS VAL ALA LEU CYS SER VAL GLY ARG ARG ARG GLY THR SEQRES 14 A 256 LEU ALA VAL TYR GLY ARG ASP PRO GLU TRP VAL THR GLN SEQRES 15 A 256 ARG PHE PRO ASP LEU THR ALA ALA ASP ARG ASP GLY LEU SEQRES 16 A 256 ARG ALA GLN TRP GLN ARG CYS GLY SER THR ALA VAL ASP SEQRES 17 A 256 ALA SER GLY ASP PRO PHE ARG SER ASP SER TYR GLY LEU SEQRES 18 A 256 LEU GLY ASN SER VAL ASP ALA LEU TYR ILE ARG GLU ARG SEQRES 19 A 256 LEU PRO LYS LEU ARG TYR ASP LYS GLN LEU VAL GLY VAL SEQRES 20 A 256 THR GLU ARG GLU SER TYR VAL LYS ALA FORMUL 2 HOH *73(H2 O) HELIX 1 A1 PRO A 91 SER A 101 1 11 HELIX 2 A2 GLU A 105 GLY A 110 1 6 HELIX 3 3 LYS A 119 SER A 127 1 9 HELIX 4 4 PRO A 177 ARG A 183 1 7 HELIX 5 5 ALA A 189 TRP A 199 1 11 HELIX 6 6 SER A 218 ALA A 228 1 11 HELIX 7 7 ARG A 234 VAL A 245 1 12 SHEET 1 COR 8 PRO A 13 LEU A 20 0 SHEET 2 COR 8 GLY A 81 VAL A 88 -1 N GLY A 86 O VAL A 16 SHEET 3 COR 8 ALA A 67 VAL A 78 -1 N ALA A 74 O LEU A 85 SHEET 4 COR 8 PRO A 58 ILE A 61 -1 O LEU A 59 N VAL A 69 SHEET 5 COR 8 LYS A 156 SER A 162 1 O VAL A 158 N ASN A 60 SHEET 6 COR 8 GLY A 130 SER A 135 -1 O SER A 132 N ALA A 159 SHEET 7 COR 8 THR A 169 ARG A 175 -1 O THR A 169 N LEU A 131 SHEET 8 COR 8 PRO A 13 LEU A 20 -1 N GLY A 17 O VAL A 172 SITE 1 CAT 3 SER A 132 HIS A 63 HIS A 157 CRYST1 58.700 58.700 131.000 90.00 90.00 90.00 P 43 2 2 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 0.017036 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017036 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007634 0.00000