HEADER TRANSPORT PROTEIN 24-AUG-05 2AT3 TITLE 1.00 A CRYSTAL STRUCTURE OF L123V/L133V MUTANT OF NITROPHORIN 4 FROM TITLE 2 RHODNIUS PROLIXUS COMPLEXED WITH IMIDAZOLE AT PH 5.6 COMPND MOL_ID: 1; COMPND 2 MOLECULE: NITROPHORIN 4; COMPND 3 CHAIN: X; COMPND 4 SYNONYM: NP4; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RHODNIUS PROLIXUS; SOURCE 3 ORGANISM_TAXID: 13249; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 5 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: BL21DE3; SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PET17B KEYWDS LIPOCALIN, BETA BARREL, FERRIC HEME, IMIDAZOLE, TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR A.M.AMOIA,W.R.MONTFORT REVDAT 5 23-AUG-23 2AT3 1 REMARK REVDAT 4 20-OCT-21 2AT3 1 REMARK SEQADV LINK REVDAT 3 24-FEB-09 2AT3 1 VERSN REVDAT 2 12-FEB-08 2AT3 3 ATOM REVDAT 1 22-AUG-06 2AT3 0 JRNL AUTH A.M.AMOIA,W.R.MONTFORT JRNL TITL HEME DISTORTION IN NITROPHORIN 4: HIGH RESOLUTION STRUCTURES JRNL TITL 2 OF MUTATED POSITIONS L123V AND L133V AND HEME ALTERED JRNL TITL 3 PROTEINS JRNL REF TO BE PUBLISHED JRNL REFN REMARK 2 REMARK 2 RESOLUTION. 1.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 19.81 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.4 REMARK 3 NUMBER OF REFLECTIONS : 81937 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : FREE R REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.145 REMARK 3 R VALUE (WORKING SET) : 0.144 REMARK 3 FREE R VALUE : 0.167 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 4145 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.03 REMARK 3 REFLECTION IN BIN (WORKING SET) : 5002 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 85.52 REMARK 3 BIN R VALUE (WORKING SET) : 0.2470 REMARK 3 BIN FREE R VALUE SET COUNT : 261 REMARK 3 BIN FREE R VALUE : 0.2610 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1426 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 48 REMARK 3 SOLVENT ATOMS : 260 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 10.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 8.38 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.13000 REMARK 3 B22 (A**2) : 0.13000 REMARK 3 B33 (A**2) : -0.28000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -0.16000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.028 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.028 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.018 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 0.748 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.975 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.969 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 1922 ; 0.013 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): 1595 ; 0.002 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 2662 ; 1.658 ; 2.017 REMARK 3 BOND ANGLES OTHERS (DEGREES): 3766 ; 0.889 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 256 ; 7.381 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 85 ;37.950 ;28.588 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 316 ;13.355 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 3 ; 7.792 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 274 ; 0.095 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2299 ; 0.010 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 387 ; 0.006 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 469 ; 0.489 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 1723 ; 0.235 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 863 ; 0.186 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): 1054 ; 0.088 ; 0.200 REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 192 ; 0.148 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): 2 ; 0.014 ; 0.200 REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 19 ; 0.174 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): 57 ; 0.211 ; 0.200 REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 32 ; 0.148 ; 0.200 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): 1479 ; 1.541 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 470 ; 1.031 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 1909 ; 1.896 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 925 ; 2.584 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 739 ; 3.187 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL 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): 2317 ; 1.596 ; 3.000 REMARK 3 SPHERICITY; FREE ATOMS (A**2): 259 ; 7.035 ; 3.000 REMARK 3 SPHERICITY; BONDED ATOMS (A**2): 1772 ; 3.532 ; 3.000 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 : BABINET MODEL WITH MASK 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: ANISOTROPIC REFINEMENT REDUCED FREE R. REMARK 3 HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS REMARK 4 REMARK 4 2AT3 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 31-AUG-05. REMARK 100 THE DEPOSITION ID IS D_1000034279. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 20-FEB-02 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 5.6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL9-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.751 REMARK 200 MONOCHROMATOR : SINGLE CRYSTAL SI(311) BENT REMARK 200 MONOCHROMATOR (HORIZONTAL REMARK 200 FOCUSING) REMARK 200 OPTICS : FLAT MIRROR (VERTICAL FOCUSING) REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MAR SCANNER 345 MM PLATE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : BLU-ICE REMARK 200 DATA SCALING SOFTWARE : D*TREK 7.2SSIBETA, CRYSTALCLEAR REMARK 200 V. 1.0 D*TREK (MSC/RIGAKU) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 81947 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.000 REMARK 200 RESOLUTION RANGE LOW (A) : 19.810 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.4 REMARK 200 DATA REDUNDANCY : 3.230 REMARK 200 R MERGE (I) : 0.04000 REMARK 200 R SYM (I) : 0.04000 REMARK 200 FOR THE DATA SET : 20.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.04 REMARK 200 COMPLETENESS FOR SHELL (%) : 88.0 REMARK 200 DATA REDUNDANCY IN SHELL : 1.52 REMARK 200 R MERGE FOR SHELL (I) : 0.25000 REMARK 200 R SYM FOR SHELL (I) : 0.25000 REMARK 200 FOR SHELL : 2.600 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: PDB ENTRY 1X8O REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 19.06 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.53 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM PHOSPHATE, IMIDAZOLE, PH 5.6, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 300.0K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 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 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 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 35.11050 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 21.37150 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 35.11050 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 21.37150 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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A MONOMER CONSISTING OF CHAIN X REMARK 300 AND THE HEME, AND CAN BE GENERATED BY THE IDENTITY OPERATION: X,Y,Z 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: X 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH X 242 LIES ON A SPECIAL POSITION. REMARK 375 HOH X 314 LIES ON A SPECIAL POSITION. REMARK 375 HOH X 420 LIES ON A SPECIAL POSITION. 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 O LEU X 130 O GLY X 131 1.64 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 PHE X 18 57.59 -91.89 REMARK 500 ASP X 113 -159.01 -142.90 REMARK 500 ASP X 129 59.38 -147.32 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 HEM X 185 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS X 59 NE2 REMARK 620 2 HEM X 185 NA 88.8 REMARK 620 3 HEM X 185 NB 90.3 89.4 REMARK 620 4 HEM X 185 NC 91.6 179.3 91.2 REMARK 620 5 HEM X 185 ND 88.5 89.7 178.4 89.7 REMARK 620 6 IMD X 186 N1 178.3 90.7 91.4 88.9 89.9 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 HEM X 185 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IMD X 186 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2ASZ RELATED DB: PDB REMARK 900 L133V MUTANT OF NITROPHORIN 4 FROM RHODNIUS PROLIXUS COMPLEXED WITH REMARK 900 AMMONIA AT PH 7.5 REMARK 900 RELATED ID: 2AT0 RELATED DB: PDB REMARK 900 L133V MUTANT OF NITROPHORIN 4 FROM RHODNIUS PROLIXUS COMPLEXED WITH REMARK 900 NITRIC OXIDE AT PH 5.6 REMARK 900 RELATED ID: 1IKJ RELATED DB: PDB REMARK 900 NITROPHORIN 4 COMPLEXED WITH IMIDAZOLE AT PH 5.6 DBREF 2AT3 X 1 184 UNP Q94734 NP4_RHOPR 22 205 SEQADV 2AT3 VAL X 123 UNP Q94734 LEU 144 ENGINEERED MUTATION SEQADV 2AT3 VAL X 133 UNP Q94734 LEU 154 ENGINEERED MUTATION SEQRES 1 X 184 ALA CYS THR LYS ASN ALA ILE ALA GLN THR GLY PHE ASN SEQRES 2 X 184 LYS ASP LYS TYR PHE ASN GLY ASP VAL TRP TYR VAL THR SEQRES 3 X 184 ASP TYR LEU ASP LEU GLU PRO ASP ASP VAL PRO LYS ARG SEQRES 4 X 184 TYR CYS ALA ALA LEU ALA ALA GLY THR ALA SER GLY LYS SEQRES 5 X 184 LEU LYS GLU ALA LEU TYR HIS TYR ASP PRO LYS THR GLN SEQRES 6 X 184 ASP THR PHE TYR ASP VAL SER GLU LEU GLN VAL GLU SER SEQRES 7 X 184 LEU GLY LYS TYR THR ALA ASN PHE LYS LYS VAL ASP LYS SEQRES 8 X 184 ASN GLY ASN VAL LYS VAL ALA VAL THR ALA GLY ASN TYR SEQRES 9 X 184 TYR THR PHE THR VAL MET TYR ALA ASP ASP SER SER ALA SEQRES 10 X 184 LEU ILE HIS THR CYS VAL HIS LYS GLY ASN LYS ASP LEU SEQRES 11 X 184 GLY ASP VAL TYR ALA VAL LEU ASN ARG ASN LYS ASP ALA SEQRES 12 X 184 ALA ALA GLY ASP LYS VAL LYS SER ALA VAL SER ALA ALA SEQRES 13 X 184 THR LEU GLU PHE SER LYS PHE ILE SER THR LYS GLU ASN SEQRES 14 X 184 ASN CYS ALA TYR ASP ASN ASP SER LEU LYS SER LEU LEU SEQRES 15 X 184 THR LYS HET HEM X 185 43 HET IMD X 186 5 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM IMD IMIDAZOLE HETSYN HEM HEME FORMUL 2 HEM C34 H32 FE N4 O4 FORMUL 3 IMD C3 H5 N2 1+ FORMUL 4 HOH *260(H2 O) HELIX 1 1 ASN X 13 PHE X 18 1 6 HELIX 2 2 GLY X 146 ALA X 156 1 11 HELIX 3 3 GLU X 159 PHE X 163 5 5 HELIX 4 4 ASP X 174 LEU X 182 1 9 SHEET 1 A 7 VAL X 95 VAL X 97 0 SHEET 2 A 7 LYS X 81 VAL X 89 -1 N LYS X 88 O LYS X 96 SHEET 3 A 7 THR X 67 SER X 78 -1 N GLN X 75 O THR X 83 SHEET 4 A 7 LYS X 52 TYR X 60 -1 N LEU X 57 O ASP X 70 SHEET 5 A 7 CYS X 41 ALA X 49 -1 N GLY X 47 O LYS X 54 SHEET 6 A 7 ASN X 19 ASP X 30 -1 N TRP X 23 O LEU X 44 SHEET 7 A 7 ILE X 164 SER X 165 -1 O ILE X 164 N TYR X 28 SHEET 1 B 7 VAL X 95 VAL X 97 0 SHEET 2 B 7 LYS X 81 VAL X 89 -1 N LYS X 88 O LYS X 96 SHEET 3 B 7 TYR X 104 ALA X 112 -1 O TYR X 105 N ALA X 84 SHEET 4 B 7 SER X 116 HIS X 124 -1 O HIS X 124 N TYR X 104 SHEET 5 B 7 ASP X 132 ASN X 138 -1 O LEU X 137 N ALA X 117 SHEET 6 B 7 ASN X 19 ASP X 30 -1 N ASP X 27 O VAL X 136 SHEET 7 B 7 ILE X 164 SER X 165 -1 O ILE X 164 N TYR X 28 SSBOND 1 CYS X 2 CYS X 122 1555 1555 2.04 SSBOND 2 CYS X 41 CYS X 171 1555 1555 2.03 LINK NE2 HIS X 59 FE HEM X 185 1555 1555 2.00 LINK FE HEM X 185 N1 IMD X 186 1555 1555 1.98 SITE 1 AC1 17 VAL X 36 PRO X 37 TYR X 40 LEU X 44 SITE 2 AC1 17 LEU X 57 HIS X 59 ASP X 70 PHE X 86 SITE 3 AC1 17 LYS X 88 TYR X 105 ILE X 119 VAL X 123 SITE 4 AC1 17 LYS X 125 LYS X 128 LEU X 130 IMD X 186 SITE 5 AC1 17 HOH X 267 SITE 1 AC2 5 VAL X 123 LEU X 130 VAL X 133 HEM X 185 SITE 2 AC2 5 HOH X 212 CRYST1 70.221 42.743 52.886 90.00 94.09 90.00 C 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 0.014240 0.000000 0.001020 0.00000 SCALE2 0.000000 0.023400 0.000000 0.00000 SCALE3 0.000000 0.000000 0.018960 0.00000