HEADER OXIDOREDUCTASE 15-MAY-02 1LRM TITLE CRYSTAL STRUCTURE OF BINARY COMPLEX OF THE CATALYTIC DOMAIN TITLE 2 OF HUMAN PHENYLALANINE HYDROXYLASE WITH DIHYDROBIOPTERIN TITLE 3 (BH2) COMPND MOL_ID: 1; COMPND 2 MOLECULE: PHENYLALANINE-4-HYDROXYLASE; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: CATALYTIC DOMAIN (RESIDUES 103-427); COMPND 5 SYNONYM: PAH, PHE-4-MONOOXYGENASE; COMPND 6 EC: 1.14.16.1; 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: PAH; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PMAL KEYWDS BASKET-ARRANGEMENT, 13 ALPHA-HELICES, 6 BETA-STRANDS, KEYWDS 2 FERRIC IRON, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR O.A.ANDERSEN REVDAT 3 24-FEB-09 1LRM 1 VERSN REVDAT 2 28-FEB-06 1LRM 1 JRNL REMARK REVDAT 1 12-JUN-02 1LRM 0 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. 2.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES, PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 26185 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 SET) : 0.211 REMARK 3 FREE R VALUE : 0.235 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 2579 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL 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) : 2.11 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.2720 REMARK 3 BIN FREE R VALUE : 0.3230 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : 50 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2517 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 18 REMARK 3 SOLVENT ATOMS : 194 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 27.90 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 27.70 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.34 REMARK 3 ESD FROM SIGMAA (A) : 0.26 REMARK 3 LOW RESOLUTION CUTOFF (A) : 10.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.36 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.26 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 1.16 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : OVERALL ANISOTROPIC B VALUE REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL REMARK 3 REMARK 3 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1LRM COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 30-MAY-02. REMARK 100 THE RCSB ID CODE IS RCSB016221. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 07-APR-01 REMARK 200 TEMPERATURE (KELVIN) : 110 REMARK 200 PH : 6.8 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : BM1A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.8000 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 26185 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.100 REMARK 200 RESOLUTION RANGE LOW (A) : 10.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 4.200 REMARK 200 R MERGE (I) : 0.05900 REMARK 200 R SYM (I) : 0.05900 REMARK 200 FOR THE DATA SET : 11.1000 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) : 2.21 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 4.20 REMARK 200 R MERGE FOR SHELL (I) : 0.31800 REMARK 200 R SYM FOR SHELL (I) : 0.31800 REMARK 200 FOR SHELL : 23.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: STARTING WITH 1PAH REMARK 200 PHASES REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: PDB ENTRY 1PAH REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 58.59 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.97 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 20% PEG 2000, 11% ETHYLENE GLYCOL REMARK 280 0.12M NA-HEPES PH 6.8, 5MM BH2, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 277K 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 62.08400 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 62.08400 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 33.29400 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 54.05850 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 33.29400 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 54.05850 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 62.08400 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 33.29400 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 54.05850 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 62.08400 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 33.29400 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 54.05850 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 300 REMARK: THE SECOND PART OF THE BIOLOGICAL DIMER IS GENERATED BY: REMARK 300 -X, Y, -Z+1/2. 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 62.08400 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 103 REMARK 465 ALA A 104 REMARK 465 THR A 105 REMARK 465 VAL A 106 REMARK 465 HIS A 107 REMARK 465 GLU A 108 REMARK 465 LEU A 109 REMARK 465 SER A 110 REMARK 465 ARG A 111 REMARK 465 ASP A 112 REMARK 465 LYS A 113 REMARK 465 LYS A 114 REMARK 465 LYS A 115 REMARK 465 ASP A 116 REMARK 465 THR A 117 REMARK 465 ASP A 425 REMARK 465 ASN A 426 REMARK 465 THR A 427 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 GLN A 134 54.13 -147.37 REMARK 500 THR A 328 -78.86 -127.73 REMARK 500 PRO A 407 99.02 -60.34 REMARK 500 PRO A 409 23.39 -73.67 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 FE A 428 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 285 NE2 REMARK 620 2 HIS A 290 NE2 104.9 REMARK 620 3 GLU A 330 OE2 110.5 76.9 REMARK 620 4 HOH A1174 O 87.4 167.7 98.7 REMARK 620 5 HOH A1143 O 96.0 90.1 152.6 88.9 REMARK 620 6 HOH A1145 O 173.0 81.8 72.4 85.9 82.1 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE A 428 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HBI A 429 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1DMW RELATED DB: PDB REMARK 900 CATALYTIC DOMAIN OF HUMAN PHENYLALANINE HYDROXYLASE(FE(III) REMARK 900 ) IN COMPLEX WITH DIHYDROBIOPTERIN REMARK 900 RELATED ID: 1J8U RELATED DB: PDB REMARK 900 CATALYTIC DOMAIN OF HUMAN PHENYLALANINE HYDROXYLASE(FE(II)) REMARK 900 IN COMPLEX WITH TETRAHYDROBIOPTERIN REMARK 900 RELATED ID: 1J8T RELATED DB: PDB REMARK 900 CATALYTIC DOMAIN OF HUMAN PHENYLALANINE HYDROXYLASE(FE(II)) REMARK 900 RELATED ID: 1PAH RELATED DB: PDB REMARK 900 CATALYTIC DOMAIN OF HUMAN PHENYLALANINE HYDROXYLASE(FE(III)) REMARK 900 RELATED ID: 2PAH RELATED DB: PDB REMARK 900 CATALYTIC AND TETRAMERIZATION DOMAINS OF HUMAN REMARK 900 PHENYLALANINE HYDROXYLASE(FE(III)) REMARK 900 RELATED ID: 1KW0 RELATED DB: PDB REMARK 900 CATALYTIC DOMAIN OF HUMAN PHENYLALANINE HYDROXYLASE(FE(II)) REMARK 900 IN COMPLEX WITH TETRAHYDROBIOPTERIN AND THIENYLALANINE DBREF 1LRM A 103 427 UNP P00439 PH4H_HUMAN 103 427 SEQRES 1 A 325 GLY ALA THR VAL HIS GLU LEU SER ARG ASP LYS LYS LYS SEQRES 2 A 325 ASP THR VAL PRO TRP PHE PRO ARG THR ILE GLN GLU LEU SEQRES 3 A 325 ASP ARG PHE ALA ASN GLN ILE LEU SER TYR GLY ALA GLU SEQRES 4 A 325 LEU ASP ALA ASP HIS PRO GLY PHE LYS ASP PRO VAL TYR SEQRES 5 A 325 ARG ALA ARG ARG LYS GLN PHE ALA ASP ILE ALA TYR ASN SEQRES 6 A 325 TYR ARG HIS GLY GLN PRO ILE PRO ARG VAL GLU TYR MET SEQRES 7 A 325 GLU GLU GLU LYS LYS THR TRP GLY THR VAL PHE LYS THR SEQRES 8 A 325 LEU LYS SER LEU TYR LYS THR HIS ALA CYS TYR GLU TYR SEQRES 9 A 325 ASN HIS ILE PHE PRO LEU LEU GLU LYS TYR CYS GLY PHE SEQRES 10 A 325 HIS GLU ASP ASN ILE PRO GLN LEU GLU ASP VAL SER GLN SEQRES 11 A 325 PHE LEU GLN THR CYS THR GLY PHE ARG LEU ARG PRO VAL SEQRES 12 A 325 ALA GLY LEU LEU SER SER ARG ASP PHE LEU GLY GLY LEU SEQRES 13 A 325 ALA PHE ARG VAL PHE HIS CYS THR GLN TYR ILE ARG HIS SEQRES 14 A 325 GLY SER LYS PRO MET TYR THR PRO GLU PRO ASP ILE CYS SEQRES 15 A 325 HIS GLU LEU LEU GLY HIS VAL PRO LEU PHE SER ASP ARG SEQRES 16 A 325 SER PHE ALA GLN PHE SER GLN GLU ILE GLY LEU ALA SER SEQRES 17 A 325 LEU GLY ALA PRO ASP GLU TYR ILE GLU LYS LEU ALA THR SEQRES 18 A 325 ILE TYR TRP PHE THR VAL GLU PHE GLY LEU CYS LYS GLN SEQRES 19 A 325 GLY ASP SER ILE LYS ALA TYR GLY ALA GLY LEU LEU SER SEQRES 20 A 325 SER PHE GLY GLU LEU GLN TYR CYS LEU SER GLU LYS PRO SEQRES 21 A 325 LYS LEU LEU PRO LEU GLU LEU GLU LYS THR ALA ILE GLN SEQRES 22 A 325 ASN TYR THR VAL THR GLU PHE GLN PRO LEU TYR TYR VAL SEQRES 23 A 325 ALA GLU SER PHE ASN ASP ALA LYS GLU LYS VAL ARG ASN SEQRES 24 A 325 PHE ALA ALA THR ILE PRO ARG PRO PHE SER VAL ARG TYR SEQRES 25 A 325 ASP PRO TYR THR GLN ARG ILE GLU VAL LEU ASP ASN THR HET FE A 428 1 HET HBI A 429 17 HETNAM FE FE (III) ION HETNAM HBI 7,8-DIHYDROBIOPTERIN FORMUL 2 FE FE 3+ FORMUL 3 HBI C9 H13 N5 O3 FORMUL 4 HOH *194(H2 O) HELIX 1 1 THR A 124 ALA A 132 5 9 HELIX 2 2 GLY A 139 ASP A 143 5 5 HELIX 3 3 ASP A 151 TYR A 168 1 18 HELIX 4 4 MET A 180 ALA A 202 1 23 HELIX 5 5 CYS A 203 CYS A 217 1 15 HELIX 6 6 GLN A 226 GLY A 239 1 14 HELIX 7 7 SER A 250 ALA A 259 1 10 HELIX 8 8 ASP A 282 HIS A 290 1 9 HELIX 9 9 PRO A 292 SER A 295 5 4 HELIX 10 10 ASP A 296 LEU A 311 1 16 HELIX 11 11 PRO A 314 PHE A 327 1 14 HELIX 12 12 GLY A 344 SER A 349 1 6 HELIX 13 13 SER A 350 CYS A 357 1 8 HELIX 14 14 GLU A 368 ALA A 373 1 6 HELIX 15 15 SER A 391 ALA A 404 1 14 SHEET 1 A 2 ARG A 241 PRO A 244 0 SHEET 2 A 2 VAL A 262 CYS A 265 1 O CYS A 265 N ARG A 243 SHEET 1 B 4 SER A 339 ALA A 342 0 SHEET 2 B 4 LEU A 333 GLN A 336 -1 N CYS A 334 O LYS A 341 SHEET 3 B 4 LEU A 385 ALA A 389 1 O ALA A 389 N LEU A 333 SHEET 4 B 4 LYS A 363 PRO A 366 1 N LEU A 365 O VAL A 388 SHEET 1 C 2 SER A 411 ASP A 415 0 SHEET 2 C 2 ARG A 420 LEU A 424 -1 O GLU A 422 N ARG A 413 LINK NE2 HIS A 285 FE FE A 428 1555 1555 2.22 LINK NE2 HIS A 290 FE FE A 428 1555 1555 2.30 LINK OE2 GLU A 330 FE FE A 428 1555 1555 2.19 LINK FE FE A 428 O HOH A1174 1555 1555 2.29 LINK FE FE A 428 O HOH A1143 1555 1555 2.37 LINK FE FE A 428 O HOH A1145 1555 1555 2.48 SITE 1 AC1 7 HIS A 285 HIS A 290 GLU A 330 HBI A 429 SITE 2 AC1 7 HOH A1143 HOH A1145 HOH A1174 SITE 1 AC2 11 VAL A 245 GLY A 247 LEU A 249 SER A 251 SITE 2 AC2 11 PHE A 254 TYR A 325 FE A 428 HOH A1111 SITE 3 AC2 11 HOH A1143 HOH A1145 HOH A1155 CRYST1 66.588 108.117 124.168 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 0.015018 0.000000 0.000000 0.00000 SCALE2 0.000000 0.009249 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008054 0.00000 MASTER 319 0 2 15 8 0 5 6 0 0 0 25 END