HEADER ELECTRON TRANSPORT 22-OCT-97 2AXX TITLE THE SOLUTION STRUCTURE OF OXIDIZED RAT MICROSOMAL CYTOCHROME B5, NMR, TITLE 2 21 STRUCTURES CAVEAT 2AXX INCORRECT CHIRALITY ON CA ATOM OF ASP1 OF MODELS 2,3,5,10, CAVEAT 2 2AXX 11,14,16,18 COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYTOCHROME B5; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: SOLUBLE DOMAIN; COMPND 5 ENGINEERED: YES; COMPND 6 OTHER_DETAILS: FROM RAT MICROSOMAL MEMBRANE SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 3 ORGANISM_COMMON: NORWAY RAT; SOURCE 4 ORGANISM_TAXID: 10116; SOURCE 5 ORGAN: LIVER; SOURCE 6 ORGANELLE: MICROSOME; SOURCE 7 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 9 EXPRESSION_SYSTEM_STRAIN: NM522; SOURCE 10 EXPRESSION_SYSTEM_CELLULAR_LOCATION: CYTOPLASM; SOURCE 11 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 12 EXPRESSION_SYSTEM_PLASMID: PUC 13 KEYWDS CYTOCHROME B5, PROTEIN RECOGNITION, ELECTRON TRANSFER, SOLUTION KEYWDS 2 STRUCTURE, PARAMAGNETIC NMR, ELECTRON TRANSPORT EXPDTA SOLUTION NMR NUMMDL 21 AUTHOR F.ARNESANO,L.BANCI,I.BERTINI,I.C.FELLI REVDAT 3 09-FEB-11 2AXX 1 HETATM REVDAT 2 24-FEB-09 2AXX 1 VERSN REVDAT 1 04-MAR-98 2AXX 0 JRNL AUTH F.ARNESANO,L.BANCI,I.BERTINI,I.C.FELLI JRNL TITL THE SOLUTION STRUCTURE OF OXIDIZED RAT MICROSOMAL CYTOCHROME JRNL TITL 2 B5. JRNL REF BIOCHEMISTRY V. 37 173 1998 JRNL REFN ISSN 0006-2960 JRNL PMID 9425037 JRNL DOI 10.1021/BI971896W REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : AMBER REMARK 3 AUTHORS : PEARLMAN,CASE,CALDWELL,ROSS,CHEATHAM, FERGUSON, REMARK 3 SEIBEL,SINGH,WEINER,KOLLMAN REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: PSEUDOREM (BANCI,BERTINI, GORI REMARK 3 SAVELLINI,ROMAGNOLI,TURANO,CREMONINI,LUCHINAT, GRAY) ALSO WAS REMARK 3 USED. REMARK 4 REMARK 4 2AXX COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 298 REMARK 210 PH : 7 REMARK 210 IONIC STRENGTH : PHOSPHATE 1MM REMARK 210 PRESSURE : 1 ATM REMARK 210 SAMPLE CONTENTS : NULL REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : NOESY; TOCSY; 1D NOE REMARK 210 SPECTROMETER FIELD STRENGTH : 800 MHZ REMARK 210 SPECTROMETER MODEL : AVANCE 800 MHZ REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : DYANA, PSEUDYANA, AMBER REMARK 210 METHOD USED : TORSION ANGLE MOLECULAR DYNAMICS REMARK 210 SIMULATED ANNEALING, RESTRAINED REMARK 210 ENERGY MINIMIZATION; REMARK 210 PSEUDOCONTACT SHIFTS WERE USED IN REMARK 210 THE CALCULATION AND IN THE REMARK 210 MINIMIZATION AS FURTHER NON- REMARK 210 CLASSICAL CONSTRAINTS REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 40 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 21 REMARK 210 CONFORMERS, SELECTION CRITERIA : FAMILY OF MINIMIZED STRUCTURES REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL REMARK 210 REMARK 210 REMARK: NULL REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS. 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: CLOSE CONTACTS 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 HZ3 LYS A 28 OE1 GLU A 78 1.63 REMARK 500 OD1 ASP A 17 H SER A 18 1.66 REMARK 500 OD1 ASP A 31 HG1 THR A 33 1.70 REMARK 500 OD1 ASP A 31 H THR A 33 1.70 REMARK 500 H HIS A 26 OG1 THR A 55 1.75 REMARK 500 HE1 TRP A 22 OD2 ASP A 31 1.75 REMARK 500 O ASP A 17 HH12 ARG A 47 1.75 REMARK 500 O THR A 55 H GLU A 59 1.76 REMARK 500 O PRO A 81 H SER A 85 1.77 REMARK 500 O ARG A 68 HG SER A 71 1.77 REMARK 500 OD1 ASP A 53 H THR A 55 1.77 REMARK 500 O HIS A 80 H ARG A 84 1.81 REMARK 500 O PHE A 35 H HIS A 39 1.82 REMARK 500 O GLU A 11 H LYS A 14 1.83 REMARK 500 O LYS A 5 H GLU A 78 1.83 REMARK 500 O TRP A 22 H GLY A 51 1.83 REMARK 500 O SER A 71 H TYR A 74 1.84 REMARK 500 HD1 HIS A 39 O GLY A 42 1.84 REMARK 500 O ILE A 12 H HIS A 15 1.85 REMARK 500 O GLU A 43 H ARG A 47 1.85 REMARK 500 NE2 HIS A 26 HH12 ARG A 68 1.87 REMARK 500 O TYR A 7 H HIS A 80 1.87 REMARK 500 O VAL A 23 H TYR A 30 1.87 REMARK 500 O HIS A 39 H GLY A 41 1.88 REMARK 500 O LEU A 9 H GLN A 13 1.88 REMARK 500 O GLU A 56 H ASP A 60 1.88 REMARK 500 O LEU A 32 H PHE A 35 1.89 REMARK 500 O THR A 8 H ILE A 12 1.89 REMARK 500 O ASP A 3 HZ1 LYS A 5 1.89 REMARK 500 O ALA A 54 H PHE A 58 1.89 REMARK 500 H SER A 64 O1A HEM A 96 1.90 REMARK 500 HH TYR A 30 OG SER A 71 1.90 REMARK 500 O GLU A 43 H LEU A 46 1.90 REMARK 500 H VAL A 29 O GLY A 77 1.90 REMARK 500 O PHE A 58 H GLY A 62 1.90 REMARK 500 O ALA A 67 H SER A 71 1.91 REMARK 500 O HIS A 39 H GLY A 42 1.93 REMARK 500 OG1 THR A 21 HH11 ARG A 47 1.98 REMARK 500 O PHE A 58 HD1 HIS A 63 1.98 REMARK 500 O THR A 65 H GLU A 69 2.02 REMARK 500 O LYS A 72 H ILE A 75 2.02 REMARK 500 O VAL A 29 H ILE A 76 2.02 REMARK 500 O LEU A 25 H LYS A 28 2.07 REMARK 500 O GLU A 44 H GLU A 48 2.09 REMARK 500 H ILE A 24 O GLY A 52 2.09 REMARK 500 H TYR A 7 O GLU A 78 2.10 REMARK 500 H VAL A 23 O TYR A 30 2.12 REMARK 500 O VAL A 29 H GLY A 77 2.14 REMARK 500 O ASP A 83 H LYS A 86 2.14 REMARK 500 O SER A 64 H ARG A 68 2.19 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 12 ASP A 1 CB - CA - C ANGL. DEV. = 18.8 DEGREES REMARK 500 12 ASP A 1 N - CA - C ANGL. DEV. = -19.4 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 1 ASP A 3 -85.18 -147.88 REMARK 500 1 LYS A 5 63.32 63.19 REMARK 500 1 GLN A 13 0.83 -64.48 REMARK 500 1 HIS A 15 76.08 -106.17 REMARK 500 1 LYS A 16 31.23 -145.53 REMARK 500 1 SER A 20 72.99 -154.74 REMARK 500 1 ILE A 24 75.50 -105.90 REMARK 500 1 HIS A 26 -90.98 65.97 REMARK 500 1 HIS A 27 31.57 -146.13 REMARK 500 1 GLN A 49 -64.14 -101.83 REMARK 500 1 ALA A 50 171.96 56.48 REMARK 500 1 ASP A 53 88.41 -69.95 REMARK 500 1 HIS A 63 156.16 67.75 REMARK 500 1 ILE A 87 100.20 -38.14 REMARK 500 1 THR A 93 -69.88 -130.86 REMARK 500 2 VAL A 4 -122.38 -86.83 REMARK 500 2 HIS A 15 43.25 -81.02 REMARK 500 2 LYS A 19 66.78 -161.72 REMARK 500 2 SER A 20 99.50 83.75 REMARK 500 2 HIS A 27 75.87 57.35 REMARK 500 2 LYS A 28 123.95 176.41 REMARK 500 2 LEU A 32 -102.31 -97.82 REMARK 500 2 THR A 33 -67.37 66.38 REMARK 500 2 GLN A 49 -67.00 -100.35 REMARK 500 2 ALA A 50 168.55 57.35 REMARK 500 2 HIS A 63 135.45 64.84 REMARK 500 2 SER A 85 -56.42 -172.08 REMARK 500 2 LYS A 86 48.91 -85.06 REMARK 500 3 LYS A 2 -142.80 -77.27 REMARK 500 3 VAL A 4 -141.27 -87.00 REMARK 500 3 LYS A 5 71.95 -167.15 REMARK 500 3 LYS A 16 -59.55 -131.45 REMARK 500 3 ASP A 17 -154.82 55.16 REMARK 500 3 HIS A 27 18.74 56.02 REMARK 500 3 PRO A 40 77.53 -69.71 REMARK 500 3 ALA A 50 134.38 -36.48 REMARK 500 3 ASP A 53 99.59 -65.79 REMARK 500 3 HIS A 63 73.81 51.48 REMARK 500 3 ASP A 66 -84.81 -146.77 REMARK 500 3 LYS A 86 41.23 -166.36 REMARK 500 3 ILE A 87 94.01 -64.11 REMARK 500 3 ALA A 88 -159.11 -106.61 REMARK 500 3 SER A 91 -70.85 -65.33 REMARK 500 4 LYS A 2 -144.06 50.38 REMARK 500 4 ASP A 3 113.60 82.83 REMARK 500 4 VAL A 4 -96.78 -82.15 REMARK 500 4 LYS A 5 61.94 -151.12 REMARK 500 4 SER A 18 47.47 -76.41 REMARK 500 4 LYS A 19 70.53 -160.12 REMARK 500 4 SER A 20 117.57 86.89 REMARK 500 REMARK 500 THIS ENTRY HAS 274 RAMACHANDRAN OUTLIERS. REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 ASP A 1 LYS A 2 4 -130.99 REMARK 500 ASP A 1 LYS A 2 12 -138.17 REMARK 500 ASP A 1 LYS A 2 16 143.61 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 1 TYR A 30 0.09 SIDE CHAIN REMARK 500 1 TYR A 74 0.11 SIDE CHAIN REMARK 500 2 TYR A 30 0.08 SIDE CHAIN REMARK 500 2 TYR A 74 0.10 SIDE CHAIN REMARK 500 3 TYR A 7 0.07 SIDE CHAIN REMARK 500 3 TYR A 74 0.07 SIDE CHAIN REMARK 500 4 TYR A 74 0.09 SIDE CHAIN REMARK 500 5 TYR A 74 0.08 SIDE CHAIN REMARK 500 6 TYR A 74 0.08 SIDE CHAIN REMARK 500 8 TYR A 30 0.11 SIDE CHAIN REMARK 500 8 TYR A 74 0.10 SIDE CHAIN REMARK 500 10 TYR A 74 0.07 SIDE CHAIN REMARK 500 11 TYR A 6 0.09 SIDE CHAIN REMARK 500 11 TYR A 74 0.11 SIDE CHAIN REMARK 500 12 TYR A 30 0.10 SIDE CHAIN REMARK 500 12 TYR A 74 0.09 SIDE CHAIN REMARK 500 12 ARG A 84 0.09 SIDE CHAIN REMARK 500 13 TYR A 6 0.09 SIDE CHAIN REMARK 500 13 TYR A 30 0.10 SIDE CHAIN REMARK 500 13 ARG A 47 0.09 SIDE CHAIN REMARK 500 13 TYR A 74 0.08 SIDE CHAIN REMARK 500 14 TYR A 74 0.07 SIDE CHAIN REMARK 500 15 ARG A 47 0.09 SIDE CHAIN REMARK 500 15 TYR A 74 0.10 SIDE CHAIN REMARK 500 16 TYR A 74 0.10 SIDE CHAIN REMARK 500 17 TYR A 7 0.10 SIDE CHAIN REMARK 500 17 TYR A 30 0.11 SIDE CHAIN REMARK 500 17 ARG A 47 0.09 SIDE CHAIN REMARK 500 17 TYR A 74 0.07 SIDE CHAIN REMARK 500 18 TYR A 6 0.11 SIDE CHAIN REMARK 500 19 TYR A 6 0.10 SIDE CHAIN REMARK 500 19 TYR A 74 0.08 SIDE CHAIN REMARK 500 20 TYR A 7 0.08 SIDE CHAIN REMARK 500 20 TYR A 30 0.08 SIDE CHAIN REMARK 500 20 ARG A 47 0.09 SIDE CHAIN REMARK 500 20 TYR A 74 0.11 SIDE CHAIN REMARK 500 21 ARG A 47 0.10 SIDE CHAIN REMARK 500 21 TYR A 74 0.09 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CHIRAL CENTERS REMARK 500 REMARK 500 UNEXPECTED CONFIGURATION OF THE FOLLOWING CHIRAL REMARK 500 CENTER(S) USING IMPROPER CA--C--CB--N CHIRALITY REMARK 500 FOR AMINO ACIDS AND C1'--O4'--N1(N9)--C2' FOR REMARK 500 NUCLEIC ACIDS OR EQUIVALENT ANGLE REMARK 500 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,A1,6X,F5.1,6X,A1,10X,A1,3X,A16) REMARK 500 REMARK 500 M RES CSSEQI IMPROPER EXPECTED FOUND DETAILS REMARK 500 2 ASP A 1 -35.0 L D WRONG HAND REMARK 500 3 ASP A 1 -34.7 L D WRONG HAND REMARK 500 5 ASP A 1 -34.1 L D WRONG HAND REMARK 500 10 ASP A 1 -34.9 L D WRONG HAND REMARK 500 11 ASP A 1 -34.5 L D WRONG HAND REMARK 500 12 ASP A 1 52.2 L L OUTSIDE RANGE REMARK 500 14 ASP A 1 -35.0 L D WRONG HAND REMARK 500 16 ASP A 1 -32.1 L D WRONG HAND REMARK 500 18 ASP A 1 -34.9 L D WRONG HAND 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 1 HEM A 96 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 39 NE2 REMARK 620 2 HEM A 96 NA 89.7 REMARK 620 3 HEM A 96 NB 94.0 88.2 REMARK 620 4 HEM A 96 NC 90.6 176.8 88.6 REMARK 620 5 HEM A 96 ND 86.3 92.7 179.0 90.5 REMARK 620 6 HIS A 63 NE2 173.7 92.1 92.2 88.0 87.6 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: NUL REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: HEME SITE. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 96 DBREF 2AXX A 1 94 UNP P00173 CYB5_RAT 5 98 SEQRES 1 A 94 ASP LYS ASP VAL LYS TYR TYR THR LEU GLU GLU ILE GLN SEQRES 2 A 94 LYS HIS LYS ASP SER LYS SER THR TRP VAL ILE LEU HIS SEQRES 3 A 94 HIS LYS VAL TYR ASP LEU THR LYS PHE LEU GLU GLU HIS SEQRES 4 A 94 PRO GLY GLY GLU GLU VAL LEU ARG GLU GLN ALA GLY GLY SEQRES 5 A 94 ASP ALA THR GLU ASN PHE GLU ASP VAL GLY HIS SER THR SEQRES 6 A 94 ASP ALA ARG GLU LEU SER LYS THR TYR ILE ILE GLY GLU SEQRES 7 A 94 LEU HIS PRO ASP ASP ARG SER LYS ILE ALA LYS PRO SER SEQRES 8 A 94 GLU THR LEU HET HEM A 96 73 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 HEM C34 H32 FE N4 O4 HELIX 1 1 THR A 8 LYS A 14 1 7 HELIX 2 2 THR A 33 HIS A 39 5 7 HELIX 3 3 GLY A 42 ALA A 50 1 9 HELIX 4 4 ALA A 54 GLY A 62 1 9 HELIX 5 5 SER A 64 TYR A 74 1 11 HELIX 6 6 PRO A 81 ILE A 87 1 7 SHEET 1 A 4 THR A 21 LEU A 25 0 SHEET 2 A 4 LYS A 28 LEU A 32 -1 N TYR A 30 O VAL A 23 SHEET 3 A 4 ILE A 75 GLU A 78 -1 N GLY A 77 O VAL A 29 SHEET 4 A 4 LYS A 5 TYR A 7 1 N TYR A 7 O GLU A 78 LINK FE HEM A 96 NE2 HIS A 39 1555 1555 1.98 LINK FE HEM A 96 NE2 HIS A 63 1555 1555 1.99 SITE 1 NUL 2 HIS A 39 HIS A 63 SITE 1 AC1 14 LEU A 25 LEU A 32 PHE A 35 HIS A 39 SITE 2 AC1 14 PRO A 40 GLY A 41 VAL A 45 LEU A 46 SITE 3 AC1 14 ASN A 57 PHE A 58 HIS A 63 SER A 64 SITE 4 AC1 14 ALA A 67 SER A 71 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 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 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 MODEL 1