HEADER OXIDOREDUCTASE 24-MAY-04 1TDW TITLE CRYSTAL STRUCTURE OF DOUBLE TRUNCATED HUMAN PHENYLALANINE HYDROXYLASE TITLE 2 BH4-RESPONSIVE PKU MUTANT A313T. COMPND MOL_ID: 1; COMPND 2 MOLECULE: PHENYLALANINE-4-HYDROXYLASE; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: DELTA NH 102 - DELTA COOH 428; COMPND 5 SYNONYM: PAH, PHE-4- MONOOXYGENASE; COMPND 6 EC: 1.14.16.1; COMPND 7 ENGINEERED: YES; COMPND 8 MUTATION: 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 BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PMALC2 KEYWDS PHENYLALANINE CATABOLISM, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR H.ERLANDSEN,A.L.PEY,A.GAMEZ,B.PEREZ,L.R.DESVIAT,C.AGUADO,R.KOCH, AUTHOR 2 S.SURENDRAN,S.TYRING,R.MATALON,C.R.SCRIVER,M.UGARTE,A.MARTINEZ, AUTHOR 3 R.C.STEVENS REVDAT 5 23-AUG-23 1TDW 1 REMARK REVDAT 4 27-OCT-21 1TDW 1 REMARK SEQADV LINK REVDAT 3 11-OCT-17 1TDW 1 REMARK REVDAT 2 24-FEB-09 1TDW 1 VERSN REVDAT 1 30-NOV-04 1TDW 0 JRNL AUTH H.ERLANDSEN,A.L.PEY,A.GAMEZ,B.PEREZ,L.R.DESVIAT,C.AGUADO, JRNL AUTH 2 R.KOCH,S.SURENDRAN,S.TYRING,R.MATALON,C.R.SCRIVER,M.UGARTE, JRNL AUTH 3 A.MARTINEZ,R.C.STEVENS JRNL TITL CORRECTION OF KINETIC AND STABILITY DEFECTS BY JRNL TITL 2 TETRAHYDROBIOPTERIN IN PHENYLKETONURIA PATIENTS WITH CERTAIN JRNL TITL 3 PHENYLALANINE HYDROXYLASE MUTATIONS. JRNL REF PROC.NATL.ACAD.SCI.USA V. 101 16903 2004 JRNL REFN ISSN 0027-8424 JRNL PMID 15557004 JRNL DOI 10.1073/PNAS.0407256101 REMARK 2 REMARK 2 RESOLUTION. 2.10 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 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) : 19.93 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) (%) : 96.6 REMARK 3 NUMBER OF REFLECTIONS : 26547 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) : 0.206 REMARK 3 FREE R VALUE : 0.237 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1237 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) : 2.23 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.2660 REMARK 3 BIN FREE R VALUE : 0.2970 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : 195 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.021 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2526 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 161 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 35.10 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -1.35900 REMARK 3 B22 (A**2) : 0.00000 REMARK 3 B33 (A**2) : 0.00000 REMARK 3 B12 (A**2) : -2.46600 REMARK 3 B13 (A**2) : 3.82500 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.25 REMARK 3 ESD FROM SIGMAA (A) : 0.24 REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.30 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.24 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.013 REMARK 3 BOND ANGLES (DEGREES) : NULL REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.80 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.970 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : ANISOTROPIC 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 1TDW COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 26-MAY-04. REMARK 100 THE DEPOSITION ID IS D_1000022568. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 12-MAR-03 REMARK 200 TEMPERATURE (KELVIN) : 277 REMARK 200 PH : 6.8 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-D REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : OSMIC MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV++ REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000, D*TREK REMARK 200 DATA SCALING SOFTWARE : D*TREK, HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 26608 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.100 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 7.500 REMARK 200 R MERGE (I) : 0.11800 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 20.0000 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) : 2.17 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 4.00 REMARK 200 R MERGE FOR SHELL (I) : 0.61200 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 20.00 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: DIFFERENCE FOURIER REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: PDB ENTRY 1PAH REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 60.04 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.20 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 5-10% ETHYLENE GLYCOL, 20-40 MM PIPES, REMARK 280 PH 6.8, 8-15% PEG 2000, 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 62.31000 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 62.31000 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 33.20550 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 54.06900 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 33.20550 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 54.06900 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 62.31000 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 33.20550 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 54.06900 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 62.31000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 33.20550 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 54.06900 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: MOLECULE IS A DIMER (SEE 1PAH) 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 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 32.46 -143.65 REMARK 500 ALA A 246 -74.38 -62.92 REMARK 500 THR A 328 -84.06 -133.72 REMARK 500 SER A 391 164.44 178.21 REMARK 500 PRO A 407 94.83 -65.51 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 425 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 285 NE2 REMARK 620 2 HIS A 290 NE2 95.9 REMARK 620 3 GLU A 330 OE2 127.9 89.8 REMARK 620 4 HOH A 426 O 99.0 87.4 133.0 REMARK 620 5 HOH A 586 O 94.2 168.7 88.1 85.9 REMARK 620 N 1 2 3 4 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 425 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1PAH RELATED DB: PDB DBREF 1TDW A 117 424 UNP P00439 PH4H_HUMAN 117 424 SEQADV 1TDW THR A 313 UNP P00439 ALA 313 ENGINEERED MUTATION SEQRES 1 A 308 THR VAL PRO TRP PHE PRO ARG THR ILE GLN GLU LEU ASP SEQRES 2 A 308 ARG PHE ALA ASN GLN ILE LEU SER TYR GLY ALA GLU LEU SEQRES 3 A 308 ASP ALA ASP HIS PRO GLY PHE LYS ASP PRO VAL TYR ARG SEQRES 4 A 308 ALA ARG ARG LYS GLN PHE ALA ASP ILE ALA TYR ASN TYR SEQRES 5 A 308 ARG HIS GLY GLN PRO ILE PRO ARG VAL GLU TYR MET GLU SEQRES 6 A 308 GLU GLU LYS LYS THR TRP GLY THR VAL PHE LYS THR LEU SEQRES 7 A 308 LYS SER LEU TYR LYS THR HIS ALA CYS TYR GLU TYR ASN SEQRES 8 A 308 HIS ILE PHE PRO LEU LEU GLU LYS TYR CYS GLY PHE HIS SEQRES 9 A 308 GLU ASP ASN ILE PRO GLN LEU GLU ASP VAL SER GLN PHE SEQRES 10 A 308 LEU GLN THR CYS THR GLY PHE ARG LEU ARG PRO VAL ALA SEQRES 11 A 308 GLY LEU LEU SER SER ARG ASP PHE LEU GLY GLY LEU ALA SEQRES 12 A 308 PHE ARG VAL PHE HIS CYS THR GLN TYR ILE ARG HIS GLY SEQRES 13 A 308 SER LYS PRO MET TYR THR PRO GLU PRO ASP ILE CYS HIS SEQRES 14 A 308 GLU LEU LEU GLY HIS VAL PRO LEU PHE SER ASP ARG SER SEQRES 15 A 308 PHE ALA GLN PHE SER GLN GLU ILE GLY LEU ALA SER LEU SEQRES 16 A 308 GLY THR PRO ASP GLU TYR ILE GLU LYS LEU ALA THR ILE SEQRES 17 A 308 TYR TRP PHE THR VAL GLU PHE GLY LEU CYS LYS GLN GLY SEQRES 18 A 308 ASP SER ILE LYS ALA TYR GLY ALA GLY LEU LEU SER SER SEQRES 19 A 308 PHE GLY GLU LEU GLN TYR CYS LEU SER GLU LYS PRO LYS SEQRES 20 A 308 LEU LEU PRO LEU GLU LEU GLU LYS THR ALA ILE GLN ASN SEQRES 21 A 308 TYR THR VAL THR GLU PHE GLN PRO LEU TYR TYR VAL ALA SEQRES 22 A 308 GLU SER PHE ASN ASP ALA LYS GLU LYS VAL ARG ASN PHE SEQRES 23 A 308 ALA ALA THR ILE PRO ARG PRO PHE SER VAL ARG TYR ASP SEQRES 24 A 308 PRO TYR THR GLN ARG ILE GLU VAL LEU HET FE A 425 1 HETNAM FE FE (III) ION FORMUL 2 FE FE 3+ FORMUL 3 HOH *161(H2 O) HELIX 1 1 THR A 124 GLN A 134 5 11 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 SER A 196 1 17 HELIX 5 5 LEU A 197 ALA A 202 1 6 HELIX 6 6 CYS A 203 GLY A 218 1 16 HELIX 7 7 GLN A 226 GLY A 239 1 14 HELIX 8 8 SER A 250 PHE A 260 1 11 HELIX 9 9 ASP A 282 HIS A 290 1 9 HELIX 10 10 HIS A 290 SER A 295 1 6 HELIX 11 11 ASP A 296 LEU A 311 1 16 HELIX 12 12 PRO A 314 PHE A 327 1 14 HELIX 13 13 GLY A 344 SER A 349 1 6 HELIX 14 14 SER A 350 CYS A 357 1 8 HELIX 15 15 GLU A 368 ALA A 373 1 6 HELIX 16 16 SER A 391 THR A 405 1 15 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 GLN A 336 O SER A 339 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 SSBOND 1 CYS A 203 CYS A 334 1555 1555 2.06 LINK NE2 HIS A 285 FE FE A 425 1555 1555 2.09 LINK NE2 HIS A 290 FE FE A 425 1555 1555 2.02 LINK OE2 GLU A 330 FE FE A 425 1555 1555 2.07 LINK FE FE A 425 O HOH A 426 1555 1555 2.49 LINK FE FE A 425 O HOH A 586 1555 1555 2.35 SITE 1 AC1 6 HIS A 285 HIS A 290 GLU A 330 HOH A 426 SITE 2 AC1 6 HOH A 500 HOH A 586 CRYST1 66.411 108.138 124.620 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 0.015058 0.000000 0.000000 0.00000 SCALE2 0.000000 0.009247 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008024 0.00000