HEADER NITRIC OXIDE TRANSPORT 19-JAN-98 1NP1 TITLE CRYSTAL STRUCTURE OF THE COMPLEX OF NITROPHORIN 1 FROM RHODNIUS TITLE 2 PROLIXUS WITH HISTAMINE COMPND MOL_ID: 1; COMPND 2 MOLECULE: NITROPHORIN 1; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: NP1; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RHODNIUS PROLIXUS; SOURCE 3 ORGANISM_TAXID: 13249; SOURCE 4 CELL_LINE: BL21; SOURCE 5 ORGAN: SALIVARY GLAND; 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: PET17B; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PET17B-NP1 KEYWDS NITRIC OXIDE TRANSPORT, FERRIC HEME, HISTAMINE, ANTIHISTAMINE, KEYWDS 2 VASODILATOR, LIPOCALIN EXPDTA X-RAY DIFFRACTION AUTHOR A.WEICHSEL,W.R.MONTFORT REVDAT 4 30-OCT-24 1NP1 1 REMARK LINK REVDAT 3 18-APR-18 1NP1 1 REMARK REVDAT 2 24-FEB-09 1NP1 1 VERSN REVDAT 1 27-MAY-98 1NP1 0 JRNL AUTH A.WEICHSEL,J.F.ANDERSEN,D.E.CHAMPAGNE,F.A.WALKER, JRNL AUTH 2 W.R.MONTFORT JRNL TITL CRYSTAL STRUCTURES OF A NITRIC OXIDE TRANSPORT PROTEIN FROM JRNL TITL 2 A BLOOD-SUCKING INSECT. JRNL REF NAT.STRUCT.BIOL. V. 5 304 1998 JRNL REFN ISSN 1072-8368 JRNL PMID 9546222 JRNL DOI 10.1038/NSB0498-304 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.F.ANDERSEN,D.E.CHAMPAGNE,A.WEICHSEL,J.M.RIBEIRO, REMARK 1 AUTH 2 C.A.BALFOUR,V.DRESS,W.R.MONTFORT REMARK 1 TITL NITRIC OXIDE BINDING AND CRYSTALLIZATION OF RECOMBINANT REMARK 1 TITL 2 NITROPHORIN I, A NITRIC OXIDE TRANSPORT PROTEIN FROM THE REMARK 1 TITL 3 BLOOD-SUCKING BUG RHODNIUS PROLIXUS REMARK 1 REF BIOCHEMISTRY V. 36 4423 1997 REMARK 1 REFN ISSN 0006-2960 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.851 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 15.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.1000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 85.4 REMARK 3 NUMBER OF REFLECTIONS : 22295 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) : 0.181 REMARK 3 FREE R VALUE : 0.278 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 630 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.011 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 8 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.09 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 66.20 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2016 REMARK 3 BIN R VALUE (WORKING SET) : 0.2950 REMARK 3 BIN FREE R VALUE : 0.3540 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 102 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.035 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2886 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 112 REMARK 3 SOLVENT ATOMS : 157 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 21.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 31.00 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) : NULL REMARK 3 ESD FROM SIGMAA (A) : 0.25 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) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.016 REMARK 3 BOND ANGLES (DEGREES) : 1.900 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 30.00 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.380 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 2.560 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 3.950 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 4.010 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 5.730 ; 2.500 REMARK 3 REMARK 3 NCS MODEL : UNRESTRAINED 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : PARAM19X.HEME REMARK 3 PARAMETER FILE 3 : PARAM.PO4 REMARK 3 PARAMETER FILE 4 : PARAM19.SOL REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : TOPH19X.HEME REMARK 3 TOPOLOGY FILE 3 : TOP.PO4 REMARK 3 TOPOLOGY FILE 4 : TOPH19.SOL REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: BULK SOLVENT CORRECTION WITH K = REMARK 3 0.3578, B = 93.9, BIJVOET PAIRS NOT AVERAGED AND ANOMALOUS REMARK 3 SCATTERING FOR FE+3 INCLUDED IN THE FINAL CYCLES OF REFINEMENT. REMARK 4 REMARK 4 1NP1 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000175360. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 10-APR-96 REMARK 200 TEMPERATURE (KELVIN) : 293 REMARK 200 PH : 7.5 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 : ENRAF-NONIUS FR571 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : COLLIMATOR REMARK 200 REMARK 200 DETECTOR TYPE : DIFFRACTOMETER REMARK 200 DETECTOR MANUFACTURER : ENRAF-NONIUS FAST REMARK 200 INTENSITY-INTEGRATION SOFTWARE : AGROVATA/ROTAVATA, MADNES REMARK 200 DATA SCALING SOFTWARE : AGROVATA, ROTAVATA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 25247 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 28.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.7 REMARK 200 DATA REDUNDANCY : 2.800 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.04100 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 13.4000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.14 REMARK 200 COMPLETENESS FOR SHELL (%) : 94.0 REMARK 200 DATA REDUNDANCY IN SHELL : 2.40 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.15300 REMARK 200 <I/SIGMA(I)> FOR SHELL : 4.100 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR REMARK 200 SOFTWARE USED: X-PLOR 3.851 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.40 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 2.8 M AMMONIUM PHOSPHATE, 0.1 M REMARK 280 TRIS.HCL, PH 7.5, ROOM TEMPERATURE REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,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 37.28500 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: B 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: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 CYS A 2 CA - CB - SG ANGL. DEV. = 7.2 DEGREES REMARK 500 TYR B 40 CA - CB - CG ANGL. DEV. = -16.4 DEGREES 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 A 18 49.89 -85.99 REMARK 500 ASP A 174 79.81 -116.26 REMARK 500 LYS B 63 -75.68 -58.55 REMARK 500 SER B 78 169.04 173.73 REMARK 500 ASN B 169 -9.37 -44.61 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 A 302 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 59 NE2 REMARK 620 2 HEM A 302 NA 93.4 REMARK 620 3 HEM A 302 NB 95.5 88.6 REMARK 620 4 HEM A 302 NC 85.9 177.3 88.9 REMARK 620 5 HEM A 302 ND 87.7 91.6 176.8 91.0 REMARK 620 6 HSM A 303 NE2 172.3 92.6 89.4 88.3 87.4 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM B 303 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 59 NE2 REMARK 620 2 HEM B 303 NA 90.8 REMARK 620 3 HEM B 303 NB 93.6 90.2 REMARK 620 4 HEM B 303 NC 90.0 178.9 90.6 REMARK 620 5 HEM B 303 ND 87.8 90.0 178.6 89.1 REMARK 620 6 HSM B 304 NE2 171.3 85.4 94.2 93.8 84.4 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 PO4 A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 B 302 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 302 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HSM A 303 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 303 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HSM B 304 DBREF 1NP1 A 1 184 UNP Q26239 NP1_RHOPR 24 207 DBREF 1NP1 B 1 184 UNP Q26239 NP1_RHOPR 24 207 SEQRES 1 A 184 LYS CYS THR LYS ASN ALA LEU ALA GLN THR GLY PHE ASN SEQRES 2 A 184 LYS ASP LYS TYR PHE ASN GLY ASP VAL TRP TYR VAL THR SEQRES 3 A 184 ASP TYR LEU ASP LEU GLU PRO ASP ASP VAL PRO LYS ARG SEQRES 4 A 184 TYR CYS ALA ALA LEU ALA ALA GLY THR ALA SER GLY LYS SEQRES 5 A 184 LEU LYS GLU ALA LEU TYR HIS TYR ASP PRO LYS THR GLN SEQRES 6 A 184 ASP THR PHE TYR ASP VAL SER GLU LEU GLN GLU GLU SER SEQRES 7 A 184 PRO GLY LYS TYR THR ALA ASN PHE LYS LYS VAL GLU LYS SEQRES 8 A 184 ASN GLY ASN VAL LYS VAL ASP VAL THR SER GLY ASN TYR SEQRES 9 A 184 TYR THR PHE THR VAL MET TYR ALA ASP ASP SER SER ALA SEQRES 10 A 184 LEU ILE HIS THR CYS LEU HIS LYS GLY ASN LYS ASP LEU SEQRES 11 A 184 GLY ASP LEU TYR ALA VAL LEU ASN ARG ASN LYS ASP THR SEQRES 12 A 184 ASN ALA GLY ASP LYS VAL LYS GLY ALA VAL THR ALA ALA SEQRES 13 A 184 SER LEU LYS PHE SER ASP PHE ILE SER THR LYS ASP ASN SEQRES 14 A 184 LYS CYS GLU TYR ASP ASN VAL SER LEU LYS SER LEU LEU SEQRES 15 A 184 THR LYS SEQRES 1 B 184 LYS CYS THR LYS ASN ALA LEU ALA GLN THR GLY PHE ASN SEQRES 2 B 184 LYS ASP LYS TYR PHE ASN GLY ASP VAL TRP TYR VAL THR SEQRES 3 B 184 ASP TYR LEU ASP LEU GLU PRO ASP ASP VAL PRO LYS ARG SEQRES 4 B 184 TYR CYS ALA ALA LEU ALA ALA GLY THR ALA SER GLY LYS SEQRES 5 B 184 LEU LYS GLU ALA LEU TYR HIS TYR ASP PRO LYS THR GLN SEQRES 6 B 184 ASP THR PHE TYR ASP VAL SER GLU LEU GLN GLU GLU SER SEQRES 7 B 184 PRO GLY LYS TYR THR ALA ASN PHE LYS LYS VAL GLU LYS SEQRES 8 B 184 ASN GLY ASN VAL LYS VAL ASP VAL THR SER GLY ASN TYR SEQRES 9 B 184 TYR THR PHE THR VAL MET TYR ALA ASP ASP SER SER ALA SEQRES 10 B 184 LEU ILE HIS THR CYS LEU HIS LYS GLY ASN LYS ASP LEU SEQRES 11 B 184 GLY ASP LEU TYR ALA VAL LEU ASN ARG ASN LYS ASP THR SEQRES 12 B 184 ASN ALA GLY ASP LYS VAL LYS GLY ALA VAL THR ALA ALA SEQRES 13 B 184 SER LEU LYS PHE SER ASP PHE ILE SER THR LYS ASP ASN SEQRES 14 B 184 LYS CYS GLU TYR ASP ASN VAL SER LEU LYS SER LEU LEU SEQRES 15 B 184 THR LYS HET PO4 A 301 5 HET HEM A 302 43 HET HSM A 303 8 HET PO4 B 302 5 HET HEM B 303 43 HET HSM B 304 8 HETNAM PO4 PHOSPHATE ION HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM HSM HISTAMINE HETSYN HEM HEME FORMUL 3 PO4 2(O4 P 3-) FORMUL 4 HEM 2(C34 H32 FE N4 O4) FORMUL 5 HSM 2(C5 H9 N3) FORMUL 9 HOH *157(H2 O) HELIX 1 1 LYS A 14 TYR A 17 1 4 HELIX 2 2 ASP A 147 ALA A 156 1 10 HELIX 3 3 PHE A 160 ASP A 162 5 3 HELIX 4 4 ASN A 175 LEU A 182 1 8 HELIX 5 5 LYS B 14 TYR B 17 1 4 HELIX 6 6 ASP B 147 ALA B 155 1 9 HELIX 7 7 PHE B 160 ASP B 162 5 3 HELIX 8 8 ASN B 175 LEU B 182 1 8 SHEET 1 A 9 VAL A 22 TYR A 24 0 SHEET 2 A 9 CYS A 41 ALA A 49 -1 N LEU A 44 O TRP A 23 SHEET 3 A 9 LYS A 52 TYR A 60 -1 N TYR A 60 O CYS A 41 SHEET 4 A 9 THR A 67 SER A 78 -1 N LEU A 74 O LEU A 53 SHEET 5 A 9 LYS A 81 VAL A 89 -1 N VAL A 89 O TYR A 69 SHEET 6 A 9 TYR A 104 ALA A 112 -1 N PHE A 107 O TYR A 82 SHEET 7 A 9 SER A 116 HIS A 124 -1 N HIS A 124 O TYR A 104 SHEET 8 A 9 ASP A 132 ASN A 138 -1 N LEU A 137 O ALA A 117 SHEET 9 A 9 TYR A 24 ASP A 30 -1 N LEU A 29 O TYR A 134 SHEET 1 B 9 VAL B 22 TYR B 24 0 SHEET 2 B 9 TYR B 40 ALA B 49 -1 N LEU B 44 O TRP B 23 SHEET 3 B 9 LYS B 52 ASP B 61 -1 N TYR B 60 O CYS B 41 SHEET 4 B 9 THR B 67 SER B 78 -1 N LEU B 74 O LEU B 53 SHEET 5 B 9 LYS B 81 VAL B 89 -1 N VAL B 89 O TYR B 69 SHEET 6 B 9 ASN B 103 ALA B 112 -1 N PHE B 107 O TYR B 82 SHEET 7 B 9 SER B 116 LYS B 125 -1 N HIS B 124 O TYR B 104 SHEET 8 B 9 ASP B 132 ASN B 138 -1 N LEU B 137 O ALA B 117 SHEET 9 B 9 TYR B 24 ASP B 30 -1 N LEU B 29 O TYR B 134 SSBOND 1 CYS A 2 CYS A 122 1555 1555 2.03 SSBOND 2 CYS A 41 CYS A 171 1555 1555 2.03 SSBOND 3 CYS B 2 CYS B 122 1555 1555 2.02 SSBOND 4 CYS B 41 CYS B 171 1555 1555 2.04 LINK NE2 HIS A 59 FE HEM A 302 1555 1555 1.96 LINK FE HEM A 302 NE2 HSM A 303 1555 1555 2.10 LINK NE2 HIS B 59 FE HEM B 303 1555 1555 1.99 LINK FE HEM B 303 NE2 HSM B 304 1555 1555 2.05 SITE 1 AC1 4 ASP A 113 SER A 115 SER A 116 HOH A 344 SITE 1 AC2 6 ASP B 113 SER B 116 LYS B 148 HOH B 323 SITE 2 AC2 6 HOH B 327 HOH B 378 SITE 1 AC3 16 VAL A 25 TYR A 28 ASP A 34 TYR A 40 SITE 2 AC3 16 LEU A 57 HIS A 59 PHE A 68 ASP A 70 SITE 3 AC3 16 PHE A 86 LYS A 88 TYR A 105 LEU A 123 SITE 4 AC3 16 LYS A 125 LEU A 133 HSM A 303 HOH A 312 SITE 1 AC4 6 ASP A 30 GLU A 32 LEU A 123 LEU A 130 SITE 2 AC4 6 HEM A 302 HOH A 304 SITE 1 AC5 13 TYR B 28 TYR B 40 LEU B 57 HIS B 59 SITE 2 AC5 13 PHE B 68 ASP B 70 PHE B 86 LYS B 88 SITE 3 AC5 13 TYR B 105 LEU B 123 LYS B 125 HSM B 304 SITE 4 AC5 13 HOH B 313 SITE 1 AC6 5 ASP B 30 GLU B 32 LEU B 130 HEM B 303 SITE 2 AC6 5 HOH B 305 CRYST1 39.550 74.570 66.560 90.00 99.94 90.00 P 1 21 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 0.025284 0.000000 0.004431 0.00000 SCALE2 0.000000 0.013410 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015253 0.00000 MTRIX1 1 0.702190 -0.039690 -0.710880 42.02000 1 MTRIX2 1 -0.053950 -0.998540 0.002450 76.55000 1 MTRIX3 1 -0.709940 0.036630 -0.703310 97.87000 1