HEADER LIGASE 22-JUN-09 3HY4 TITLE STRUCTURE OF HUMAN MTHFS WITH N5-IMINIUM PHOSPHATE COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5-FORMYLTETRAHYDROFOLATE CYCLO-LIGASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: 5,10-METHENYL-TETRAHYDROFOLATE SYNTHETASE, METHENYL-THF COMPND 5 SYNTHETASE, MTHFS; COMPND 6 EC: 6.3.3.2; COMPND 7 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: MTHFS; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 511693; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PET21B KEYWDS ANTIFOLATE, CANCER, N5-IMINIUM PHOSPHATE, ACETYLATION, ATP-BINDING, KEYWDS 2 CYTOPLASM, FOLATE-BINDING, LIGASE, MAGNESIUM, NUCLEOTIDE-BINDING, KEYWDS 3 POLYMORPHISM EXPDTA X-RAY DIFFRACTION AUTHOR D.WU,Y.LI,G.SONG,C.CHENG,N.SHAW,Z.-J.LIU REVDAT 4 01-NOV-23 3HY4 1 REMARK REVDAT 3 20-OCT-09 3HY4 1 JRNL REVDAT 2 28-JUL-09 3HY4 1 REMARK REVDAT 1 14-JUL-09 3HY4 0 JRNL AUTH D.WU,Y.LI,G.SONG,C.CHENG,R.ZHANG,A.JOACHIMIAK,N.SHAW, JRNL AUTH 2 Z.-J.LIU JRNL TITL STRUCTURAL BASIS FOR THE INHIBITION OF HUMAN JRNL TITL 2 5,10-METHENYLTETRAHYDROFOLATE SYNTHETASE BY N10-SUBSTITUTED JRNL TITL 3 FOLATE ANALOGUES JRNL REF CANCER RES. V. 69 7294 2009 JRNL REFN ISSN 0008-5472 JRNL PMID 19738041 JRNL DOI 10.1158/0008-5472.CAN-09-1927 REMARK 2 REMARK 2 RESOLUTION. 2.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (PHENIX.REFINE) 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) : 2.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 19.32 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.350 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.2 REMARK 3 NUMBER OF REFLECTIONS : 5426 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.229 REMARK 3 R VALUE (WORKING SET) : 0.226 REMARK 3 FREE R VALUE : 0.300 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.460 REMARK 3 FREE R VALUE TEST SET COUNT : 242 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 19.3210 - 3.5180 0.99 2644 125 0.2130 0.2750 REMARK 3 2 3.5180 - 2.7950 0.99 2540 117 0.2500 0.3490 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 : 0.37 REMARK 3 B_SOL : 32.49 REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.480 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 28.800 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 31.02 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 5.88600 REMARK 3 B22 (A**2) : 1.45800 REMARK 3 B33 (A**2) : -7.34500 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 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 : 0.004 1617 REMARK 3 ANGLE : 0.769 2167 REMARK 3 CHIRALITY : 0.046 228 REMARK 3 PLANARITY : 0.005 276 REMARK 3 DIHEDRAL : 18.413 643 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: THE LIGAND N5G IN THIS ENTRY IS N5 REMARK 3 -IMINIUM PHOSPHATE. HOWEVER, THERE IS SOME DISCREPANCY IN THE REMARK 3 GEOMETRY. THE GEOMETRY FOR N5G IS SUGGESTED BY THE REFINEMENT. REMARK 3 THE CO-ORDINATES FIT WELL IN THE ELECTRON DENSITY MAP. THE MAP REMARK 3 WAS GENERATED USING A DATASET COLLECTED AT 2.8 ANGSTROM REMARK 3 RESOLUTION. THE DENSITY FOR THE LIGAND IS UNAMBIGUOUS AND REMARK 3 THEREFORE THE GEOMETRIES ARE CORRECT AND ARE AS THEY WOULD BE IN REMARK 3 A BIOLOGICAL MOLECULE, WHERE THE MICRO ENVIRONMENT HAS A REMARK 3 PROFOUND INFLUENCE ON THE GEOMETRIES OF THE LIGAND. REMARK 4 REMARK 4 3HY4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 24-JUN-09. REMARK 100 THE DEPOSITION ID IS D_1000053725. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 19-MAY-09 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU FR-E+ SUPERBRIGHT REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.54 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV++ REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 6020 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.700 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.3 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL 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) : 2.70 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.80 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.3 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: PDB ENTRY 3HXT REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.17 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.24 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 100MM HEPES, PH6.6, 20MM MGCL2.6H2O, REMARK 280 20MM NICL2.6H2O, 20% (W/V) PEG 3350, VAPOR DIFFUSION, HANGING REMARK 280 DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 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 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 30.07450 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 30.07450 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 24.03250 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 72.29150 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 24.03250 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 72.29150 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 30.07450 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 24.03250 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 72.29150 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 30.07450 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 24.03250 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 72.29150 REMARK 290 SMTRY3 8 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 ALA A 23 REMARK 465 GLU A 187 REMARK 465 ASN A 188 REMARK 465 ASP A 199 REMARK 465 SER A 200 REMARK 465 SER A 201 REMARK 465 THR A 202 REMARK 465 ALA A 203 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 19 CG CD OE1 NE2 REMARK 470 ARG A 22 CB CG CD NE CZ NH1 NH2 REMARK 470 MET A 24 CG SD CE REMARK 470 GLN A 182 CG CD OE1 NE2 REMARK 470 VAL A 185 CG1 CG2 REMARK 470 ASP A 189 CG OD1 OD2 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 21 -103.29 -67.41 REMARK 500 ASP A 60 35.33 -94.96 REMARK 500 SER A 87 -147.14 -120.05 REMARK 500 GLN A 162 -70.87 -61.92 REMARK 500 LEU A 181 -70.05 -67.58 REMARK 500 TYR A 197 -169.54 177.67 REMARK 500 REMARK 500 REMARK: NULL REMARK 610 REMARK 610 MISSING HETEROATOM REMARK 610 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 610 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 610 I=INSERTION CODE): REMARK 610 M RES C SSEQI REMARK 610 N5G A 501 REMARK 610 PO4 A 502 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 NI A 204 NI REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 89 NE2 REMARK 620 2 ASP A 91 OD2 106.4 REMARK 620 N 1 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI A 204 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 205 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 206 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 207 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE N5G A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 502 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3HXT RELATED DB: PDB REMARK 900 STRUCTURE OF HUMAN MTHFS, APO ENZYME REMARK 900 RELATED ID: 3HY3 RELATED DB: PDB REMARK 900 STRUCTURE OF HUMAN MTHFS COMPLEXED WITH 10-FORMYLTETRAHYDROFOLATE REMARK 900 RELATED ID: 3HY6 RELATED DB: PDB REMARK 900 STRUCTURE OF HUMAN MTHFS WITH ADP DBREF 3HY4 A 1 203 UNP P49914 MTHFS_HUMAN 1 203 SEQRES 1 A 203 MET ALA ALA ALA ALA VAL SER SER ALA LYS ARG SER LEU SEQRES 2 A 203 ARG GLY GLU LEU LYS GLN ARG LEU ARG ALA MET SER ALA SEQRES 3 A 203 GLU GLU ARG LEU ARG GLN SER ARG VAL LEU SER GLN LYS SEQRES 4 A 203 VAL ILE ALA HIS SER GLU TYR GLN LYS SER LYS ARG ILE SEQRES 5 A 203 SER ILE PHE LEU SER MET GLN ASP GLU ILE GLU THR GLU SEQRES 6 A 203 GLU ILE ILE LYS ASP ILE PHE GLN ARG GLY LYS ILE CYS SEQRES 7 A 203 PHE ILE PRO ARG TYR ARG PHE GLN SER ASN HIS MET ASP SEQRES 8 A 203 MET VAL ARG ILE GLU SER PRO GLU GLU ILE SER LEU LEU SEQRES 9 A 203 PRO LYS THR SER TRP ASN ILE PRO GLN PRO GLY GLU GLY SEQRES 10 A 203 ASP VAL ARG GLU GLU ALA LEU SER THR GLY GLY LEU ASP SEQRES 11 A 203 LEU ILE PHE MET PRO GLY LEU GLY PHE ASP LYS HIS GLY SEQRES 12 A 203 ASN ARG LEU GLY ARG GLY LYS GLY TYR TYR ASP ALA TYR SEQRES 13 A 203 LEU LYS ARG CYS LEU GLN HIS GLN GLU VAL LYS PRO TYR SEQRES 14 A 203 THR LEU ALA LEU ALA PHE LYS GLU GLN ILE CYS LEU GLN SEQRES 15 A 203 VAL PRO VAL ASN GLU ASN ASP MET LYS VAL ASP GLU VAL SEQRES 16 A 203 LEU TYR GLU ASP SER SER THR ALA HET NI A 204 1 HET MG A 205 1 HET MG A 206 1 HET MG A 207 1 HET N5G A 501 34 HET PO4 A 502 4 HETNAM NI NICKEL (II) ION HETNAM MG MAGNESIUM ION HETNAM N5G N-({TRANS-4-[({(2R,4R,4AS,6S,8AS)-2-AMINO-4-HYDROXY-5- HETNAM 2 N5G [(PHOSPHONOOXY)METHYL]DECAHYDROPTERIDIN-6-YL}METHYL) HETNAM 3 N5G AMINO]CYCLOHEXYL}CARBONYL)-L-GLUTAMIC ACID HETNAM PO4 PHOSPHATE ION FORMUL 2 NI NI 2+ FORMUL 3 MG 3(MG 2+) FORMUL 6 N5G C20 H38 N7 O10 P FORMUL 7 PO4 O4 P 3- FORMUL 8 HOH *46(H2 O) HELIX 1 1 MET A 1 ARG A 22 1 22 HELIX 2 2 SER A 25 ALA A 42 1 18 HELIX 3 3 HIS A 43 SER A 49 1 7 HELIX 4 4 THR A 64 ARG A 74 1 11 HELIX 5 5 SER A 97 LEU A 103 5 7 HELIX 6 6 GLU A 122 THR A 126 5 5 HELIX 7 7 GLY A 151 GLN A 164 1 14 HELIX 8 8 PHE A 175 GLU A 177 5 3 SHEET 1 A 6 MET A 90 ARG A 94 0 SHEET 2 A 6 ILE A 77 TYR A 83 -1 N ILE A 80 O VAL A 93 SHEET 3 A 6 ARG A 51 SER A 53 1 N ILE A 52 O ILE A 77 SHEET 4 A 6 LEU A 131 MET A 134 1 O PHE A 133 N SER A 53 SHEET 5 A 6 TYR A 169 LEU A 173 1 O LEU A 171 N MET A 134 SHEET 6 A 6 GLU A 194 LEU A 196 1 O LEU A 196 N ALA A 172 SHEET 1 B 3 ARG A 145 LEU A 146 0 SHEET 2 B 3 GLY A 138 ASP A 140 -1 N GLY A 138 O LEU A 146 SHEET 3 B 3 ILE A 179 CYS A 180 1 O CYS A 180 N PHE A 139 LINK NE2 HIS A 89 NI NI A 204 1555 1555 2.52 LINK OD2 ASP A 91 NI NI A 204 1555 1555 2.33 SITE 1 AC1 5 ARG A 82 HIS A 89 ASP A 91 HIS A 163 SITE 2 AC1 5 HOH A 250 SITE 1 AC2 2 GLU A 27 HIS A 142 SITE 1 AC3 2 LEU A 181 HOH A 233 SITE 1 AC4 4 MET A 92 ALA A 123 LEU A 124 TYR A 156 SITE 1 AC5 16 PHE A 55 LEU A 56 GLU A 61 TYR A 83 SITE 2 AC5 16 MET A 90 TRP A 109 PRO A 135 ARG A 148 SITE 3 AC5 16 GLY A 149 LYS A 150 TYR A 152 TYR A 153 SITE 4 AC5 16 HOH A 217 HOH A 230 HOH A 251 PO4 A 502 SITE 1 AC6 10 ARG A 145 GLY A 147 ARG A 148 GLY A 149 SITE 2 AC6 10 LYS A 150 GLY A 151 TYR A 152 TYR A 153 SITE 3 AC6 10 ASP A 154 N5G A 501 CRYST1 48.065 144.583 60.149 90.00 90.00 90.00 C 2 2 21 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 0.020805 0.000000 0.000000 0.00000 SCALE2 0.000000 0.006916 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016625 0.00000