HEADER ELECTRON TRANSPORT (HEME PROTEIN) 24-JUN-85 1CY3 OBSLTE 15-OCT-94 1CY3 2CY3 TITLE CRYSTAL STRUCTURE AND ELECTRON TRANSFER PROPERTIES OF TITLE 2 CYTOCHROME $C=3= COMPND MOL_ID: 1; COMPND 2 MOLECULE:; COMPND 3 CHAIN: NULL; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1 KEYWDS ELECTRON TRANSPORT (HEME PROTEIN) EXPDTA X-RAY DIFFRACTION AUTHOR R.HASER,M.FREY,F.PAYAN REVDAT 4 15-OCT-94 1CY3 3 OBSLTE REVDAT 3 15-JAN-91 1CY3 1 HET REVDAT 2 25-APR-86 1CY3 1 REVDAT REVDAT 1 08-NOV-85 1CY3 0 JRNL AUTH M.PIERROT,R.HASER,M.FREY,F.PAYAN,J.-P.ASTIER JRNL TITL CRYSTAL STRUCTURE AND ELECTRON TRANSFER PROPERTIES JRNL TITL 2 OF CYTOCHROME C=3= JRNL REF J.BIOL.CHEM. V. 257 14341 1982 JRNL REFN ASTM JBCHA3 US ISSN 0021-9258 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.HASER,M.PIERROT,M.FREY,F.PAYAN,J.-P.ASTIER REMARK 1 TITL HAEM ORGANIZATION IN THE MULTIHAEM CYTOCHROME C=3= REMARK 1 EDIT M.BALABAN, J.L.SUSSMAN, W.TRAUB, A.YONATH, REMARK 1 EDIT 2 R.FELDMANN REMARK 1 REF STRUCTURAL ASPECTS OF 213 1981 REMARK 1 REF 2 RECOGNITION AND ASSEMBLY IN REMARK 1 REF 3 BIOLOGICAL MACROMOLECULES REMARK 1 PUBL BALABAN INTERNATIONAL SCIENCE SERVICES,REHOVOT REMARK 1 REFN ISBN 0-86689-004-1 REMARK 1 REFERENCE 2 REMARK 1 AUTH R.HASER REMARK 1 TITL STRUCTURAL APPROACH OF THE ELECTRON TRANSFER REMARK 1 TITL 2 PATHWAYS IN MULTIHEME CYTOCHROMES C=3= REMARK 1 REF BIOCHIMIE V. 63 945 1981 REMARK 1 REFN ASTM BICMBE FR ISSN 0300-9084 REMARK 1 REFERENCE 3 REMARK 1 AUTH R.HASER,M.PIERROT,M.FREY,F.PAYAN,J.P.ASTIER, REMARK 1 AUTH 2 M.BRUSCHI,J.LEGALL REMARK 1 TITL STRUCTURE AND SEQUENCE OF THE MULTIHAEM CYTOCHROME REMARK 1 TITL 2 C=3= REMARK 1 REF NATURE V. 282 806 1979 REMARK 1 REFN ASTM NATUAS UK ISSN 0028-0836 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 : 877 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 172 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 1CY3 COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 5 REMARK 5 1CY3 CORRECTION. INSERT MISSING REVDAT RECORD. 25-APR-86. REMARK 5 1CY3 REMARK 6 REMARK 6 1CY3 CORRECTION. STANDARDIZE FORMAT OF HET RECORDS. 15-JAN- REMARK 6 91. 1CY3 REMARK 7 REMARK 7 1CY3 CORRECTION. THIS ENTRY IS OBSOLETE. 15-OCT-94. 1CY3 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 (%): 56.35 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.82 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,1/3+Z REMARK 290 3555 -X+Y,-X,2/3+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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 21.48333 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 42.96667 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 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 CD LYS 60 O1A HEM 1 1.15 REMARK 500 CD LYS 60 CGA HEM 1 1.61 REMARK 500 CD LYS 60 O2A HEM 1 1.78 REMARK 500 NE2 HIS 67 FE HEM 2 1.90 REMARK 500 O PHE 88 SG CYS 92 1.90 REMARK 500 NE2 HIS 89 FE HEM 4 1.97 REMARK 500 NE2 HIS 49 FE HEM 2 1.98 REMARK 500 SD MET 16 O2A HEM 4 1.99 REMARK 500 NE2 HIS 115 FE HEM 4 2.00 REMARK 500 NE2 HIS 36 FE HEM 1 2.01 REMARK 500 SD MET 16 CD1 LEU 28 2.04 REMARK 500 NE2 HIS 39 FE HEM 3 2.04 REMARK 500 NE2 HIS 48 FE HEM 1 2.04 REMARK 500 OH TYR 8 O1A HEM 1 2.06 REMARK 500 CB ALA 18 C GLY 26 2.06 REMARK 500 NE2 HIS 96 FE HEM 3 2.07 REMARK 500 O THR 37 N HIS 39 2.13 REMARK 500 CD1 LEU 28 O2A HEM 4 2.17 REMARK 500 SG CYS 44 CMC HEM 1 2.18 REMARK 500 CG LYS 60 O1A HEM 1 2.18 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 NZ LYS 30 NZ LYS 82 3664 0.92 REMARK 500 CE LYS 101 O1D HEM 2 3564 1.67 REMARK 500 NZ LYS 103 CE LYS 79 3564 1.74 REMARK 500 O1A HEM 2 NZ LYS 100 2665 1.74 REMARK 500 NZ LYS 30 CE LYS 82 3664 1.83 REMARK 500 CE LYS 30 NZ LYS 82 3664 1.96 REMARK 500 CE LYS 101 CGD HEM 2 3564 2.05 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),F6.3) REMARK 500 REMARK 500 EXPECTED VALUES: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 HIS 49 CG HIS 49 ND1 0.452 REMARK 500 HIS 48 C HIS 49 N -0.482 REMARK 500 LYS 59 CA LYS 59 CB -0.565 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: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 LEU 28 C - N - CA ANGL. DEV. = 49.6 DEGREES REMARK 500 CYS 47 O - C - N ANGL. DEV. =-53.7 DEGREES REMARK 500 THR 62 O - C - N ANGL. DEV. =-61.1 DEGREES REMARK 500 PRO 105 O - C - N ANGL. DEV. =-62.8 DEGREES 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 M RES CSSEQI PSI PHI REMARK 500 ASP 2 -133.24 113.02 REMARK 500 TYR 8 99.79 121.10 REMARK 500 GLU 14 120.83 12.77 REMARK 500 LYS 21 -81.80 138.47 REMARK 500 ASP 23 -79.35 127.39 REMARK 500 ALA 27 -123.36 148.97 REMARK 500 HIS 36 -116.41 102.39 REMARK 500 THR 37 -98.85 31.57 REMARK 500 HIS 48 37.02 7.66 REMARK 500 THR 50 -92.14 52.28 REMARK 500 THR 63 -157.12 -29.39 REMARK 500 CYS 66 -122.53 -26.57 REMARK 500 ASP 74 -104.62 -160.00 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 6 ASP 7 146.23 REMARK 500 ALA 18 LYS 19 149.85 REMARK 500 LYS 60 CYS 61 -141.61 REMARK 500 CYS 61 THR 62 -31.26 REMARK 500 THR 62 THR 63 -87.16 REMARK 500 ASP 68 SER 69 -142.79 REMARK 500 GLU 71 PHE 72 98.07 REMARK 500 LYS 79 ASP 80 148.95 REMARK 500 HIS 89 THR 90 148.46 REMARK 500 THR 106 GLY 107 -93.66 REMARK 500 PRO 108 THR 109 -146.81 SEQRES 1 118 ALA ASP ALA PRO GLY ASP ASP TYR VAL ILE SER ALA PRO SEQRES 2 118 GLU GLY MET LYS ALA LYS PRO LYS GLY ASP LYS PRO GLY SEQRES 3 118 ALA LEU GLN LYS THR VAL PRO PHE PRO HIS THR LYS HIS SEQRES 4 118 ALA THR VAL GLU CYS VAL GLN CYS HIS HIS THR LEU GLU SEQRES 5 118 ALA ASP GLY GLY ALA VAL LYS LYS CYS THR THR SER GLY SEQRES 6 118 CYS HIS ASP SER LEU GLU PHE ARG ASP LYS ALA ASN ALA SEQRES 7 118 LYS ASP ILE LYS LEU VAL GLU SER ALA PHE HIS THR GLN SEQRES 8 118 CYS ILE ASP CYS HIS ALA LEU LYS LYS LYS ASP LYS LYS SEQRES 9 118 PRO THR GLY PRO THR ALA CYS GLY LYS CYS HIS THR THR SEQRES 10 118 ASN FTNOTE 1 THE TORSION ANGLE OMEGA BETWEEN THE FLAGGED RESIDUES FTNOTE 1 DEVIATES SIGNIFICANTLY FROM THE EXPECTED VALUE. NOTE THAT FTNOTE 1 THIS IS A PRELIMINARY DATA SET AND THESE VALUES ARE FTNOTE 1 SUBJECT TO CHANGE WITH FURTHER REFINEMENT. HET HEM 1 43 HET HEM 2 43 HET HEM 3 43 HET HEM 4 43 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 HEM 4(C34 H32 FE N4 O4) HELIX 1 H1 VAL 84 LYS 101 1 18 TURN 1 T1 PRO 13 MET 16 TURN 2 T2 HIS 36 HIS 39 TURN 3 T3 THR 37 ALA 40 TURN 4 T4 GLU 43 GLN 46 TURN 5 T5 GLN 46 HIS 49 TURN 6 T6 THR 50 ALA 53 TURN 7 T7 LEU 51 ASP 54 TURN 8 T8 GLY 65 ASP 68 TURN 9 T9 LYS 75 ALA 78 TURN 10 T10 ALA 76 LYS 79 TURN 11 T11 ALA 78 ILE 81 TURN 12 T12 ASP 80 LEU 83 TURN 13 T13 ILE 81 VAL 84 TURN 14 T14 GLY 112 HIS 115 CISPEP 1 ALA 27 LEU 28 0 6.82 CISPEP 2 LEU 83 VAL 84 0 15.23 CRYST1 43.720 43.720 64.450 90.00 90.00 120.00 P 31 3 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 0.022900 0.013200 0.000000 0.00000 SCALE2 0.000000 0.026400 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015500 0.00000