HEADER VIRAL PROTEIN 26-SEP-21 7VIC TITLE THE CRYSTAL STRUCTURE OF SARS-COV-2 3C-LIKE PROTEASE IN COMPLEX WITH A TITLE 2 TRADITIONAL CHINESE MEDICINE INHIBITORS COMPND MOL_ID: 1; COMPND 2 MOLECULE: 3C-LIKE PROTEINASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: MAIN PROTEASE; COMPND 5 EC: 3.4.22.69; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS SOURCE 3 2; SOURCE 4 ORGANISM_COMMON: 2019-NCOV; SOURCE 5 ORGANISM_TAXID: 2697049; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008 KEYWDS SARS-COV-2, INHIBITOR, 3CLPRO, VIRUS, VIRAL PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR B.ZHONG,B.CHEN,H.ZHOU,L.SUN REVDAT 4 29-NOV-23 7VIC 1 REMARK REVDAT 3 20-JUL-22 7VIC 1 JRNL REVDAT 2 08-JUN-22 7VIC 1 JRNL REVDAT 1 30-MAR-22 7VIC 0 JRNL AUTH B.ZHONG,W.PENG,S.DU,B.CHEN,Y.FENG,X.HU,Q.LAI,S.LIU,Z.W.ZHOU, JRNL AUTH 2 P.FANG,Y.WU,F.GAO,H.ZHOU,L.SUN JRNL TITL ORIDONIN INHIBITS SARS-COV-2 BY TARGETING ITS 3C-LIKE JRNL TITL 2 PROTEASE. JRNL REF SMALL SCI V. 2 00124 2022 JRNL REFN ISSN 2688-4046 JRNL PMID 35600064 JRNL DOI 10.1002/SMSC.202100124 REMARK 2 REMARK 2 RESOLUTION. 2.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.8.0267 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 24.50 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 99.6 REMARK 3 NUMBER OF REFLECTIONS : 22123 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.216 REMARK 3 FREE R VALUE : 0.242 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.121 REMARK 3 FREE R VALUE TEST SET COUNT : 1133 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) : 2.10 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.15 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1549 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 BIN R VALUE (WORKING SET) : 0.2580 REMARK 3 BIN FREE R VALUE SET COUNT : 88 REMARK 3 BIN FREE R VALUE : 0.2670 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2295 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 26 REMARK 3 SOLVENT ATOMS : 103 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 31.13 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.02500 REMARK 3 B22 (A**2) : -0.00900 REMARK 3 B33 (A**2) : -0.01600 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00100 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.214 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.176 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): NULL REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.940 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.921 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2376 ; 0.002 ; 0.013 REMARK 3 BOND LENGTHS OTHERS (A): 2181 ; 0.036 ; 0.017 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 3248 ; 1.220 ; 1.641 REMARK 3 BOND ANGLES OTHERS (DEGREES): 5006 ; 2.361 ; 1.574 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 300 ; 6.781 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 114 ;32.754 ;23.333 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 363 ;14.662 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 10 ; 7.348 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 320 ; 0.048 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2729 ; 0.003 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 555 ; 0.003 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 384 ; 0.211 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 33 ; 0.134 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 1136 ; 0.158 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 94 ; 0.110 ; 0.200 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): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): NULL ; NULL ; NULL 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): 1204 ; 1.166 ; 3.310 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 1202 ; 1.165 ; 3.304 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1502 ; 2.090 ; 4.954 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): 1503 ; 2.089 ; 4.957 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1171 ; 0.975 ; 3.435 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): 1172 ; 0.974 ; 3.438 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 1746 ; 1.664 ; 5.158 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): 1747 ; 1.663 ; 5.161 REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL 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 : MASK BULK SOLVENT 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: HYDROGENS HAVE BEEN ADDED IN THEIR REMARK 3 RIDING POSITIONS REMARK 4 REMARK 4 7VIC COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 30-SEP-21. REMARK 100 THE DEPOSITION ID IS D_1300024752. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 29-APR-21 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : SEALED TUBE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : OXFORD DIFFRACTION NOVA REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5406 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : OXFORD ONYX CCD REMARK 200 INTENSITY-INTEGRATION SOFTWARE : CRYSALISPRO REMARK 200 DATA SCALING SOFTWARE : CRYSALISPRO REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 22123 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.100 REMARK 200 RESOLUTION RANGE LOW (A) : 24.499 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.7 REMARK 200 DATA REDUNDANCY : 4.400 REMARK 200 R MERGE (I) : 0.12900 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 10.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.10 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.18 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: 6LU7 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 56.80 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.85 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 100 MM MES, PH6, 12% PEG 6000, 0.5% REMARK 280 DMSO, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 289K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 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+1/2 REMARK 290 4555 -X+1/2,Y+1/2,-Z+1/2 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 21.21074 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 40.70550 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 45.34736 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 21.21074 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 40.70550 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 45.34736 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: 2650 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 24700 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -11.0 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 -1.000000 0.000000 0.000000 52.17800 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 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 GLY A 302 REMARK 465 VAL A 303 REMARK 465 THR A 304 REMARK 465 PHE A 305 REMARK 465 GLN A 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 SER A 46 OG REMARK 470 GLU A 47 CG CD OE1 OE2 REMARK 470 LEU A 50 CG CD1 CD2 REMARK 470 ARG A 76 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 100 CG CD CE NZ REMARK 470 TYR A 154 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 GLN A 189 CG CD OE1 NE2 REMARK 470 MET A 235 CG SD CE REMARK 470 LYS A 269 CE NZ 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 SG CYS A 145 C14 ODN A 401 2.01 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 -126.62 52.49 REMARK 500 ASN A 51 82.05 -155.31 REMARK 500 ASN A 84 -120.52 55.50 REMARK 500 TYR A 154 -114.83 65.17 REMARK 500 REMARK 500 REMARK: NULL DBREF 7VIC A 1 306 UNP P0DTC1 R1A_SARS2 3264 3569 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 VAL VAL TYR CYS PRO SEQRES 4 A 306 ARG HIS VAL ILE CYS THR SER GLU ASP MET LEU ASN PRO SEQRES 5 A 306 ASN TYR GLU ASP LEU LEU ILE ARG LYS SER ASN HIS ASN 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 VAL LEU LYS LEU LYS VAL SEQRES 8 A 306 ASP THR ALA 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 PHE 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 ASN 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 VAL 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 SER LEU LYS GLU LEU LEU GLN SEQRES 22 A 306 ASN GLY MET ASN GLY ARG THR ILE LEU GLY SER ALA LEU 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 ODN A 401 26 HETNAM ODN (1BETA,6BETA,7BETA,8ALPHA,9BETA,10ALPHA,13ALPHA,14R, HETNAM 2 ODN 16BETA)-1,6,7,14-TETRAHYDROXY-7,20-EPOXYKAURAN-15-ONE FORMUL 2 ODN C20 H30 O6 FORMUL 3 HOH *103(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 GLU A 47 ASN A 51 5 5 HELIX 4 AA4 ASN A 53 ARG A 60 1 8 HELIX 5 AA5 SER A 62 HIS A 64 5 3 HELIX 6 AA6 ILE A 200 ASN A 214 1 15 HELIX 7 AA7 THR A 226 TYR A 237 1 12 HELIX 8 AA8 THR A 243 LEU A 250 1 8 HELIX 9 AA9 LEU A 250 GLY A 258 1 9 HELIX 10 AB1 ALA A 260 GLY A 275 1 16 HELIX 11 AB2 THR A 292 SER A 301 1 10 SHEET 1 AA1 7 VAL A 73 LEU A 75 0 SHEET 2 AA1 7 PHE A 66 ALA A 70 -1 N ALA A 70 O VAL A 73 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 LEU A 27 N VAL A 20 SHEET 5 AA1 7 VAL A 35 PRO A 39 -1 O TYR A 37 N LEU A 30 SHEET 6 AA1 7 VAL 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 LYS A 88 SHEET 1 AA2 5 TYR A 101 PHE A 103 0 SHEET 2 AA2 5 CYS A 156 GLU A 166 1 O PHE A 159 N LYS A 102 SHEET 3 AA2 5 VAL A 148 ASP A 153 -1 N ASP A 153 O CYS A 156 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 TYR A 101 PHE A 103 0 SHEET 2 AA3 3 CYS A 156 GLU A 166 1 O PHE A 159 N LYS A 102 SHEET 3 AA3 3 HIS A 172 THR A 175 -1 O ALA A 173 N MET A 165 CRYST1 52.178 81.411 91.218 90.00 96.14 90.00 I 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 0.019165 0.000000 0.002062 0.00000 SCALE2 0.000000 0.012283 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011026 0.00000