HEADER ELECTRON TRANSPORT 05-DEC-77 2B5C OBSLTE 15-JAN-91 2B5C 3B5C TITLE THE STRUCTURE OF CYTOCHROME $B=5= AT 2.0 ANGSTROMS TITLE 2 RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE:; COMPND 3 CHAIN: NULL; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1 KEYWDS ELECTRON TRANSPORT EXPDTA X-RAY DIFFRACTION AUTHOR F.S.MATHEWS,E.W.CZERWINSKI REVDAT 10 15-JAN-91 2B5C 3 OBSLTE REVDAT 9 31-MAY-84 2B5C 1 REMARK REVDAT 8 27-JAN-84 2B5C 1 REMARK REVDAT 7 30-SEP-83 2B5C 1 REVDAT REVDAT 6 01-MAR-82 2B5C 1 REMARK REVDAT 5 14-SEP-81 2B5C 1 REMARK REVDAT 4 20-APR-81 2B5C 1 TURN REVDAT 3 31-DEC-80 2B5C 1 REMARK REVDAT 2 24-JAN-78 2B5C 1 SOURCE REVDAT 1 16-JAN-78 2B5C 0 SPRSDE 16-JAN-78 2B5C 1B5C JRNL AUTH F.S.MATHEWS,P.ARGOS,M.LEVINE JRNL TITL THE STRUCTURE OF CYTOCHROME B=5= AT 2.0 ANGSTROMS JRNL TITL 2 RESOLUTION JRNL REF COLD SPRING HARBOR SYMP. V. 36 387 1972 JRNL REF 2 QUANT.BIOL. JRNL REFN ASTM CSHSAZ US ISSN 0091-7451 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH F.S.MATHEWS,E.W.CZERWINSKI REMARK 1 TITL CYTOCHROME B=5= AND CYTOCHROME B=5= REDUCTASE FROM REMARK 1 TITL 2 A CHEMICAL AND X-RAY DIFFRACTION VIEWPOINT REMARK 1 EDIT A.MARTINOSI REMARK 1 REF THE ENZYMES OF BIOLOGICAL V. 4 143 1976 REMARK 1 REF 2 MEMBRANES. ELECTRON REMARK 1 REF 3 TRANSPORT SYSTEMS AND REMARK 1 REF 4 RECEPTORS REMARK 1 PUBL PLENUM PRESS,NEW YORK REMARK 1 REFN ISBN 0-306-35034-3 REMARK 1 REFERENCE 2 REMARK 1 AUTH F.S.MATHEWS,M.LEVINE,P.ARGOS REMARK 1 TITL THE STRUCTURE OF CALF LIVER CYTOCHROME B=5= AT 2.8 REMARK 1 TITL 2 ANGSTROMS RESOLUTION REMARK 1 REF NATURE NEW BIOL. V. 233 15 1971 REMARK 1 REFN ASTM NNBYA7 UK ISSN 0369-4887 REMARK 1 REFERENCE 3 REMARK 1 EDIT R.J.FELDMANN REMARK 1 REF ATLAS OF MACROMOLECULAR 90 1976 REMARK 1 REF 2 STRUCTURE ON MICROFICHE REMARK 1 PUBL TRACOR JITCO INC.,ROCKVILLE,MD. REMARK 1 REFN ISBN 0-917934-01-6 REMARK 1 REFERENCE 4 REMARK 1 EDIT M.O.DAYHOFF REMARK 1 REF ATLAS OF PROTEIN SEQUENCE V. 5 49 1976 REMARK 1 REF 2 AND STRUCTURE,SUPPLEMENT 2 REMARK 1 PUBL NATIONAL BIOMEDICAL RESEARCH FOUNDATION, SILVER REMARK 1 PUBL 2 SPRING,MD. REMARK 1 REFN ISSN 0-912466-05-7 REMARK 2 REMARK 2 RESOLUTION. NULL ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : NULL REMARK 3 AUTHORS : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : NULL REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL 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 : NULL 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 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 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 : 692 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 43 REMARK 3 SOLVENT ATOMS : 0 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) : NULL REMARK 3 BOND ANGLES (DEGREES) : NULL REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : 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 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 2B5C COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 5 REMARK 5 2B5C THE CONFORMATION OF FERROCYTOCHROME B5 (REDUCED FORM) REMARK 5 IS 2B5C IDENTICAL TO THAT OF FERRICYTOCHROME B5 (OXIDIZED REMARK 5 FORM). 2B5C REMARK 6 REMARK 6 2B5C TWO COORDINATE SETS FOR THE HEME GROUP ARE GIVEN IN REMARK 6 THIS 2B5C ENTRY. THE SET DEFINED IN THE *HETATM* RECORDS IS REMARK 6 2B5C NON-PLANAR AND WAS OBTAINED BY VISUALLY FITTING A REMARK 6 PLANAR 2B5C HEME GROUP TO THE ELECTRON DENSITY FOLLOWED BY REMARK 6 BENDING IT 2B5C TO IMPROVE THE FIT (SEE REFERENCE 2 GIVEN REMARK 6 IN REMARK 1 2B5C ABOVE). THE FITTING WAS DONE ON THE MMS-4 REMARK 6 GRAPHICS 2B5C SYSTEM IN ST. LOUIS. THE COORDINATE SET GIVEN REMARK 6 IN THIS 2B5C REMARK IS FOR THE BEST FIT PLANAR HEME. IT IS REMARK 6 2B5C STEREOCHEMICALLY MORE CORRECT BUT DOES NOT FIT THE REMARK 6 2B5C DENSITY AS WELL. 2B5C 2B5C FE HEM 1 33.400 20.300 REMARK 6 34.310 1.00 0.00 2B5C CHA HEM 1 32.320 19.240 37.310 1.00 REMARK 6 0.00 2B5C CHB HEM 1 32.880 23.540 35.250 1.00 0.00 2B5C CHC REMARK 6 HEM 1 34.460 21.380 31.290 1.00 0.00 2B5C CHD HEM 1 33.900 REMARK 6 17.080 33.350 1.00 0.00 2B5C N A HEM 1 32.720 21.200 35.970 REMARK 6 1.00 0.00 2B5C C1A HEM 1 32.320 20.600 37.110 1.00 0.00 REMARK 6 2B5C C2A HEM 1 31.920 21.600 38.070 1.00 0.00 2B5C C3A HEM REMARK 6 1 32.060 22.800 37.530 1.00 0.00 2B5C C4A HEM 1 32.580 REMARK 6 22.560 36.170 1.00 0.00 2B5C CMA HEM 1 31.760 24.140 38.130 REMARK 6 1.00 0.00 2B5C CAA HEM 1 31.400 21.380 39.470 1.00 0.00 REMARK 6 2B5C CBA HEM 1 32.480 20.660 40.250 1.00 0.00 2B5C CGA HEM REMARK 6 1 31.920 20.380 41.670 1.00 0.00 2B5C O1A HEM 1 31.620 REMARK 6 19.900 42.170 1.00 0.00 2B5C O2A HEM 1 30.860 20.840 42.010 REMARK 6 1.00 0.00 2B5C N B HEM 1 33.620 22.100 33.430 1.00 0.00 REMARK 6 2B5C C1B HEM 1 33.360 23.340 33.990 1.00 0.00 2B5C C2B HEM REMARK 6 1 33.640 24.380 33.050 1.00 0.00 2B5C C3B HEM 1 34.120 REMARK 6 23.760 31.910 1.00 0.00 2B5C C4B HEM 1 34.080 22.340 32.170 REMARK 6 1.00 0.00 2B5C CMB HEM 1 33.500 25.860 33.210 1.00 0.00 REMARK 6 2B5C CAB HEM 1 34.540 24.480 30.670 1.00 0.00 2B5C CBB HEM REMARK 6 1 34.260 25.800 30.510 1.00 0.00 2B5C N C HEM 1 34.060 REMARK 6 19.420 32.650 1.00 0.00 2B5C C1C HEM 1 34.440 20.040 31.490 REMARK 6 1.00 0.00 2B5C C2C HEM 1 34.860 19.020 30.530 1.00 0.00 REMARK 6 2B5C C3C HEM 1 34.700 17.820 31.110 1.00 0.00 2B5C C4C HEM REMARK 6 1 34.200 18.080 32.450 1.00 0.00 2B5C CMC HEM 1 35.380 REMARK 6 19.260 29.130 1.00 0.00 2B5C CAC HEM 1 35.020 16.480 30.470 REMARK 6 1.00 0.00 2B5C CBC HEM 1 34.840 15.340 31.150 1.00 0.00 REMARK 6 2B5C N D HEM 1 33.160 18.520 35.190 1.00 0.00 2B5C C1D HEM REMARK 6 1 33.400 17.300 34.630 1.00 0.00 2B5C C2D HEM 1 33.100 REMARK 6 16.260 35.570 1.00 0.00 2B5C C3D HEM 1 32.660 16.860 36.690 REMARK 6 1.00 0.00 2B5C C4D HEM 1 32.680 18.300 36.450 1.00 0.00 REMARK 6 2B5C CMD HEM 1 33.280 14.760 35.390 1.00 0.00 2B5C CAD HEM REMARK 6 1 32.240 16.160 37.950 1.00 0.00 2B5C CBD HEM 1 33.240 REMARK 6 16.520 39.030 1.00 0.00 2B5C CGD HEM 1 34.580 15.960 38.610 REMARK 6 1.00 0.00 2B5C O1D HEM 1 34.700 14.820 38.390 1.00 0.00 REMARK 6 2B5C O2D HEM 1 35.540 16.700 38.510 1.00 0.00 2B5C 2B5C REMARK 7 REMARK 7 2B5C THE HEME GROUP IS BOUND TO THE PROTEIN BY COORDINATION REMARK 7 OF 2B5C THE IRON ATOM TO THE NE2 ATOMS OF HIS 39 AND HIS REMARK 7 63. 2B5C REMARK 8 REMARK 8 2B5C CORRECTION. REFORMAT SOURCE RECORDS TO MEET NEW 2B5C REMARK 8 SPECIFICATIONS. 24-JAN-78. 2B5C REMARK 9 REMARK 9 2B5C CORRECTION. STANDARDIZE FORMAT OF REMARK 2. 31-DEC-80. REMARK 9 2B5C REMARK 10 REMARK 10 2B5C CORRECTION. CORRECT RESIDUE IDENTIFICATION ON TURN 3 REMARK 10 2B5C RECORD. 20-APR-81. 2B5C REMARK 11 REMARK 11 2B5C CORRECTION. CORRECT JOURNAL NAME FOR REFERENCE 3. 2B5C REMARK 11 14-SEP-81. 2B5C REMARK 12 REMARK 12 2B5C CORRECTION. CHANGE CODEN FOR REFERENCE 2. 01-MAR-82. REMARK 12 2B5C REMARK 13 REMARK 13 2B5C CORRECTION. INSERT REVDAT RECORDS. 30-SEP-83. 2B5C REMARK 14 REMARK 14 2B5C CORRECTION. CORRECT ISSN FOR REFERENCE 3. 27-JAN-84. REMARK 14 2B5C REMARK 15 REMARK 15 2B5C CORRECTION. CORRECT ISSN FOR REFERENCE 1. 31-MAY-84. REMARK 15 2B5C REMARK 16 REMARK 16 2B5C CORRECTION. THIS ENTRY IS OBSOLETE. 15-JAN-91. 2B5C REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL 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: NULL 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 (%): 41.03 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.09 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL 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 1/2-X,-Y,1/2+Z REMARK 290 3555 -X,1/2+Y,1/2-Z REMARK 290 4555 1/2+X,1/2-Y,-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 32.27000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 14.95500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 23.02000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 14.95500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 32.27000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 23.02000 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 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT REMARK 300 WHICH CONSISTS OF 1 CHAIN(S). SEE REMARK 350 FOR REMARK 300 INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S). REMARK 350 REMARK 350 GENERATING THE BIOMOLECULE 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 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 1 REMARK 465 LYS 2 REMARK 465 THR 88 REMARK 465 LYS 89 REMARK 465 PRO 90 REMARK 465 SER 91 REMARK 465 GLU 92 REMARK 465 SER 93 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS(M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 GLN 11 OE1 NE2 REMARK 470 ASN 16 OD1 ND2 REMARK 470 ASN 17 OD1 ND2 REMARK 470 GLN 49 OE1 NE2 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 REMARK 500 NE2 HIS 63 FE HEM 1 1.78 REMARK 500 NE2 HIS 39 FE HEM 1 1.90 SEQRES 1 93 SER LYS ALA VAL LYS TYR TYR THR LEU GLU GLN ILE GLU SEQRES 2 93 LYS HIS ASN ASN SER LYS SER THR TRP LEU ILE LEU HIS SEQRES 3 93 TYR LYS VAL TYR ASP LEU THR LYS PHE LEU GLU GLU HIS SEQRES 4 93 PRO GLY GLY GLU GLU VAL LEU ARG GLU GLN ALA GLY GLY SEQRES 5 93 ASP ALA THR GLU ASP PHE GLU ASP VAL GLY HIS SER THR SEQRES 6 93 ASP ALA ARG GLU LEU SER LYS THR PHE ILE ILE GLY GLU SEQRES 7 93 LEU HIS PRO ASP ASP ARG SER LYS ILE THR LYS PRO SER SEQRES 8 93 GLU SER HET HEM 1 43 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 HEM C34 H32 FE N4 O4 HELIX 1 1 THR 8 HIS 15 1 8 HELIX 2 2 LEU 32 HIS 39 1 8 HELIX 3 3 GLU 43 GLN 49 1 7 HELIX 4 4 ALA 54 VAL 61 1 8 HELIX 5 5 SER 64 ILE 75 1 12 HELIX 6 6 HIS 80 ILE 87 1 8 SHEET 1 I 5 LYS 5 TYR 7 0 SHEET 2 I 5 PHE 74 HIS 80 1 O LYS 5 N GLU 78 SHEET 3 I 5 TYR 27 LEU 32 -1 N LEU 79 O TYR 27 SHEET 4 I 5 THR 21 LEU 25 -1 N LEU 32 O THR 21 SHEET 5 I 5 GLY 51 ALA 54 1 N GLY 51 O TRP 22 TURN 1 1 ASN 17 SER 20 TURN 2 2 SER 18 THR 21 TURN 3 3 ILE 24 TYR 27 TURN 4 4 LEU 25 LYS 28 TURN 5 5 HIS 39 GLY 42 TURN 6 6 GLN 49 GLY 52 CRYST1 64.540 46.040 29.910 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 0.015494 0.000000 0.000000 0.00000 SCALE2 0.000000 0.021720 0.000000 0.00000 SCALE3 0.000000 0.000000 0.033434 0.00000