HEADER OXYGEN TRANSPORT 12-DEC-95 1FSL TITLE FERRIC SOYBEAN LEGHEMOGLOBIN COMPLEXED WITH NICOTINATE COMPND MOL_ID: 1; COMPND 2 MOLECULE: LEGHEMOGLOBIN A; COMPND 3 CHAIN: A, B; COMPND 4 OTHER_DETAILS: FE(III), PH 6.0 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: GLYCINE MAX; SOURCE 3 ORGANISM_COMMON: SOYBEAN; SOURCE 4 ORGANISM_TAXID: 3847; SOURCE 5 ORGAN: ROOT NODULE KEYWDS HEME, RESPIRATORY PROTEIN, NITROGEN FIXATION, MULTIGENE FAMILY, KEYWDS 2 OXYGEN TRANSPORT EXPDTA X-RAY DIFFRACTION AUTHOR P.J.ELLIS,J.M.GUSS,H.C.FREEMAN REVDAT 4 18-APR-18 1FSL 1 REMARK REVDAT 3 04-APR-18 1FSL 1 REMARK REVDAT 2 24-FEB-09 1FSL 1 VERSN REVDAT 1 26-JUN-96 1FSL 0 JRNL AUTH P.J.ELLIS,C.A.APPLEBY,J.M.GUSS,W.N.HUNTER,D.L.OLLIS, JRNL AUTH 2 H.C.FREEMAN JRNL TITL STRUCTURE OF FERRIC SOYBEAN LEGHEMOGLOBIN A NICOTINATE AT JRNL TITL 2 2.3 A RESOLUTION. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 53 302 1997 JRNL REFN ISSN 0907-4449 JRNL PMID 15299933 JRNL DOI 10.1107/S0907444997000292 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH D.L.OLLIS,C.A.APPLEBY,P.M.COLMAN,A.E.CUTTEN,J.M.GUSS, REMARK 1 AUTH 2 M.P.VENKATAPPA,H.C.FREEMAN REMARK 1 TITL CRYSTAL STRUCTURE OF SOYBEAN FERRIC LEGHAEMOGLOBIN A REMARK 1 TITL 2 NICOTINATE AT A RESOLUTION OF 3.3 ANGSTROM REMARK 1 REF AUST.J.CHEM. V. 36 451 1983 REMARK 1 REFN ISSN 0004-9425 REMARK 2 REMARK 2 RESOLUTION. 2.30 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROFFT REMARK 3 AUTHORS : KONNERT,HENDRICKSON,FINZEL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 6.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 49.5 REMARK 3 NUMBER OF REFLECTIONS : 6877 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.158 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2158 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 104 REMARK 3 SOLVENT ATOMS : 70 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 12.30 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) : 0.18 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.009 ; 0.015 REMARK 3 ANGLE DISTANCE (A) : 0.016 ; 0.015 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.025 ; 0.030 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : 0.010 ; 0.015 REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : 0.078 ; 0.150 REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : 0.150 ; 0.250 REMARK 3 MULTIPLE TORSION (A) : 0.198 ; 0.250 REMARK 3 H-BOND (X...Y) (A) : 0.182 ; 0.250 REMARK 3 H-BOND (X-H...Y) (A) : 0.172 ; 0.250 REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : 2.200 ; 3.000 REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 0.590 ; 1.000 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.030 ; 1.500 REMARK 3 SIDE-CHAIN BOND (A**2) : 0.520 ; 1.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 0.940 ; 1.500 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1FSL 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_1000173403. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 1981 REMARK 200 TEMPERATURE (KELVIN) : 295 REMARK 200 PH : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 6 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : SEALED TUBE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : OTHER REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NI FILTER REMARK 200 OPTICS : COLLIMATOR REMARK 200 REMARK 200 DETECTOR TYPE : DIFFRACTOMETER REMARK 200 DETECTOR MANUFACTURER : ENRAF-NONIUS FAST REMARK 200 INTENSITY-INTEGRATION SOFTWARE : ENRAF-NONIUS REMARK 200 DATA SCALING SOFTWARE : PROTEIN (STEIGEMANN) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 14153 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 REMARK 200 RESOLUTION RANGE LOW (A) : 8.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : 1.300 REMARK 200 R MERGE (I) : 0.06100 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 53.62 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.65 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 6.0 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 28.27500 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: 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 B 88 HD1 HIS B 92 1.48 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 GLU A 5 CD GLU A 5 OE1 0.068 REMARK 500 GLU A 63 CD GLU A 63 OE2 0.073 REMARK 500 GLU B 35 CD GLU B 35 OE1 0.068 REMARK 500 GLU B 63 CD GLU B 63 OE2 0.073 REMARK 500 GLU B 124 CD GLU B 124 OE1 0.066 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 ASP A 123 CB - CG - OD1 ANGL. DEV. = 5.5 DEGREES REMARK 500 ARG B 70 NE - CZ - NH1 ANGL. DEV. = 3.0 DEGREES REMARK 500 ASP B 134 CB - CG - OD1 ANGL. DEV. = 7.3 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 ASN A 21 70.93 -152.31 REMARK 500 ALA A 40 -4.65 -56.43 REMARK 500 LYS A 142 84.50 -164.26 REMARK 500 ASN B 21 69.60 -154.80 REMARK 500 ASN B 49 52.19 -118.13 REMARK 500 LYS B 142 98.76 115.66 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 144 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 92 NE2 REMARK 620 2 HEM A 144 NA 93.2 REMARK 620 3 HEM A 144 NB 83.8 95.2 REMARK 620 4 HEM A 144 NC 71.1 163.0 89.6 REMARK 620 5 HEM A 144 ND 82.9 88.0 166.5 83.7 REMARK 620 6 NIO A 145 N 158.9 106.6 87.1 89.9 104.6 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM B 144 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 92 NE2 REMARK 620 2 HEM B 144 NA 78.4 REMARK 620 3 HEM B 144 NB 81.7 86.2 REMARK 620 4 HEM B 144 NC 95.7 173.2 89.6 REMARK 620 5 HEM B 144 ND 93.1 90.0 174.1 93.8 REMARK 620 6 NIO B 145 N 163.7 93.6 83.5 91.2 101.2 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 144 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NIO A 145 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 144 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NIO B 145 DBREF 1FSL A 1 143 UNP P02238 LGBA_SOYBN 1 143 DBREF 1FSL B 1 143 UNP P02238 LGBA_SOYBN 1 143 SEQRES 1 A 143 VAL ALA PHE THR GLU LYS GLN ASP ALA LEU VAL SER SER SEQRES 2 A 143 SER PHE GLU ALA PHE LYS ALA ASN ILE PRO GLN TYR SER SEQRES 3 A 143 VAL VAL PHE TYR THR SER ILE LEU GLU LYS ALA PRO ALA SEQRES 4 A 143 ALA LYS ASP LEU PHE SER PHE LEU ALA ASN GLY VAL ASP SEQRES 5 A 143 PRO THR ASN PRO LYS LEU THR GLY HIS ALA GLU LYS LEU SEQRES 6 A 143 PHE ALA LEU VAL ARG ASP SER ALA GLY GLN LEU LYS ALA SEQRES 7 A 143 SER GLY THR VAL VAL ALA ASP ALA ALA LEU GLY SER VAL SEQRES 8 A 143 HIS ALA GLN LYS ALA VAL THR ASP PRO GLN PHE VAL VAL SEQRES 9 A 143 VAL LYS GLU ALA LEU LEU LYS THR ILE LYS ALA ALA VAL SEQRES 10 A 143 GLY ASP LYS TRP SER ASP GLU LEU SER ARG ALA TRP GLU SEQRES 11 A 143 VAL ALA TYR ASP GLU LEU ALA ALA ALA ILE LYS LYS ALA SEQRES 1 B 143 VAL ALA PHE THR GLU LYS GLN ASP ALA LEU VAL SER SER SEQRES 2 B 143 SER PHE GLU ALA PHE LYS ALA ASN ILE PRO GLN TYR SER SEQRES 3 B 143 VAL VAL PHE TYR THR SER ILE LEU GLU LYS ALA PRO ALA SEQRES 4 B 143 ALA LYS ASP LEU PHE SER PHE LEU ALA ASN GLY VAL ASP SEQRES 5 B 143 PRO THR ASN PRO LYS LEU THR GLY HIS ALA GLU LYS LEU SEQRES 6 B 143 PHE ALA LEU VAL ARG ASP SER ALA GLY GLN LEU LYS ALA SEQRES 7 B 143 SER GLY THR VAL VAL ALA ASP ALA ALA LEU GLY SER VAL SEQRES 8 B 143 HIS ALA GLN LYS ALA VAL THR ASP PRO GLN PHE VAL VAL SEQRES 9 B 143 VAL LYS GLU ALA LEU LEU LYS THR ILE LYS ALA ALA VAL SEQRES 10 B 143 GLY ASP LYS TRP SER ASP GLU LEU SER ARG ALA TRP GLU SEQRES 11 B 143 VAL ALA TYR ASP GLU LEU ALA ALA ALA ILE LYS LYS ALA HET HEM A 144 73 HET NIO A 145 13 HET HEM B 144 73 HET NIO B 145 13 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM NIO NICOTINIC ACID HETSYN HEM HEME FORMUL 3 HEM 2(C34 H32 FE N4 O4) FORMUL 4 NIO 2(C6 H5 N O2) FORMUL 7 HOH *70(H2 O) HELIX 1 A1 THR A 4 ALA A 20 1 17 HELIX 2 B1 ASN A 21 ALA A 37 1 17 HELIX 3 C1 PRO A 38 PHE A 44 5 7 HELIX 4 E1 ASN A 55 GLY A 80 1 26 HELIX 5 F1 ASP A 85 GLN A 94 1 10 HELIX 6 G1 THR A 98 VAL A 117 1 20 HELIX 7 H1 SER A 122 LYS A 141 1 20 HELIX 8 A2 THR B 4 ALA B 20 1 17 HELIX 9 B2 ASN B 21 ALA B 37 1 17 HELIX 10 C2 PRO B 38 PHE B 44 5 7 HELIX 11 E2 ASN B 55 GLY B 80 1 26 HELIX 12 F2 ASP B 85 GLN B 94 1 10 HELIX 13 G2 THR B 98 VAL B 117 1 20 HELIX 14 H2 SER B 122 LYS B 141 1 20 LINK FE HEM A 144 NE2 HIS A 92 1555 1555 2.26 LINK FE HEM A 144 N NIO A 145 1555 1555 2.10 LINK FE HEM B 144 NE2 HIS B 92 1555 1555 2.19 LINK FE HEM B 144 N NIO B 145 1555 1555 2.34 SITE 1 AC1 11 PHE A 44 HIS A 61 LYS A 64 LEU A 68 SITE 2 AC1 11 VAL A 91 HIS A 92 GLN A 101 PHE A 102 SITE 3 AC1 11 TYR A 133 LEU A 136 NIO A 145 SITE 1 AC2 6 TYR A 30 PHE A 44 PHE A 46 HIS A 61 SITE 2 AC2 6 LEU A 65 HEM A 144 SITE 1 AC3 11 LEU B 43 PHE B 44 HIS B 61 LYS B 64 SITE 2 AC3 11 HIS B 92 GLN B 101 PHE B 102 TYR B 133 SITE 3 AC3 11 ILE B 140 NIO B 145 HOH B 175 SITE 1 AC4 6 TYR B 30 PHE B 44 PHE B 46 HIS B 61 SITE 2 AC4 6 LEU B 65 HEM B 144 CRYST1 52.690 56.550 57.800 90.00 109.90 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 0.018979 0.000000 0.006870 0.00000 SCALE2 0.000000 0.017683 0.000000 0.00000 SCALE3 0.000000 0.000000 0.018400 0.00000 MTRIX1 1 -0.461976 0.030242 0.886377 -41.53064 1 MTRIX2 1 -0.021546 -0.999506 0.022872 45.05125 1 MTRIX3 1 0.886631 -0.008532 0.462400 19.71374 1