HEADER VIRAL PROTEIN 19-MAR-22 7XAX TITLE CRYSTAL STRUCTURE OF SARS CORONAVIRUS MAIN PROTEASE IN COMPLEX WITH TITLE 2 BAICALEI COMPND MOL_ID: 1; COMPND 2 MOLECULE: 3C-LIKE PROTEINASE NSP5; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: 3CL-PRO,3CLP,MAIN PROTEASE,MPRO,NON-STRUCTURAL PROTEIN 5, COMPND 5 NSP5,SARS CORONAVIRUS MAIN PROTEINASE; COMPND 6 EC: 3.4.22.69; COMPND 7 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS SOURCE 3 2; SOURCE 4 ORGANISM_TAXID: 694009; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3) KEYWDS SARS, VIRAL PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR X.L.ZHOU,J.LI,J.ZHANG REVDAT 3 02-OCT-24 7XAX 1 JRNL REVDAT 2 29-NOV-23 7XAX 1 REMARK REVDAT 1 22-MAR-23 7XAX 0 JRNL AUTH J.FENG,D.LI,J.ZHANG,X.YIN,J.LI JRNL TITL CRYSTAL STRUCTURE OF SARS-COV 3C-LIKE PROTEASE WITH JRNL TITL 2 BAICALEIN. JRNL REF BIOCHEM.BIOPHYS.RES.COMMUN. V. 611 190 2022 JRNL REFN ESSN 1090-2104 JRNL PMID 35490659 JRNL DOI 10.1016/J.BBRC.2022.04.086 REMARK 2 REMARK 2 RESOLUTION. 2.25 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.12_2829 REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : GEOSTD + MONOMER LIBRARY + CDL V1.2 REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.25 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 23.29 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.962 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.5 REMARK 3 NUMBER OF REFLECTIONS : 37838 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.232 REMARK 3 R VALUE (WORKING SET) : 0.229 REMARK 3 FREE R VALUE : 0.280 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.272 REMARK 3 FREE R VALUE TEST SET COUNT : 1995 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 23.2924 - 5.4019 0.97 2554 142 0.1920 0.2306 REMARK 3 2 5.4019 - 4.2964 0.98 2564 143 0.1730 0.2380 REMARK 3 3 4.2964 - 3.7559 0.98 2573 143 0.1958 0.2141 REMARK 3 4 3.7559 - 3.4137 0.98 2564 143 0.2114 0.2723 REMARK 3 5 3.4137 - 3.1696 0.99 2618 145 0.2362 0.2832 REMARK 3 6 3.1696 - 2.9832 0.98 2556 143 0.2518 0.3142 REMARK 3 7 2.9832 - 2.8340 0.98 2582 144 0.2551 0.3136 REMARK 3 8 2.8340 - 2.7108 0.98 2560 142 0.2663 0.2942 REMARK 3 9 2.7108 - 2.6066 0.98 2559 143 0.2795 0.3552 REMARK 3 10 2.6066 - 2.5168 0.97 2519 140 0.3204 0.3767 REMARK 3 11 2.5168 - 2.4382 0.96 2553 142 0.3550 0.4407 REMARK 3 12 2.4382 - 2.3686 0.97 2586 145 0.2925 0.3525 REMARK 3 13 2.3686 - 2.3063 0.97 2541 141 0.2875 0.3635 REMARK 3 14 2.3063 - 2.2500 0.96 2514 139 0.2955 0.3391 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.344 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 32.500 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 37.56 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 45.62 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.008 4443 REMARK 3 ANGLE : 0.937 6072 REMARK 3 CHIRALITY : 0.051 703 REMARK 3 PLANARITY : 0.006 791 REMARK 3 DIHEDRAL : 3.788 2576 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 7XAX COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 24-MAR-22. REMARK 100 THE DEPOSITION ID IS D_1300028459. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 16-NOV-20 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRF REMARK 200 BEAMLINE : BL02U1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97918 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315R REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : XDS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 37931 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.250 REMARK 200 RESOLUTION RANGE LOW (A) : 66.310 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.7 REMARK 200 DATA REDUNDANCY : 3.400 REMARK 200 R MERGE (I) : 0.07100 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 11.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.25 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.31 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.66200 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 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: PHENIX REMARK 200 STARTING MODEL: 7DQZ REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 61.11 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.16 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M HEPES PH7.5, 10% PEG8000, 8% REMARK 280 ETHYLENE GLYCOL, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,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 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 REMARK 350 TOTAL BURIED SURFACE AREA: 1930 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 24360 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -9.0 KCAL/MOL 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 SER A 1 REMARK 465 CYS A 300 REMARK 465 SER A 301 REMARK 465 GLY A 302 REMARK 465 VAL A 303 REMARK 465 THR A 304 REMARK 465 PHE A 305 REMARK 465 GLN A 306 REMARK 465 SER B 1 REMARK 465 ASN B 277 REMARK 465 GLY B 278 REMARK 465 CYS B 300 REMARK 465 SER B 301 REMARK 465 GLY B 302 REMARK 465 VAL B 303 REMARK 465 THR B 304 REMARK 465 PHE B 305 REMARK 465 GLN B 306 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 MET A 49 CG SD CE REMARK 470 SER A 62 OG REMARK 470 HIS A 64 CG ND1 CD2 CE1 NE2 REMARK 470 LEU A 67 CG CD1 CD2 REMARK 470 ASN A 72 CG OD1 ND2 REMARK 470 VAL A 73 CG1 CG2 REMARK 470 GLN A 74 CG CD OE1 NE2 REMARK 470 ARG A 76 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 100 CG CD CE NZ REMARK 470 GLN A 110 CG CD OE1 NE2 REMARK 470 LYS A 137 CG CD CE NZ REMARK 470 ASN A 142 CG OD1 ND2 REMARK 470 TYR A 154 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 ASP A 155 CG OD1 OD2 REMARK 470 GLU A 166 CG CD OE1 OE2 REMARK 470 ARG A 188 CG CD NE CZ NH1 NH2 REMARK 470 GLN A 189 CG CD OE1 NE2 REMARK 470 ILE A 213 CG1 CG2 CD1 REMARK 470 ARG A 222 CG CD NE CZ NH1 NH2 REMARK 470 THR A 226 OG1 CG2 REMARK 470 LEU A 227 CG CD1 CD2 REMARK 470 ASN A 228 CG OD1 ND2 REMARK 470 ASP A 229 CG OD1 OD2 REMARK 470 VAL A 233 CG1 CG2 REMARK 470 MET A 235 CG SD CE REMARK 470 LYS A 236 CG CD CE NZ REMARK 470 LEU A 242 CG CD1 CD2 REMARK 470 THR A 243 OG1 CG2 REMARK 470 GLN A 244 CG CD OE1 NE2 REMARK 470 ASP A 245 CG OD1 OD2 REMARK 470 ILE A 249 CG1 CG2 CD1 REMARK 470 SER A 254 OG REMARK 470 THR A 257 OG1 CG2 REMARK 470 LEU A 262 CG CD1 CD2 REMARK 470 LYS A 269 CG CD CE NZ REMARK 470 GLU A 270 CG CD OE1 OE2 REMARK 470 ASN A 277 CG OD1 ND2 REMARK 470 ARG A 279 CG CD NE CZ NH1 NH2 REMARK 470 PHE A 294 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ARG A 298 CG CD NE CZ NH1 NH2 REMARK 470 GLU B 47 CG CD OE1 OE2 REMARK 470 ASP B 48 CG OD1 OD2 REMARK 470 MET B 49 CG SD CE REMARK 470 LEU B 50 CG CD1 CD2 REMARK 470 ASN B 51 CG OD1 ND2 REMARK 470 LEU B 57 CG CD1 CD2 REMARK 470 HIS B 64 CG ND1 CD2 CE1 NE2 REMARK 470 LEU B 67 CG CD1 CD2 REMARK 470 ASN B 72 CG OD1 ND2 REMARK 470 LEU B 75 CG CD1 CD2 REMARK 470 ARG B 76 CG CD NE CZ NH1 NH2 REMARK 470 VAL B 77 CG1 CG2 REMARK 470 ILE B 78 CG1 CG2 CD1 REMARK 470 LYS B 90 CG CD CE NZ REMARK 470 VAL B 91 CG1 CG2 REMARK 470 THR B 98 OG1 CG2 REMARK 470 LYS B 100 CG CD CE NZ REMARK 470 LYS B 137 CG CD CE NZ REMARK 470 LEU B 141 CG CD1 CD2 REMARK 470 ASN B 142 CG OD1 ND2 REMARK 470 ASP B 153 CG OD1 OD2 REMARK 470 TYR B 154 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 ASP B 155 CG OD1 OD2 REMARK 470 GLU B 166 CG CD OE1 OE2 REMARK 470 LYS B 180 CG CD CE NZ REMARK 470 ARG B 188 CG CD NE CZ NH1 NH2 REMARK 470 GLN B 189 CG CD OE1 NE2 REMARK 470 THR B 190 OG1 CG2 REMARK 470 ARG B 222 CG CD NE CZ NH1 NH2 REMARK 470 PHE B 223 CG CD1 CD2 CE1 CE2 CZ REMARK 470 LYS B 236 CG CD CE NZ REMARK 470 GLN B 244 CG CD OE1 NE2 REMARK 470 ILE B 259 CG1 CG2 CD1 REMARK 470 MET B 276 CG SD CE REMARK 470 ARG B 279 CG CD NE CZ NH1 NH2 REMARK 470 PHE B 294 CG CD1 CD2 CE1 CE2 CZ REMARK 470 ARG B 298 CG CD NE CZ NH1 NH2 REMARK 470 GLN B 299 CG CD OE1 NE2 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 CA GLY A 143 O3 3WL A 401 1.95 REMARK 500 O GLN A 127 NH2 ARG B 4 1.97 REMARK 500 O HOH A 527 O HOH A 541 2.17 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 131 NE - CZ - NH2 ANGL. DEV. = -3.4 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 -125.42 49.71 REMARK 500 HIS A 41 5.27 -65.96 REMARK 500 THR A 45 -135.04 54.31 REMARK 500 MET A 49 85.14 -67.45 REMARK 500 LEU A 50 2.69 44.58 REMARK 500 ASN A 84 -121.51 55.11 REMARK 500 TYR A 154 -123.64 70.03 REMARK 500 GLN A 189 47.54 -80.59 REMARK 500 THR B 24 34.44 -96.36 REMARK 500 ASP B 33 -131.13 51.41 REMARK 500 ASP B 48 22.45 -70.63 REMARK 500 HIS B 64 3.95 -62.05 REMARK 500 ASN B 84 -114.48 52.50 REMARK 500 TYR B 154 -126.66 65.93 REMARK 500 ARG B 217 25.57 -146.10 REMARK 500 ARG B 298 86.54 -63.08 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 ILE A 43 CYS A 44 -144.28 REMARK 500 REMARK 500 REMARK: NULL DBREF 7XAX A 1 306 UNP P0C6U8 R1A_SARS 3241 3546 DBREF 7XAX B 1 306 UNP P0C6U8 R1A_SARS 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 SEQRES 1 B 306 SER GLY PHE ARG LYS MET ALA PHE PRO SER GLY LYS VAL SEQRES 2 B 306 GLU GLY CYS MET VAL GLN VAL THR CYS GLY THR THR THR SEQRES 3 B 306 LEU ASN GLY LEU TRP LEU ASP ASP THR VAL TYR CYS PRO SEQRES 4 B 306 ARG HIS VAL ILE CYS THR ALA GLU ASP MET LEU ASN PRO SEQRES 5 B 306 ASN TYR GLU ASP LEU LEU ILE ARG LYS SER ASN HIS SER SEQRES 6 B 306 PHE LEU VAL GLN ALA GLY ASN VAL GLN LEU ARG VAL ILE SEQRES 7 B 306 GLY HIS SER MET GLN ASN CYS LEU LEU ARG LEU LYS VAL SEQRES 8 B 306 ASP THR SER ASN PRO LYS THR PRO LYS TYR LYS PHE VAL SEQRES 9 B 306 ARG ILE GLN PRO GLY GLN THR PHE SER VAL LEU ALA CYS SEQRES 10 B 306 TYR ASN GLY SER PRO SER GLY VAL TYR GLN CYS ALA MET SEQRES 11 B 306 ARG PRO ASN HIS THR ILE LYS GLY SER PHE LEU ASN GLY SEQRES 12 B 306 SER CYS GLY SER VAL GLY PHE ASN ILE ASP TYR ASP CYS SEQRES 13 B 306 VAL SER PHE CYS TYR MET HIS HIS MET GLU LEU PRO THR SEQRES 14 B 306 GLY VAL HIS ALA GLY THR ASP LEU GLU GLY LYS PHE TYR SEQRES 15 B 306 GLY PRO PHE VAL ASP ARG GLN THR ALA GLN ALA ALA GLY SEQRES 16 B 306 THR ASP THR THR ILE THR LEU ASN VAL LEU ALA TRP LEU SEQRES 17 B 306 TYR ALA ALA VAL ILE ASN GLY ASP ARG TRP PHE LEU ASN SEQRES 18 B 306 ARG PHE THR THR THR LEU ASN ASP PHE ASN LEU VAL ALA SEQRES 19 B 306 MET LYS TYR ASN TYR GLU PRO LEU THR GLN ASP HIS VAL SEQRES 20 B 306 ASP ILE LEU GLY PRO LEU SER ALA GLN THR GLY ILE ALA SEQRES 21 B 306 VAL LEU ASP MET CYS ALA ALA LEU LYS GLU LEU LEU GLN SEQRES 22 B 306 ASN GLY MET ASN GLY ARG THR ILE LEU GLY SER THR ILE SEQRES 23 B 306 LEU GLU ASP GLU PHE THR PRO PHE ASP VAL VAL ARG GLN SEQRES 24 B 306 CYS SER GLY VAL THR PHE GLN HET 3WL A 401 20 HETNAM 3WL 5,6,7-TRIHYDROXY-2-PHENYL-4H-CHROMEN-4-ONE HETSYN 3WL BAICALEIN FORMUL 3 3WL C15 H10 O5 FORMUL 4 HOH *91(H2 O) HELIX 1 AA1 SER A 10 GLY A 15 1 6 HELIX 2 AA2 HIS A 41 CYS A 44 5 4 HELIX 3 AA3 ASN A 53 ARG A 60 1 8 HELIX 4 AA4 SER A 62 HIS A 64 5 3 HELIX 5 AA5 ILE A 200 ASN A 214 1 15 HELIX 6 AA6 THR A 226 TYR A 237 1 12 HELIX 7 AA7 THR A 243 GLY A 258 1 16 HELIX 8 AA8 ALA A 260 GLY A 275 1 16 HELIX 9 AA9 THR A 292 GLN A 299 1 8 HELIX 10 AB1 SER B 10 GLY B 15 1 6 HELIX 11 AB2 HIS B 41 CYS B 44 5 4 HELIX 12 AB3 ALA B 46 LEU B 50 5 5 HELIX 13 AB4 ASN B 53 ARG B 60 1 8 HELIX 14 AB5 SER B 62 PHE B 66 5 5 HELIX 15 AB6 ILE B 200 ASN B 214 1 15 HELIX 16 AB7 THR B 226 TYR B 237 1 12 HELIX 17 AB8 THR B 243 LEU B 250 1 8 HELIX 18 AB9 LEU B 250 GLY B 258 1 9 HELIX 19 AC1 ALA B 260 GLY B 275 1 16 HELIX 20 AC2 THR B 292 ARG B 298 1 7 SHEET 1 AA1 7 VAL A 73 LEU A 75 0 SHEET 2 AA1 7 PHE A 66 ALA A 70 -1 N VAL A 68 O LEU A 75 SHEET 3 AA1 7 MET A 17 CYS A 22 -1 N THR A 21 O LEU A 67 SHEET 4 AA1 7 THR A 25 LEU A 32 -1 O GLY A 29 N VAL A 18 SHEET 5 AA1 7 THR A 35 PRO A 39 -1 O TYR A 37 N LEU A 30 SHEET 6 AA1 7 LEU A 86 VAL A 91 -1 O LEU A 89 N VAL A 36 SHEET 7 AA1 7 VAL A 77 GLN A 83 -1 N SER A 81 O ARG A 88 SHEET 1 AA2 5 LYS A 100 PHE A 103 0 SHEET 2 AA2 5 CYS A 156 GLU A 166 1 O VAL A 157 N LYS A 100 SHEET 3 AA2 5 VAL A 148 ASP A 153 -1 N ASN A 151 O SER A 158 SHEET 4 AA2 5 THR A 111 TYR A 118 -1 N SER A 113 O PHE A 150 SHEET 5 AA2 5 SER A 121 ALA A 129 -1 O TYR A 126 N VAL A 114 SHEET 1 AA3 3 LYS A 100 PHE A 103 0 SHEET 2 AA3 3 CYS A 156 GLU A 166 1 O VAL A 157 N LYS A 100 SHEET 3 AA3 3 HIS A 172 THR A 175 -1 O THR A 175 N MET A 162 SHEET 1 AA4 7 VAL B 73 LEU B 75 0 SHEET 2 AA4 7 LEU B 67 ALA B 70 -1 N VAL B 68 O LEU B 75 SHEET 3 AA4 7 MET B 17 CYS B 22 -1 N GLN B 19 O GLN B 69 SHEET 4 AA4 7 THR B 25 LEU B 32 -1 O GLY B 29 N VAL B 18 SHEET 5 AA4 7 THR B 35 PRO B 39 -1 O TYR B 37 N LEU B 30 SHEET 6 AA4 7 LEU B 86 VAL B 91 -1 O LEU B 89 N VAL B 36 SHEET 7 AA4 7 VAL B 77 GLN B 83 -1 N GLN B 83 O LEU B 86 SHEET 1 AA5 5 LYS B 100 PHE B 103 0 SHEET 2 AA5 5 CYS B 156 GLU B 166 1 O PHE B 159 N LYS B 102 SHEET 3 AA5 5 VAL B 148 ASP B 153 -1 N ASN B 151 O SER B 158 SHEET 4 AA5 5 THR B 111 TYR B 118 -1 N SER B 113 O PHE B 150 SHEET 5 AA5 5 SER B 121 ALA B 129 -1 O TYR B 126 N VAL B 114 SHEET 1 AA6 3 LYS B 100 PHE B 103 0 SHEET 2 AA6 3 CYS B 156 GLU B 166 1 O PHE B 159 N LYS B 102 SHEET 3 AA6 3 HIS B 172 THR B 175 -1 O ALA B 173 N MET B 165 LINK N GLY A 143 O3 3WL A 401 1555 1555 1.31 CRYST1 55.510 60.550 68.280 90.95 102.72 108.65 P 1 2 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 0.018015 0.006080 0.004658 0.00000 SCALE2 0.000000 0.017430 0.001648 0.00000 SCALE3 0.000000 0.000000 0.015081 0.00000