1LA6 - Header Asymmetric Unit

HEADER OXYGEN STORAGE/TRANSPORT 28-MAR-02 1LA6

TITLE THE CRYSTAL STRUCTURE OF TREMATOMUS NEWNESI HEMOGLOBIN IN A TITLE 2 PARTIAL HEMICHROME STATE

COMPND MOL_ID: 1; COMPND 2 MOLECULE: HEMOGLOBIN ALPHA-1 CHAIN; COMPND 3 CHAIN: A; COMPND 4 MOL_ID: 2; COMPND 5 MOLECULE: HEMOGLOBIN BETA-1/2 CHAIN; COMPND 6 CHAIN: B

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: TREMATOMUS NEWNESI; SOURCE 3 ORGANISM_COMMON: DUSKY NOTOTHEN; SOURCE 4 ORGANISM_TAXID: 35730; SOURCE 5 MOL_ID: 2; SOURCE 6 ORGANISM_SCIENTIFIC: TREMATOMUS NEWNESI; SOURCE 7 ORGANISM_COMMON: DUSKY NOTOTHEN; SOURCE 8 ORGANISM_TAXID: 35730

KEYWDS HEMICHROME, BISHISTIDINE COMPLEX, OXYGEN STORAGE/TRANSPORT KEYWDS 2 COMPLEX

EXPDTA X-RAY DIFFRACTION

AUTHOR A.RICCIO,L.VITAGLIANO,G.DI PRISCO,A.ZAGARI,L.MAZZARELLA

REVDAT 2 24-FEB-09 1LA6 1 VERSN REVDAT 1 31-JUL-02 1LA6 0

JRNL AUTH A.RICCIO,L.VITAGLIANO,G.DI PRISCO,A.ZAGARI, JRNL AUTH 2 L.MAZZARELLA JRNL TITL THE CRYSTAL STRUCTURE OF A TETRAMERIC HEMOGLOBIN JRNL TITL 2 IN A PARTIAL HEMICHROME STATE JRNL REF PROC.NATL.ACAD.SCI.USA V. 99 9801 2002 JRNL REFN ISSN 0027-8424 JRNL PMID 12093902 JRNL DOI 10.1073/PNAS.132182099

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH A.RICCIO,L.VITAGLIANO,G.DI PRISCO,A.ZAGARI, REMARK 1 AUTH 2 L.MAZZARELLA REMARK 1 TITL LIGANDED AND UNLIGANDED FORMS OF ANTARCTIC FISH REMARK 1 TITL 2 HAEMOGLOBINS IN POLYETHYLENE GLYCOL: REMARK 1 TITL 3 CRYSTALLIZATION OF AN R-STATE HAEMICHROME REMARK 1 TITL 4 INTERMEDIATE REMARK 1 REF ACTA CRYSTALLOGR. V. 57 1144 2001 REMARK 1 REFN ISSN 0365-110X REMARK 1 DOI 10.1107/S0907444901007739 REMARK 1 REFERENCE 2 REMARK 1 AUTH L.MAZZARELLA,R.D'AVINO,G.DI PRISCO,C.SAVINO, REMARK 1 AUTH 2 L.VITAGLIANO,P.C.E.MOODY,A.ZAGARI REMARK 1 TITL CRYSTAL STRUCTURE OF TREMATOMUS NEWNESI REMARK 1 TITL 2 HAEMOGLOBIN RE-OPENS THE ROOT EFFECT QUESTION REMARK 1 REF J.MOL.BIOL. V. 287 897 1999 REMARK 1 REFN ISSN 0022-2836 REMARK 1 DOI 10.1006/JMBI.1999.2632

REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 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) : 12.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 23191 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) : 0.179 REMARK 3 FREE R VALUE : 0.212 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 2280 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2154 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 88 REMARK 3 SOLVENT ATOMS : 71 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 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) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.45 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 19.70 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.44 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : ISOTROPIC 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 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL

REMARK 4 REMARK 4 1LA6 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-APR-02. REMARK 100 THE RCSB ID CODE IS RCSB015788.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 30-MAR-00 REMARK 200 TEMPERATURE (KELVIN) : 293 REMARK 200 PH : 7.6 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 : MIRRORS REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MACSCIENCE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 27020 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 12.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 92.8 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.07700 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL 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) : 2.15 REMARK 200 COMPLETENESS FOR SHELL (%) : 87.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.35000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> 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: PDB ENTRY 1T1N REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 63.68 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.39 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MPEG 5000, SODIUM ACETATE, PH 7.6, REMARK 280 FREE INTERFACE DIFFUSION, TEMPERATURE 293K

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 44.92650 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 44.09500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 44.92650 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 44.09500 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 TETRAMER GENERATED FROM THE REMARK 300 DIMER IN THE ASYMMETRIC UNIT BY THE 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: TETRAMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, 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 350 BIOMT1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 0.00000

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 SER B 43 REMARK 465 GLY B 44 REMARK 465 PHE B 45 REMARK 465 GLY B 46 REMARK 465 ASN B 47 REMARK 465 LEU B 48 REMARK 465 TYR B 49 REMARK 465 ASN B 50 REMARK 465 ALA B 51 REMARK 465 GLU B 52 REMARK 465 GLY B 53 REMARK 465 GLN B 144 REMARK 465 TYR B 145 REMARK 465 HIS B 146

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 76 86.64 -157.29 REMARK 500 SER B 93 -75.22 -77.21 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 B 147 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 92 NE2 REMARK 620 2 HIS B 63 NE2 165.1 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM A 143 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 88 NE2 REMARK 620 2 CMO A 144 C 168.9 REMARK 620 3 CMO A 144 O 164.4 5.6 REMARK 620 N 1 2

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 143 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CMO A 144 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM B 147

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1T1N RELATED DB: PDB REMARK 900 PDB-ID 1T1N CONTAINS THE SAME PROTEIN FULLY COMPLEXED WITH REMARK 900 CO

DBREF 1LA6 A 1 142 UNP P45718 HBA1_TRENE 1 142 DBREF 1LA6 B 1 146 UNP P45720 HBB_TRENE 1 146

SEQRES 1 A 143 ACE SER LEU SER ASP LYS ASP LYS ALA ALA VAL ARG ALA SEQRES 2 A 143 LEU TRP SER LYS ILE GLY LYS SER SER ASP ALA ILE GLY SEQRES 3 A 143 ASN ASP ALA LEU SER ARG MET ILE VAL VAL TYR PRO GLN SEQRES 4 A 143 THR LYS ILE TYR PHE SER HIS TRP PRO ASP VAL THR PRO SEQRES 5 A 143 GLY SER PRO ASN ILE LYS ALA HIS GLY LYS LYS VAL MET SEQRES 6 A 143 GLY GLY ILE ALA LEU ALA VAL SER LYS ILE ASP ASP LEU SEQRES 7 A 143 LYS THR GLY LEU MET GLU LEU SER GLU GLN HIS ALA TYR SEQRES 8 A 143 LYS LEU ARG VAL ASP PRO SER ASN PHE LYS ILE LEU ASN SEQRES 9 A 143 HIS CYS ILE LEU VAL VAL ILE SER THR MET PHE PRO LYS SEQRES 10 A 143 GLU PHE THR PRO GLU ALA HIS VAL SER LEU ASP LYS PHE SEQRES 11 A 143 LEU SER GLY VAL ALA LEU ALA LEU ALA GLU ARG TYR ARG SEQRES 1 B 146 VAL GLU TRP THR ASP LYS GLU ARG SER ILE ILE SER ASP SEQRES 2 B 146 ILE PHE SER HIS MET ASP TYR ASP ASP ILE GLY PRO LYS SEQRES 3 B 146 ALA LEU SER ARG CYS LEU VAL VAL TYR PRO TRP THR GLN SEQRES 4 B 146 ARG TYR PHE SER GLY PHE GLY ASN LEU TYR ASN ALA GLU SEQRES 5 B 146 GLY ILE MET SER ASN ALA ASN VAL ALA ALA HIS GLY ILE SEQRES 6 B 146 LYS VAL LEU HIS GLY LEU ASP ARG GLY MET LYS ASN MET SEQRES 7 B 146 ASP ASN ILE ALA ASP ALA TYR THR ASP LEU SER THR LEU SEQRES 8 B 146 HIS SER GLU LYS LEU HIS VAL ASP PRO ASP ASN PHE LYS SEQRES 9 B 146 LEU LEU SER ASP CYS ILE THR ILE VAL LEU ALA ALA LYS SEQRES 10 B 146 MET GLY HIS ALA PHE THR ALA GLU THR GLN GLY ALA PHE SEQRES 11 B 146 GLN LYS PHE LEU ALA ALA VAL VAL SER ALA LEU GLY LYS SEQRES 12 B 146 GLN TYR HIS

HET ACE A 0 3 HET HEM A 143 43 HET CMO A 144 2 HET HEM B 147 43

HETNAM ACE ACETYL GROUP HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM CMO CARBON MONOXIDE

HETSYN HEM HEME

FORMUL 1 ACE C2 H4 O FORMUL 3 HEM 2(C34 H32 FE N4 O4) FORMUL 4 CMO C O FORMUL 6 HOH *69(H2 O)

HELIX 1 1 SER A 3 GLY A 18 1 16 HELIX 2 2 SER A 20 TYR A 36 1 17 HELIX 3 3 PRO A 37 SER A 44 5 8 HELIX 4 4 SER A 53 LYS A 73 1 21 HELIX 5 5 ASP A 76 LEU A 81 1 6 HELIX 6 6 LEU A 81 TYR A 90 1 10 HELIX 7 7 ASP A 95 SER A 97 5 3 HELIX 8 8 ASN A 98 PHE A 114 1 17 HELIX 9 9 THR A 119 GLU A 139 1 21 HELIX 10 10 ARG A 140 ARG A 142 5 3 HELIX 11 11 THR B 4 HIS B 17 1 14 HELIX 12 12 ASP B 19 TYR B 35 1 17 HELIX 13 13 PRO B 36 PHE B 42 5 7 HELIX 14 14 ASN B 57 ASN B 77 1 21 HELIX 15 15 ASN B 80 TYR B 85 1 6 HELIX 16 16 TYR B 85 LYS B 95 1 11 HELIX 17 17 PRO B 100 GLY B 119 1 20 HELIX 18 18 HIS B 120 PHE B 122 5 3 HELIX 19 19 THR B 123 LYS B 143 1 21

LINK FE HEM B 147 NE2 HIS B 92 1555 1555 2.00 LINK FE HEM B 147 NE2 HIS B 63 1555 1555 2.00 LINK FE HEM A 143 NE2 HIS A 88 1555 1555 2.06 LINK C ACE A 0 N SER A 1 1555 1555 1.33 LINK FE HEM A 143 C CMO A 144 1555 1555 1.87 LINK FE HEM A 143 O CMO A 144 1555 1555 2.98

SITE 1 AC1 13 TYR A 42 HIS A 45 HIS A 59 LYS A 62 SITE 2 AC1 13 GLN A 87 HIS A 88 LEU A 92 VAL A 94 SITE 3 AC1 13 ASN A 98 PHE A 99 LEU A 102 ASN A 103 SITE 4 AC1 13 CMO A 144 SITE 1 AC2 3 HIS A 59 VAL A 63 HEM A 143 SITE 1 AC3 11 TYR B 41 PHE B 42 HIS B 63 LYS B 66 SITE 2 AC3 11 LEU B 91 HIS B 92 LEU B 96 ASN B 102 SITE 3 AC3 11 PHE B 103 LEU B 141 HOH B 269

CRYST1 89.853 88.190 55.142 90.00 97.79 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 0.011130 0.000000 0.001520 0.00000

SCALE2 0.000000 0.011340 0.000000 0.00000

SCALE3 0.000000 0.000000 0.018300 0.00000