2A5A - Header Asymmetric Unit

HEADER HYDROLASE 30-JUN-05 2A5A

TITLE CRYSTAL STRUCTURE OF UNBOUND SARS CORONAVIRUS MAIN TITLE 2 PEPTIDASE IN THE SPACE GROUP C2

COMPND MOL_ID: 1; COMPND 2 MOLECULE: 3C-LIKE PEPTIDASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: 3CL-PRO, 3CLP, NSP2; COMPND 5 EC: 3.4.22.-; COMPND 6 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SARS CORONAVIRUS; SOURCE 3 ORGANISM_TAXID: 227859; SOURCE 4 STRAIN: SARS; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: GJ1158; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PT7HSP2

KEYWDS CYSTEINE PEPTIDASE, 3C-LIKE, N-FINGER, CHYMOTRYPSIN-LIKE KEYWDS 2 FOLD, LONG LOOP, ALPHA-HELICAL DOMAIN, DIMER, CATALYTIC KEYWDS 3 DYAD, SPECIFICITY POCKETS, HYDROLASE

EXPDTA X-RAY DIFFRACTION

AUTHOR T.-W.LEE,M.M.CHERNEY,C.HUITEMA,J.LIU,K.E.JAMES,J.C.POWERS, AUTHOR 2 L.D.ELTIS,M.N.JAMES

REVDAT 3 24-FEB-09 2A5A 1 VERSN REVDAT 2 01-NOV-05 2A5A 1 JRNL REVDAT 1 25-OCT-05 2A5A 0

JRNL AUTH T.-W.LEE,M.M.CHERNEY,C.HUITEMA,J.LIU,K.E.JAMES, JRNL AUTH 2 J.C.POWERS,L.D.ELTIS,M.N.JAMES JRNL TITL CRYSTAL STRUCTURES OF THE MAIN PEPTIDASE FROM THE JRNL TITL 2 SARS CORONAVIRUS INHIBITED BY A SUBSTRATE-LIKE JRNL TITL 3 AZA-PEPTIDE EPOXIDE JRNL REF J.MOL.BIOL. V. 353 1137 2005 JRNL REFN ISSN 0022-2836 JRNL PMID 16219322 JRNL DOI 10.1016/J.JMB.2005.09.004

REMARK 1

REMARK 2 REMARK 2 RESOLUTION. 2.08 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0005 REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.08 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 40.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 95.9 REMARK 3 NUMBER OF REFLECTIONS : 24536 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) : 0.195 REMARK 3 R VALUE (WORKING SET) : 0.192 REMARK 3 FREE R VALUE : 0.246 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1296 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) : 2.08 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.13 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1734 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 91.04 REMARK 3 BIN R VALUE (WORKING SET) : 0.3020 REMARK 3 BIN FREE R VALUE SET COUNT : 74 REMARK 3 BIN FREE R VALUE : 0.2970 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2431 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 6 REMARK 3 SOLVENT ATOMS : 145 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 56.64 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -3.77000 REMARK 3 B22 (A**2) : 5.10000 REMARK 3 B33 (A**2) : 0.01000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 2.62000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.176 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.172 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.180 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 14.754 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.968 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.946 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2491 ; 0.029 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3386 ; 2.801 ; 1.950 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 311 ; 8.681 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 113 ;37.647 ;24.425 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 419 ;20.011 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 12 ;17.573 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 386 ; 0.198 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 1885 ; 0.012 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 1155 ; 0.280 ; 0.300 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 1720 ; 0.349 ; 0.500 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 217 ; 0.262 ; 0.500 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): 38 ; 0.235 ; 0.300 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 17 ; 0.371 ; 0.500 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): 1587 ; 2.250 ; 2.000 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 2506 ; 3.181 ; 3.000 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1032 ; 2.380 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 880 ; 3.227 ; 3.000 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 : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : BABINET MODEL WITH MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 2A5A COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-JUL-05. REMARK 100 THE RCSB ID CODE IS RCSB033505.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 17-NOV-04 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 8.3.1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.115879 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 210 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 26196 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.080 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 (%) : 95.8 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) : 2.08 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.15 REMARK 200 COMPLETENESS FOR SHELL (%) : 91.0 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDB ENTRY 1UK2 REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 63.40 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.36 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM ACETATE, PEG 10000, REMARK 280 ETHYLENE GLYCOL, DIMETHYL SULFOXIDE, DITHIOTHREITOL, MES, PH REMARK 280 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K

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 53.87900 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 41.07000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 53.87900 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 41.07000 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: THE PEPTIDASE IS A HOMODIMER. EACH ASYMMETRIC UNIT REMARK 300 CONTAINS ONLY ONE PROTOMER. THE OTHER PROTOMER OF THE PEPTIDASEE REMARK 300 IS GENERATED FROM THE PROTOMER IN THE ASYMMETRIC UNIT BY THE REMARK 300 OPERATION -X, Y, -Z.

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 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 0.00000

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 O THR A 45 N GLU A 47 2.14 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 TRP A 31 CB TRP A 31 CG 0.133 REMARK 500 TRP A 31 CD1 TRP A 31 NE1 0.133 REMARK 500 VAL A 36 CB VAL A 36 CG1 -0.148 REMARK 500 CYS A 44 CB CYS A 44 SG -0.120 REMARK 500 VAL A 125 CB VAL A 125 CG1 -0.149 REMARK 500 ALA A 129 CA ALA A 129 CB 0.166 REMARK 500 VAL A 148 CB VAL A 148 CG1 0.174 REMARK 500 ALA A 206 CA ALA A 206 CB 0.157 REMARK 500 GLU A 290 CG GLU A 290 CD 0.091 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 4 NE - CZ - NH1 ANGL. DEV. = -4.2 DEGREES REMARK 500 ARG A 60 NE - CZ - NH1 ANGL. DEV. = -3.3 DEGREES REMARK 500 ARG A 60 NE - CZ - NH2 ANGL. DEV. = 3.4 DEGREES REMARK 500 LEU A 86 CA - CB - CG ANGL. DEV. = 15.8 DEGREES REMARK 500 LEU A 86 CA - CB - CG ANGL. DEV. = 18.0 DEGREES REMARK 500 MET A 162 CG - SD - CE ANGL. DEV. = 10.1 DEGREES REMARK 500 ASP A 248 CB - CG - OD1 ANGL. DEV. = 7.5 DEGREES REMARK 500 ASP A 248 CB - CG - OD2 ANGL. DEV. = -5.9 DEGREES REMARK 500 ASN A 277 CA - C - N ANGL. DEV. = -14.2 DEGREES REMARK 500 ASN A 277 O - C - N ANGL. DEV. = 10.9 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 ASP A 33 -149.17 42.25 REMARK 500 ASP A 34 26.84 -67.43 REMARK 500 ALA A 46 71.18 -39.46 REMARK 500 GLU A 47 91.18 55.79 REMARK 500 ASP A 48 33.35 -152.02 REMARK 500 ASN A 51 64.23 -162.45 REMARK 500 HIS A 64 -8.54 -56.97 REMARK 500 ASN A 72 48.92 -99.10 REMARK 500 ASN A 84 -119.53 34.47 REMARK 500 SER A 147 133.80 -37.40 REMARK 500 TYR A 154 -116.80 61.73 REMARK 500 HIS A 164 -50.12 -125.07 REMARK 500 MET A 276 56.78 -97.08 REMARK 500 ASN A 277 93.15 -64.40 REMARK 500 ILE A 286 133.82 105.68 REMARK 500 REMARK 500 REMARK: NULL

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 A 351 DISTANCE = 6.58 ANGSTROMS REMARK 525 HOH A 440 DISTANCE = 12.31 ANGSTROMS REMARK 525 HOH A 441 DISTANCE = 12.67 ANGSTROMS REMARK 525 HOH A 443 DISTANCE = 5.24 ANGSTROMS REMARK 525 HOH A 445 DISTANCE = 5.69 ANGSTROMS REMARK 525 HOH A 446 DISTANCE = 13.69 ANGSTROMS REMARK 525 HOH A 450 DISTANCE = 8.53 ANGSTROMS REMARK 525 HOH A 451 DISTANCE = 7.90 ANGSTROMS

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 307 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 308 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE EDO A 309

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2A5K RELATED DB: PDB REMARK 900 RELATED ID: 2A5I RELATED DB: PDB

DBREF 2A5A A 1 306 UNP P59641 R1AB_CVHSA 3241 3546

SEQRES 1 A 306 SER GLY PHE ARG LYS MET ALA PHE PRO SER GLY LYS VAL SEQRES 2 A 306 GLU GLY CYS MET VAL GLN VAL THR CYS GLY THR THR THR SEQRES 3 A 306 LEU ASN GLY LEU TRP LEU ASP ASP THR VAL TYR CYS PRO SEQRES 4 A 306 ARG HIS VAL ILE CYS THR ALA GLU ASP MET LEU ASN PRO SEQRES 5 A 306 ASN TYR GLU ASP LEU LEU ILE ARG LYS SER ASN HIS SER SEQRES 6 A 306 PHE LEU VAL GLN ALA GLY ASN VAL GLN LEU ARG VAL ILE SEQRES 7 A 306 GLY HIS SER MET GLN ASN CYS LEU LEU ARG LEU LYS VAL SEQRES 8 A 306 ASP THR SER ASN PRO LYS THR PRO LYS TYR LYS PHE VAL SEQRES 9 A 306 ARG ILE GLN PRO GLY GLN THR PHE SER VAL LEU ALA CYS SEQRES 10 A 306 TYR ASN GLY SER PRO SER GLY VAL TYR GLN CYS ALA MET SEQRES 11 A 306 ARG PRO ASN HIS THR ILE LYS GLY SER PHE LEU ASN GLY SEQRES 12 A 306 SER CYS GLY SER VAL GLY PHE ASN ILE ASP TYR ASP CYS SEQRES 13 A 306 VAL SER PHE CYS TYR MET HIS HIS MET GLU LEU PRO THR SEQRES 14 A 306 GLY VAL HIS ALA GLY THR ASP LEU GLU GLY LYS PHE TYR SEQRES 15 A 306 GLY PRO PHE VAL ASP ARG GLN THR ALA GLN ALA ALA GLY SEQRES 16 A 306 THR ASP THR THR ILE THR LEU ASN VAL LEU ALA TRP LEU SEQRES 17 A 306 TYR ALA ALA VAL ILE ASN GLY ASP ARG TRP PHE LEU ASN SEQRES 18 A 306 ARG PHE THR THR THR LEU ASN ASP PHE ASN LEU VAL ALA SEQRES 19 A 306 MET LYS TYR ASN TYR GLU PRO LEU THR GLN ASP HIS VAL SEQRES 20 A 306 ASP ILE LEU GLY PRO LEU SER ALA GLN THR GLY ILE ALA SEQRES 21 A 306 VAL LEU ASP MET CYS ALA ALA LEU LYS GLU LEU LEU GLN SEQRES 22 A 306 ASN GLY MET ASN GLY ARG THR ILE LEU GLY SER THR ILE SEQRES 23 A 306 LEU GLU ASP GLU PHE THR PRO PHE ASP VAL VAL ARG GLN SEQRES 24 A 306 CYS SER GLY VAL THR PHE GLN

HET CL A 307 1 HET CL A 308 1 HET EDO A 309 4

HETNAM CL CHLORIDE ION HETNAM EDO 1,2-ETHANEDIOL

HETSYN EDO ETHYLENE GLYCOL

FORMUL 2 CL 2(CL 1-) FORMUL 4 EDO C2 H6 O2 FORMUL 5 HOH *145(H2 O)

HELIX 1 1 SER A 10 GLY A 15 1 6 HELIX 2 2 HIS A 41 CYS A 44 5 4 HELIX 3 3 ASN A 53 ARG A 60 1 8 HELIX 4 4 SER A 62 HIS A 64 5 3 HELIX 5 5 ILE A 200 GLY A 215 1 16 HELIX 6 6 THR A 226 TYR A 237 1 12 HELIX 7 7 THR A 243 LEU A 250 1 8 HELIX 8 8 LEU A 250 GLY A 258 1 9 HELIX 9 9 ALA A 260 ASN A 274 1 15 HELIX 10 10 THR A 292 CYS A 300 1 9

SHEET 1 A 7 VAL A 73 LEU A 75 0 SHEET 2 A 7 PHE A 66 ALA A 70 -1 N VAL A 68 O LEU A 75 SHEET 3 A 7 MET A 17 CYS A 22 -1 N GLN A 19 O GLN A 69 SHEET 4 A 7 THR A 25 LEU A 32 -1 O LEU A 27 N VAL A 20 SHEET 5 A 7 THR A 35 PRO A 39 -1 O TYR A 37 N LEU A 30 SHEET 6 A 7 LEU A 86 VAL A 91 -1 O LEU A 87 N CYS A 38 SHEET 7 A 7 VAL A 77 GLN A 83 -1 N GLN A 83 O LEU A 86 SHEET 1 B 5 TYR A 101 PHE A 103 0 SHEET 2 B 5 CYS A 156 GLU A 166 1 O PHE A 159 N LYS A 102 SHEET 3 B 5 VAL A 148 ASP A 153 -1 N ASP A 153 O CYS A 156 SHEET 4 B 5 THR A 111 TYR A 118 -1 N SER A 113 O PHE A 150 SHEET 5 B 5 SER A 121 ALA A 129 -1 O TYR A 126 N VAL A 114 SHEET 1 C 3 TYR A 101 PHE A 103 0 SHEET 2 C 3 CYS A 156 GLU A 166 1 O PHE A 159 N LYS A 102 SHEET 3 C 3 HIS A 172 THR A 175 -1 O ALA A 173 N MET A 165

SITE 1 AC1 1 HIS A 163 SITE 1 AC2 1 HOH A 410 SITE 1 AC3 4 LYS A 5 TYR A 126 GLN A 127 HOH A 420

CRYST1 107.758 82.140 53.128 90.00 104.87 90.00 C 1 2 1 4

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 0.009280 0.000000 0.002464 0.00000

SCALE2 0.000000 0.012174 0.000000 0.00000

SCALE3 0.000000 0.000000 0.019475 0.00000