HEADER SIGNALING PROTEIN 23-OCT-07 3B47 TITLE PERIPLASMIC SENSOR DOMAIN OF CHEMOTAXIS PROTEIN GSU0582 COMPND MOL_ID: 1; COMPND 2 MOLECULE: METHYL-ACCEPTING CHEMOTAXIS PROTEIN; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: PERIPLASMIC DOMAIN OF GSU0582; COMPND 5 SYNONYM: GSU0582; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 FRAGMENT: GSU0582 RESIDUES:35-168; SOURCE 3 ORGANISM_SCIENTIFIC: GEOBACTER SULFURREDUCENS; SOURCE 4 ORGANISM_TAXID: 35554; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: SF110 KEYWDS CHEMOTAXIS, PAS DOMAIN, C-TYPE HEME CONTAINING SENSOR, GEOBACTER KEYWDS 2 SULFURREDUCENS, UNKNOWN FUNCTION, SIGNALING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR P.R.POKKULURI,M.SCHIFFER REVDAT 3 21-FEB-24 3B47 1 REMARK REVDAT 2 24-FEB-09 3B47 1 VERSN REVDAT 1 08-APR-08 3B47 0 JRNL AUTH P.R.POKKULURI,M.PESSANHA,Y.Y.LONDER,S.J.WOOD,N.E.DUKE, JRNL AUTH 2 R.WILTON,T.CATARINO,C.A.SALGUEIRO,M.SCHIFFER JRNL TITL STRUCTURES AND SOLUTION PROPERTIES OF TWO NOVEL PERIPLASMIC JRNL TITL 2 SENSOR DOMAINS WITH C-TYPE HEME FROM CHEMOTAXIS PROTEINS OF JRNL TITL 3 GEOBACTER SULFURREDUCENS: IMPLICATIONS FOR SIGNAL JRNL TITL 4 TRANSDUCTION. JRNL REF J.MOL.BIOL. V. 377 1498 2008 JRNL REFN ISSN 0022-2836 JRNL PMID 18329666 JRNL DOI 10.1016/J.JMB.2008.01.087 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 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) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 40.33 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 180783.880 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 95.2 REMARK 3 NUMBER OF REFLECTIONS : 17240 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) : 0.247 REMARK 3 FREE R VALUE : 0.275 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.300 REMARK 3 FREE R VALUE TEST SET COUNT : 1610 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.007 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.13 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 90.70 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2522 REMARK 3 BIN R VALUE (WORKING SET) : 0.2720 REMARK 3 BIN FREE R VALUE : 0.2930 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 9.10 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 251 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.019 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 910 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 43 REMARK 3 SOLVENT ATOMS : 52 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 26.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 40.60 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 3.19000 REMARK 3 B22 (A**2) : 3.19000 REMARK 3 B33 (A**2) : -6.37000 REMARK 3 B12 (A**2) : 2.70000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.28 REMARK 3 ESD FROM SIGMAA (A) : 0.20 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.33 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.25 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.008 REMARK 3 BOND ANGLES (DEGREES) : 1.700 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.20 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.150 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) : 1.410 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.240 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.130 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.050 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.36 REMARK 3 BSOL : 86.44 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : HEM.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : HEM.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 3B47 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-NOV-07. REMARK 100 THE DEPOSITION ID IS D_1000045057. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 05-FEB-07 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 19-BM REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97857 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : CUSTOM-MADE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-3000 REMARK 200 DATA SCALING SOFTWARE : HKL-3000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 18068 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.8 REMARK 200 DATA REDUNDANCY : 5.600 REMARK 200 R MERGE (I) : 0.04300 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 34.4000 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) : 2.07 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 5.50 REMARK 200 R MERGE FOR SHELL (I) : 0.29400 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 4.700 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: SAD REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.62 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.39 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG-ION SCREEN: 33 (DILUTED BY WATER REMARK 280 4:1), PH 5.0, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 32 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+1/3 REMARK 290 6555 -X,-X+Y,-Z+2/3 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 39.57333 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 19.78667 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 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 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 19.78667 REMARK 290 SMTRY1 6 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 39.57333 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: BURIED SURFACE AREA IS HIGH BECAUSE IT IS A SWAPPED DIMER 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 7430 ANGSTROM**2 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 -0.500000 0.866025 0.000000 0.00000 REMARK 350 BIOMT2 2 0.866025 0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 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 A 205 LIES ON A SPECIAL POSITION. 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 ASN A 35 REMARK 465 ALA A 36 REMARK 465 GLY A 95 REMARK 465 LYS A 96 REMARK 465 LYS A 97 REMARK 465 GLN A 98 REMARK 465 ASP A 99 REMARK 465 VAL A 121 REMARK 465 ASP A 122 REMARK 465 GLY A 123 REMARK 465 ALA A 166 REMARK 465 ARG A 167 REMARK 465 ASN A 168 REMARK 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 ARG A 70 C CG CD NE CZ NH1 NH2 REMARK 480 ASP A 74 CG OD1 OD2 REMARK 480 ARG A 76 NE CZ NH1 NH2 REMARK 480 ARG A 85 CG CD NE CZ NH1 NH2 REMARK 480 LYS A 117 CG CD CE NZ REMARK 480 ARG A 118 CG CD NE CZ NH1 NH2 REMARK 480 LYS A 120 CD CE NZ REMARK 480 ARG A 124 CG CD NE CZ NH1 NH2 REMARK 480 GLN A 145 CG CD OE1 NE2 REMARK 480 ARG A 148 CD NE CZ NH1 NH2 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 SG CYS A 142 CAC HEM A 199 1.82 REMARK 500 SG CYS A 139 CAB HEM A 199 1.83 REMARK 500 REMARK 500 REMARK: NULL 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 ARG A 85 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES 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 199 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 143 NE2 REMARK 620 2 HEM A 199 NA 95.2 REMARK 620 3 HEM A 199 NB 86.6 90.2 REMARK 620 4 HEM A 199 NC 90.0 174.7 89.1 REMARK 620 5 HEM A 199 ND 94.2 90.9 178.6 89.8 REMARK 620 6 HOH A 200 O 175.3 88.1 90.1 86.6 89.0 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 A 199 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 3B42 RELATED DB: PDB REMARK 900 PERIPLASMIC SENSOR DOMAIN OF CHEMOTAXIS PROTEIN GSU0935 DBREF 3B47 A 35 168 UNP Q74FM4 Q74FM4_GEOSL 35 168 SEQRES 1 A 134 ASN ALA ILE MET ASP LEU GLN THR ARG ASN THR ARG GLY SEQRES 2 A 134 LEU SER THR LEU VAL VAL ARG ASP ILE GLY GLU LEU MET SEQRES 3 A 134 MET ALA GLY ASP MET ALA VAL ILE GLU ARG TYR VAL ALA SEQRES 4 A 134 ASP VAL ARG GLY LYS GLY ALA VAL LEU ASP LEU ARG ILE SEQRES 5 A 134 TYR ASP ALA ALA GLY ARG PRO ALA GLY LYS LYS GLN ASP SEQRES 6 A 134 ALA PRO ASP GLY GLU VAL GLN ALA ALA LEU THR SER GLY SEQRES 7 A 134 ALA THR ALA GLU LYS ARG HIS LYS VAL ASP GLY ARG HIS SEQRES 8 A 134 VAL LEU SER PHE ILE VAL PRO LEU ALA ASN GLU VAL ARG SEQRES 9 A 134 CYS GLN SER CYS HIS GLU GLN GLY ALA ARG PHE ASN GLY SEQRES 10 A 134 ALA MET LEU LEU THR THR SER LEU GLU GLU GLY TYR ALA SEQRES 11 A 134 GLY ALA ARG ASN HET HEM A 199 43 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 HEM C34 H32 FE N4 O4 FORMUL 3 HOH *52(H2 O) HELIX 1 1 ASP A 39 MET A 61 1 23 HELIX 2 2 ASP A 64 ARG A 76 1 13 HELIX 3 3 ASP A 102 GLY A 112 1 11 HELIX 4 4 ARG A 138 CYS A 142 5 5 SHEET 1 A 4 VAL A 81 ASP A 88 0 SHEET 2 A 4 PHE A 149 SER A 158 -1 O LEU A 154 N ARG A 85 SHEET 3 A 4 VAL A 126 ALA A 134 -1 N LEU A 133 O GLY A 151 SHEET 4 A 4 ALA A 115 HIS A 119 -1 N LYS A 117 O SER A 128 LINK NE2 HIS A 143 FE HEM A 199 1555 1555 1.99 LINK FE HEM A 199 O HOH A 200 1555 1555 2.01 SITE 1 AC1 16 ARG A 43 ARG A 54 MET A 60 MET A 61 SITE 2 AC1 16 GLY A 63 TYR A 87 ASP A 88 ARG A 138 SITE 3 AC1 16 CYS A 139 CYS A 142 HIS A 143 ASN A 150 SITE 4 AC1 16 HOH A 200 HOH A 211 HOH A 239 HOH A 244 CRYST1 63.470 63.470 59.360 90.00 90.00 120.00 P 32 2 1 6 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 0.015755 0.009096 0.000000 0.00000 SCALE2 0.000000 0.018193 0.000000 0.00000 SCALE3 0.000000 0.000000 0.016846 0.00000