HEADER ANTIVIRAL PROTEIN 30-AUG-24 9DFU TITLE X-RAY CRYSTAL STRUCTURE OF THE SECOND VIPERIN-LIKE ENZYME FROM T. TITLE 2 VIRENS VARIANT F40H WITH BOUND CTP AND SAM COMPND MOL_ID: 1; COMPND 2 MOLECULE: RADICAL SAM CORE DOMAIN-CONTAINING PROTEIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: TRICHODERMA VIRENS; SOURCE 3 ORGANISM_TAXID: 413071; SOURCE 4 STRAIN: GV29-8; SOURCE 5 GENE: TRIVIDRAFT_46896; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008 KEYWDS VIPERIN-LIKE ENZYME, CTP, SAM, 4FE-4S CLUSTER, DDHCTP, ANTIVIRAL KEYWDS 2 PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR J.C.LACHOWICZ,J.B.BONANNO,T.L.GROVE REVDAT 1 19-FEB-25 9DFU 0 JRNL AUTH J.C.LACHOWICZ,S.GRUDMAN,J.B.BONANNO,A.FISER,T.L.GROVE JRNL TITL STRUCTURAL INSIGHTS FROM ACTIVE SITE VARIANTS AND B-8 LOOP JRNL TITL 2 INTERACTIONS IN VIPERIN-LIKE ENZYMES JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 2.30 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (1.20.1_4487: ???) 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 : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 19.66 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.340 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.6 REMARK 3 NUMBER OF REFLECTIONS : 14765 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.228 REMARK 3 R VALUE (WORKING SET) : 0.226 REMARK 3 FREE R VALUE : 0.260 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.090 REMARK 3 FREE R VALUE TEST SET COUNT : 751 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 19.6600 - 3.9200 0.99 2927 176 0.1832 0.2069 REMARK 3 2 3.9200 - 3.1200 0.99 2795 143 0.2078 0.2495 REMARK 3 3 3.1200 - 2.7300 1.00 2791 147 0.2744 0.3344 REMARK 3 4 2.7300 - 2.4800 1.00 2742 134 0.2775 0.3152 REMARK 3 5 2.4800 - 2.3000 1.00 2759 151 0.2795 0.3032 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.10 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) : 0.300 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 26.600 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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 : 0.013 2426 REMARK 3 ANGLE : 1.686 3279 REMARK 3 CHIRALITY : 0.106 350 REMARK 3 PLANARITY : 0.004 412 REMARK 3 DIHEDRAL : 18.094 921 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 9DFU COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 29-SEP-24. REMARK 100 THE DEPOSITION ID IS D_1000287993. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 13-DEC-23 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS-II REMARK 200 BEAMLINE : 17-ID-2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9201 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS EIGER X 16M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 14839 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 33.400 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.7 REMARK 200 DATA REDUNDANCY : 5.100 REMARK 200 R MERGE (I) : 0.21700 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 5.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.30 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.38 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.79900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.000 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: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 42.10 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.12 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M HEPES (PH 7.5), 25% (W/V) PEG REMARK 280 3350, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 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 18.56850 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 76.40500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 27.97950 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 76.40500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 18.56850 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 27.97950 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 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: MONOMERIC 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 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 8 REMARK 465 HIS A 9 REMARK 465 HIS A 10 REMARK 465 HIS A 11 REMARK 465 HIS A 12 REMARK 465 HIS A 13 REMARK 465 HIS A 14 REMARK 465 SER A 15 REMARK 465 SER A 16 REMARK 465 GLY A 17 REMARK 465 VAL A 18 REMARK 465 ASP A 19 REMARK 465 LEU A 20 REMARK 465 GLY A 21 REMARK 465 THR A 22 REMARK 465 GLU A 23 REMARK 465 ASN A 24 REMARK 465 LEU A 25 REMARK 465 TYR A 26 REMARK 465 PHE A 27 REMARK 465 GLN A 28 REMARK 465 SER A 29 REMARK 465 MET A 30 REMARK 465 GLY A 31 REMARK 465 ASN A 312 REMARK 465 GLU A 313 REMARK 465 GLN A 314 REMARK 465 VAL A 315 REMARK 465 GLU A 316 REMARK 465 ALA A 317 REMARK 465 CYS A 318 REMARK 465 SER A 319 REMARK 465 THR A 320 REMARK 465 GLY A 321 REMARK 465 MET A 322 REMARK 465 SER A 323 REMARK 465 GLU A 324 REMARK 465 LYS A 325 REMARK 465 LEU A 326 REMARK 465 VAL A 327 REMARK 465 TRP A 328 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 286 CG CD OE1 OE2 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 ALA A 85 -158.02 -157.05 REMARK 500 ASN A 186 15.12 -141.96 REMARK 500 ASN A 215 31.28 -153.93 REMARK 500 LYS A 310 109.41 103.06 REMARK 500 REMARK 500 REMARK: NULL REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 SF4 A 402 FE4 REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 45 SG REMARK 620 2 SF4 A 402 S1 128.9 REMARK 620 3 SF4 A 402 S2 136.6 89.2 REMARK 620 4 SF4 A 402 S3 106.9 91.6 89.5 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 SF4 A 402 FE1 REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 49 SG REMARK 620 2 SF4 A 402 S2 117.8 REMARK 620 3 SF4 A 402 S3 133.6 89.3 REMARK 620 4 SF4 A 402 S4 125.9 88.0 89.2 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 SF4 A 402 FE3 REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 52 SG REMARK 620 2 SF4 A 402 S1 130.7 REMARK 620 3 SF4 A 402 S2 118.9 88.5 REMARK 620 4 SF4 A 402 S4 129.3 88.0 88.1 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 SF4 A 402 FE2 REMARK 620 N RES CSSEQI ATOM REMARK 620 1 SAM A 403 N REMARK 620 2 SF4 A 402 S1 99.9 REMARK 620 3 SF4 A 402 S3 94.9 90.7 REMARK 620 4 SF4 A 402 S4 171.3 87.9 89.0 REMARK 620 5 SAM A 403 OXT 61.6 159.9 98.3 110.1 REMARK 620 N 1 2 3 4 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 9DFN RELATED DB: PDB REMARK 900 SAME CITATION DBREF 9DFU A 31 328 UNP G9N0G3 G9N0G3_HYPVG 31 328 SEQADV 9DFU MET A 8 UNP G9N0G3 INITIATING METHIONINE SEQADV 9DFU HIS A 9 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU HIS A 10 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU HIS A 11 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU HIS A 12 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU HIS A 13 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU HIS A 14 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU SER A 15 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU SER A 16 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU GLY A 17 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU VAL A 18 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU ASP A 19 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU LEU A 20 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU GLY A 21 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU THR A 22 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU GLU A 23 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU ASN A 24 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU LEU A 25 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU TYR A 26 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU PHE A 27 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU GLN A 28 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU SER A 29 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU MET A 30 UNP G9N0G3 EXPRESSION TAG SEQADV 9DFU HIS A 40 UNP G9N0G3 PHE 40 ENGINEERED MUTATION SEQRES 1 A 321 MET HIS HIS HIS HIS HIS HIS SER SER GLY VAL ASP LEU SEQRES 2 A 321 GLY THR GLU ASN LEU TYR PHE GLN SER MET GLY GLN ILE SEQRES 3 A 321 PRO VAL SER VAL ASN TYR HIS PHE THR ARG LYS CYS ASN SEQRES 4 A 321 LYS SER CYS GLY PHE CYS PHE HIS THR ALA LYS THR SER SEQRES 5 A 321 HIS MET GLU ASP ILE SER ARG ALA LYS ARG GLY LEU GLN SEQRES 6 A 321 LEU LEU GLN ARG ALA GLY MET LYS LYS ILE ASN PHE ALA SEQRES 7 A 321 GLY GLY GLU PRO PHE LEU TYR PRO LYS PHE LEU GLY GLU SEQRES 8 A 321 LEU VAL ASP PHE CYS LYS GLU ASP LEU HIS LEU GLU SER SEQRES 9 A 321 VAL SER ILE ILE THR ASN GLY SER LEU VAL ARG GLU GLU SEQRES 10 A 321 TRP VAL ARG LYS HIS ALA LYS ASN ILE ASP ILE LEU ALA SEQRES 11 A 321 CYS SER CYS ASP SER PHE ASP GLU ASN MET ASN ILE GLU SEQRES 12 A 321 ILE GLY ARG GLY THR GLY ASN GLN VAL GLU ILE LEU TYR SEQRES 13 A 321 ARG ILE ALA LYS TRP CYS ARG LYS ASN GLU ILE LYS PHE SEQRES 14 A 321 LYS LEU ASN THR VAL VAL THR ARG LEU ASN TYR GLU GLU SEQRES 15 A 321 ASP MET ASN GLU HIS ILE ASP THR LEU GLN PRO PHE ARG SEQRES 16 A 321 TRP LYS VAL PHE GLN VAL LEU ILE VAL GLU GLY GLU ASN SEQRES 17 A 321 ASP SER GLU LYS THR LEU ARG ASP ALA ARG ARG PHE THR SEQRES 18 A 321 ILE SER ASP LYS GLN PHE GLU VAL PHE CYS SER LYS HIS SEQRES 19 A 321 ARG HIS HIS LYS SER PHE VAL ALA GLU PRO ASN ARG LEU SEQRES 20 A 321 MET ALA SER SER TYR LEU LEU VAL ASP GLU TYR MET ARG SEQRES 21 A 321 PHE ILE ASP LYS ASP GLY ASN LYS LEU THR LYS SER ILE SEQRES 22 A 321 LEU ASP VAL GLY VAL GLU ALA ALA MET LYS GLU ILE LYS SEQRES 23 A 321 TRP ASP VAL ASP ALA PHE GLN GLU ARG GLY GLY VAL TYR SEQRES 24 A 321 GLU TRP THR LYS GLU ASN GLU GLN VAL GLU ALA CYS SER SEQRES 25 A 321 THR GLY MET SER GLU LYS LEU VAL TRP HET CTP A 401 29 HET SF4 A 402 8 HET SAM A 403 27 HET CL A 404 1 HETNAM CTP CYTIDINE-5'-TRIPHOSPHATE HETNAM SF4 IRON/SULFUR CLUSTER HETNAM SAM S-ADENOSYLMETHIONINE HETNAM CL CHLORIDE ION FORMUL 2 CTP C9 H16 N3 O14 P3 FORMUL 3 SF4 FE4 S4 FORMUL 4 SAM C15 H22 N6 O5 S FORMUL 5 CL CL 1- FORMUL 6 HOH *91(H2 O) HELIX 1 AA1 ASP A 63 ALA A 77 1 15 HELIX 2 AA2 GLU A 88 LEU A 91 5 4 HELIX 3 AA3 TYR A 92 ASP A 106 1 15 HELIX 4 AA4 ARG A 122 ALA A 130 1 9 HELIX 5 AA5 LYS A 131 ILE A 133 5 3 HELIX 6 AA6 ASP A 144 GLY A 152 1 9 HELIX 7 AA7 ASN A 157 ASN A 172 1 16 HELIX 8 AA8 MET A 191 GLN A 199 1 9 HELIX 9 AA9 ASP A 223 THR A 228 5 6 HELIX 10 AB1 SER A 230 ARG A 242 1 13 HELIX 11 AB2 PRO A 251 ALA A 256 1 6 HELIX 12 AB3 SER A 279 GLY A 284 1 6 HELIX 13 AB4 GLY A 284 LYS A 290 1 7 HELIX 14 AB5 ASP A 295 ARG A 302 1 8 SHEET 1 AA110 PHE A 247 GLU A 250 0 SHEET 2 AA110 ARG A 202 GLN A 207 1 N VAL A 205 O VAL A 248 SHEET 3 AA110 LYS A 175 VAL A 182 1 N VAL A 182 O PHE A 206 SHEET 4 AA110 ILE A 135 SER A 139 1 N LEU A 136 O LYS A 175 SHEET 5 AA110 SER A 111 THR A 116 1 N ILE A 114 O ALA A 137 SHEET 6 AA110 LYS A 81 GLY A 86 1 N ILE A 82 O SER A 111 SHEET 7 AA110 SER A 36 THR A 42 1 N TYR A 39 O ASN A 83 SHEET 8 AA110 LEU A 261 VAL A 262 1 O VAL A 262 N ASN A 38 SHEET 9 AA110 PHE A 268 ASP A 270 -1 O ILE A 269 N LEU A 261 SHEET 10 AA110 LYS A 275 LEU A 276 -1 O LYS A 275 N ASP A 270 LINK SG CYS A 45 FE4 SF4 A 402 1555 1555 2.08 LINK SG CYS A 49 FE1 SF4 A 402 1555 1555 1.97 LINK SG CYS A 52 FE3 SF4 A 402 1555 1555 2.10 LINK FE2 SF4 A 402 N SAM A 403 1555 1555 2.63 LINK FE2 SF4 A 402 OXT SAM A 403 1555 1555 2.73 CRYST1 37.137 55.959 152.810 90.00 90.00 90.00 P 21 21 21 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 0.026927 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017870 0.000000 0.00000 SCALE3 0.000000 0.000000 0.006544 0.00000