HEADER OXYGEN STORAGE/TRANSPORT 15-FEB-03 1NZ5 TITLE THE HORSE HEART MYOGLOBIN VARIANT K45E/K63E COMPLEXED WITH MANGANESE COMPND MOL_ID: 1; COMPND 2 MOLECULE: MYOGLOBIN; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: EQUUS CABALLUS; SOURCE 3 ORGANISM_COMMON: HORSE; SOURCE 4 ORGANISM_TAXID: 9796; SOURCE 5 GENE: MB; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS MANGANESE MN2+ HORSE HEART MYOGLOBIN ENGINEERED METAL BINDING SITE, KEYWDS 2 OXYGEN STORAGE-TRANSPORT COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR C.L.HUNTER,R.MAURUS,M.R.MAUK,H.LEE,E.L.RAVEN,H.TONG,N.NGUYEN,S.SMITH, AUTHOR 2 G.D.BRAYER,A.G.MAUK REVDAT 6 14-FEB-24 1NZ5 1 REMARK REVDAT 5 27-OCT-21 1NZ5 1 REMARK SEQADV LINK REVDAT 4 11-OCT-17 1NZ5 1 REMARK REVDAT 3 24-FEB-09 1NZ5 1 VERSN REVDAT 2 13-JAN-04 1NZ5 1 JRNL REVDAT 1 08-APR-03 1NZ5 0 JRNL AUTH C.L.HUNTER,R.MAURUS,M.R.MAUK,H.LEE,E.L.RAVEN,H.TONG, JRNL AUTH 2 N.NGUYEN,S.SMITH,G.D.BRAYER,A.G.MAUK JRNL TITL INTRODUCTION AND CHARACTERIZATION OF A FUNCTIONALLY LINKED JRNL TITL 2 METAL ION BINDING SITE AT THE EXPOSED HEME EDGE OF MYOGLOBIN JRNL REF PROC.NATL.ACAD.SCI.USA V. 100 3647 2003 JRNL REFN ISSN 0027-8424 JRNL PMID 12644706 JRNL DOI 10.1073/PNAS.0636702100 REMARK 2 REMARK 2 RESOLUTION. 1.70 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.70 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 77.0 REMARK 3 NUMBER OF REFLECTIONS : 11392 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) : 0.175 REMARK 3 R VALUE (WORKING SET) : NULL 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 : 1199 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 44 REMARK 3 SOLVENT ATOMS : 48 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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) : 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) : NULL ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL 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) : 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 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1NZ5 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 28-FEB-03. REMARK 100 THE DEPOSITION ID IS D_1000018374. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 298 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 : RIGAKU RU300 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IIC REMARK 200 INTENSITY-INTEGRATION SOFTWARE : R-AXIS REMARK 200 DATA SCALING SOFTWARE : R-AXIS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 11392 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.700 REMARK 200 RESOLUTION RANGE LOW (A) : 10.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 77.0 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.08300 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 35.06 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.89 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM SULFATE, PH 7.5, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 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 14.45000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 62.55000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 17.80000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 62.55000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 14.45000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 17.80000 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 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: 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 45 CA GLU A 45 C -0.474 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 GLN A 8 CB - CA - C ANGL. DEV. = 12.3 DEGREES REMARK 500 GLN A 8 CB - CG - CD ANGL. DEV. = 18.0 DEGREES REMARK 500 GLU A 27 OE1 - CD - OE2 ANGL. DEV. = 8.0 DEGREES REMARK 500 ARG A 31 CA - CB - CG ANGL. DEV. = 18.7 DEGREES REMARK 500 ARG A 31 CD - NE - CZ ANGL. DEV. = 9.3 DEGREES REMARK 500 ASP A 126 CB - CG - OD2 ANGL. DEV. = -5.4 DEGREES REMARK 500 ARG A 139 CG - CD - NE ANGL. DEV. = 14.8 DEGREES REMARK 500 ARG A 139 CD - NE - CZ ANGL. DEV. = 11.6 DEGREES REMARK 500 ARG A 139 NE - CZ - NH1 ANGL. DEV. = 4.0 DEGREES REMARK 500 ASP A 141 CB - CG - OD1 ANGL. DEV. = 9.0 DEGREES REMARK 500 TYR A 146 CB - CG - CD2 ANGL. DEV. = 4.3 DEGREES REMARK 500 TYR A 146 CB - CG - CD1 ANGL. DEV. = -5.6 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 ASP A 20 88.90 -156.80 REMARK 500 LYS A 96 -63.39 -96.99 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 ASP A 44 -12.11 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 MN A 300 MN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 45 OE1 REMARK 620 2 HIS A 113 NE2 165.4 REMARK 620 3 HEM A 154 O2D 111.6 79.9 REMARK 620 4 HOH A 298 O 67.1 103.4 97.4 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM A 154 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 93 NE2 REMARK 620 2 HEM A 154 NA 87.8 REMARK 620 3 HEM A 154 NB 88.6 88.4 REMARK 620 4 HEM A 154 NC 91.0 178.6 92.3 REMARK 620 5 HEM A 154 ND 90.3 91.4 178.9 87.9 REMARK 620 6 HOH A 155 O 174.3 97.9 91.7 83.2 89.4 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 MN A 300 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 154 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1WLA RELATED DB: PDB REMARK 900 RELATED ID: 1NZ2 RELATED DB: PDB REMARK 900 RELATED ID: 1NZ3 RELATED DB: PDB REMARK 900 RELATED ID: 1NZ4 RELATED DB: PDB DBREF 1NZ5 A 1 153 UNP P68082 MYG_HORSE 1 153 SEQADV 1NZ5 GLU A 45 UNP P68082 LYS 45 ENGINEERED MUTATION SEQADV 1NZ5 GLU A 63 UNP P68082 LYS 63 ENGINEERED MUTATION SEQRES 1 A 153 GLY LEU SER ASP GLY GLU TRP GLN GLN VAL LEU ASN VAL SEQRES 2 A 153 TRP GLY LYS VAL GLU ALA ASP ILE ALA GLY HIS GLY GLN SEQRES 3 A 153 GLU VAL LEU ILE ARG LEU PHE THR GLY HIS PRO GLU THR SEQRES 4 A 153 LEU GLU LYS PHE ASP GLU PHE LYS HIS LEU LYS THR GLU SEQRES 5 A 153 ALA GLU MET LYS ALA SER GLU ASP LEU LYS GLU HIS GLY SEQRES 6 A 153 THR VAL VAL LEU THR ALA LEU GLY GLY ILE LEU LYS LYS SEQRES 7 A 153 LYS GLY HIS HIS GLU ALA GLU LEU LYS PRO LEU ALA GLN SEQRES 8 A 153 SER HIS ALA THR LYS HIS LYS ILE PRO ILE LYS TYR LEU SEQRES 9 A 153 GLU PHE ILE SER ASP ALA ILE ILE HIS VAL LEU HIS SER SEQRES 10 A 153 LYS HIS PRO GLY ASP PHE GLY ALA ASP ALA GLN GLY ALA SEQRES 11 A 153 MET THR LYS ALA LEU GLU LEU PHE ARG ASN ASP ILE ALA SEQRES 12 A 153 ALA LYS TYR LYS GLU LEU GLY PHE GLN GLY HET MN A 300 1 HET HEM A 154 43 HETNAM MN MANGANESE (II) ION HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 MN MN 2+ FORMUL 3 HEM C34 H32 FE N4 O4 FORMUL 4 HOH *48(H2 O) HELIX 1 1 SER A 3 ALA A 19 1 17 HELIX 2 2 ASP A 20 HIS A 36 1 17 HELIX 3 3 HIS A 36 GLU A 41 1 6 HELIX 4 4 THR A 51 ALA A 57 1 7 HELIX 5 5 SER A 58 LYS A 77 1 20 HELIX 6 6 HIS A 82 LYS A 96 1 15 HELIX 7 7 PRO A 100 HIS A 119 1 20 HELIX 8 8 GLY A 124 LEU A 149 1 26 LINK OE1 GLU A 45 MN MN A 300 1555 1555 2.46 LINK NE2 HIS A 93 FE HEM A 154 1555 1555 2.23 LINK NE2 HIS A 113 MN MN A 300 1655 1555 2.14 LINK FE HEM A 154 O HOH A 155 1555 1555 2.22 LINK O2D HEM A 154 MN MN A 300 1555 1555 2.32 LINK O HOH A 298 MN MN A 300 1555 1555 2.24 SITE 1 AC1 6 ARG A 31 GLU A 45 HIS A 113 HEM A 154 SITE 2 AC1 6 HOH A 298 HOH A 299 SITE 1 AC2 21 THR A 39 LYS A 42 PHE A 43 GLU A 45 SITE 2 AC2 21 VAL A 68 SER A 92 HIS A 93 LYS A 96 SITE 3 AC2 21 HIS A 97 ILE A 99 TYR A 103 HIS A 113 SITE 4 AC2 21 HIS A 116 GLN A 128 HOH A 155 HOH A 171 SITE 5 AC2 21 HOH A 208 HOH A 214 HOH A 298 HOH A 299 SITE 6 AC2 21 MN A 300 CRYST1 28.900 35.600 125.100 90.00 90.00 90.00 P 21 21 21 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 0.034602 0.000000 0.000000 0.00000 SCALE2 0.000000 0.028090 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007994 0.00000