1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 Wu, Y.B. Lu, J. Qian, C.M. Tang, W.X. Li, E.C. Wang, J.F. Wang, Y.H. Wang, W.H. Lu, J.X. Xie, Y. Huang, Z.X. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic 1 90.00 90.00 90.00 1.000 1.000 1.000 C3 H7 N O2 89.093 y ALANINE L-peptide linking C6 H15 N4 O2 1 175.209 y ARGININE L-peptide linking C4 H8 N2 O3 132.118 y ASPARAGINE L-peptide linking C4 H7 N O4 133.103 y ASPARTIC ACID L-peptide linking C5 H10 N2 O3 146.144 y GLUTAMINE L-peptide linking C5 H9 N O4 147.129 y GLUTAMIC ACID L-peptide linking C2 H5 N O2 75.067 y GLYCINE peptide linking C34 H32 Fe N4 O4 616.487 PROTOPORPHYRIN IX CONTAINING FE HEME non-polymer C6 H10 N3 O2 1 156.162 y HISTIDINE L-peptide linking C6 H13 N O2 131.173 y ISOLEUCINE L-peptide linking C6 H13 N O2 131.173 y LEUCINE L-peptide linking C6 H15 N2 O2 1 147.195 y LYSINE L-peptide linking C9 H11 N O2 165.189 y PHENYLALANINE L-peptide linking C5 H9 N O2 115.130 y PROLINE L-peptide linking C3 H7 N O3 105.093 y SERINE L-peptide linking C4 H9 N O3 119.119 y THREONINE L-peptide linking C11 H12 N2 O2 204.225 y TRYPTOPHAN L-peptide linking C9 H11 N O3 181.189 y TYROSINE L-peptide linking C5 H11 N O2 117.146 y VALINE L-peptide linking IX Eur.J.Biochem. EJBCAI 0262 0014-2956 268 1620 1630 10.1046/j.1432-1327.2001.02033.x 11248680 Solution structure of cytochrome b(5) mutant (E44/48/56A/D60A) and its interaction with cytochrome c. 2001 10.2210/pdb1f04/pdb pdb_00001f04 CHIRALITY ERROR AT CA ATOM OF ALA A 3 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 9257.262 CYTOCHROME B5 E44A, E48A, E56A, D60A 1 man polymer 616.487 PROTOPORPHYRIN IX CONTAINING FE 1 syn non-polymer no no AVKYYTLEEIQKHNNSKSTWLILHYKVYDLTKFLEEHPGGEAVLRAQAGGDATANFEAVGHSTDARELSKTFIIGELHPD DR AVKYYTLEEIQKHNNSKSTWLILHYKVYDLTKFLEEHPGGEAVLRAQAGGDATANFEAVGHSTDARELSKTFIIGELHPD DR A polypeptide(L) n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n cattle Bos Escherichia sample 9913 Bos taurus 562 Escherichia coli JM83 PLASMID PUC 19 database_2 pdbx_nmr_software pdbx_struct_assembly pdbx_struct_oper_list struct_conn struct_ref_seq_dif struct_site repository Initial release Version format compliance Version format compliance Data collection Database references Derived calculations 1 0 2000-06-21 1 1 2008-04-27 1 2 2011-07-13 1 3 2021-11-03 _database_2.pdbx_DOI _database_2.pdbx_database_accession _pdbx_nmr_software.name _struct_conn.ptnr1_auth_comp_id _struct_conn.ptnr1_auth_seq_id _struct_conn.ptnr1_label_asym_id _struct_conn.ptnr1_label_atom_id _struct_conn.ptnr1_label_comp_id _struct_conn.ptnr1_label_seq_id _struct_conn.ptnr2_auth_comp_id _struct_conn.ptnr2_auth_seq_id _struct_conn.ptnr2_label_asym_id _struct_conn.ptnr2_label_atom_id _struct_conn.ptnr2_label_comp_id _struct_conn.ptnr2_label_seq_id _struct_ref_seq_dif.details _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id RCSB Y RCSB 2000-05-14 REL REL HEM PROTOPORPHYRIN IX CONTAINING FE all calculated structures submitted 35 35 2D NOESY 2D NOESY DQF-COSY DQF-COSY TOCSY TOCSY 10 mM 7.0 1 atm 303 K DYNAMICS SIMULATED ANNEALING, RESTRAINED ENERGY MINIMIZATION; PSEUDOCONTACT SHIFTS WERE USED IN THE CALCULATION AND IN THE MINIMIZATION AS FURTHER NON-CLASSICAL CONSTRAINTS TORSION ANGLE MOLECULAR 6 mM cytochrome b5 mutant 1H 10 mM phosphate buffer , 90% H2O, 10% D2O 6 mM cytochrome b5 mutant 1H 10 mM phosphate buffer, D2O Gntert, Mumenthaler, Wthrich structure solution DYANA 5.0 Banci, Bertini, Cremonini, Gori Savellini, Luchinat, Wthrich, Gntert structure solution PSEUDODYANA Pearlman, Case, Caldwell, Ross, Cheatham, Ferguson, Seibel, Singh, Weiner, Kollman refinement Amber 5.0 Banci, Bertini, Gori Savellini, Romagnoli, Turano, Cremonini, Luchinat, Gary refinement PSEUDOREM 600 Bruker DMX HEM 201 2 HEM HEM 201 A ALA 3 n 1 ALA 3 A VAL 4 n 2 VAL 4 A LYS 5 n 3 LYS 5 A TYR 6 n 4 TYR 6 A TYR 7 n 5 TYR 7 A THR 8 n 6 THR 8 A LEU 9 n 7 LEU 9 A GLU 10 n 8 GLU 10 A GLU 11 n 9 GLU 11 A ILE 12 n 10 ILE 12 A GLN 13 n 11 GLN 13 A LYS 14 n 12 LYS 14 A HIS 15 n 13 HIS 15 A ASN 16 n 14 ASN 16 A ASN 17 n 15 ASN 17 A SER 18 n 16 SER 18 A LYS 19 n 17 LYS 19 A SER 20 n 18 SER 20 A THR 21 n 19 THR 21 A TRP 22 n 20 TRP 22 A LEU 23 n 21 LEU 23 A ILE 24 n 22 ILE 24 A LEU 25 n 23 LEU 25 A HIS 26 n 24 HIS 26 A TYR 27 n 25 TYR 27 A LYS 28 n 26 LYS 28 A VAL 29 n 27 VAL 29 A TYR 30 n 28 TYR 30 A ASP 31 n 29 ASP 31 A LEU 32 n 30 LEU 32 A THR 33 n 31 THR 33 A LYS 34 n 32 LYS 34 A PHE 35 n 33 PHE 35 A LEU 36 n 34 LEU 36 A GLU 37 n 35 GLU 37 A GLU 38 n 36 GLU 38 A HIS 39 n 37 HIS 39 A PRO 40 n 38 PRO 40 A GLY 41 n 39 GLY 41 A GLY 42 n 40 GLY 42 A GLU 43 n 41 GLU 43 A ALA 44 n 42 ALA 44 A VAL 45 n 43 VAL 45 A LEU 46 n 44 LEU 46 A ARG 47 n 45 ARG 47 A ALA 48 n 46 ALA 48 A GLN 49 n 47 GLN 49 A ALA 50 n 48 ALA 50 A GLY 51 n 49 GLY 51 A GLY 52 n 50 GLY 52 A ASP 53 n 51 ASP 53 A ALA 54 n 52 ALA 54 A THR 55 n 53 THR 55 A ALA 56 n 54 ALA 56 A ASN 57 n 55 ASN 57 A PHE 58 n 56 PHE 58 A GLU 59 n 57 GLU 59 A ALA 60 n 58 ALA 60 A VAL 61 n 59 VAL 61 A GLY 62 n 60 GLY 62 A HIS 63 n 61 HIS 63 A SER 64 n 62 SER 64 A THR 65 n 63 THR 65 A ASP 66 n 64 ASP 66 A ALA 67 n 65 ALA 67 A ARG 68 n 66 ARG 68 A GLU 69 n 67 GLU 69 A LEU 70 n 68 LEU 70 A SER 71 n 69 SER 71 A LYS 72 n 70 LYS 72 A THR 73 n 71 THR 73 A PHE 74 n 72 PHE 74 A ILE 75 n 73 ILE 75 A ILE 76 n 74 ILE 76 A GLY 77 n 75 GLY 77 A GLU 78 n 76 GLU 78 A LEU 79 n 77 LEU 79 A HIS 80 n 78 HIS 80 A PRO 81 n 79 PRO 81 A ASP 82 n 80 ASP 82 A ASP 83 n 81 ASP 83 A ARG 84 n 82 ARG 84 A author_defined_assembly 1 monomeric A HIS 39 A NE2 HIS 37 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B NA HEM 1_555 89.4 A HIS 39 A NE2 HIS 37 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B NB HEM 1_555 93.5 A HEM 201 B NA HEM 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B NB HEM 1_555 91.4 A HIS 39 A NE2 HIS 37 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B NC HEM 1_555 91.2 A HEM 201 B NA HEM 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B NC HEM 1_555 179.3 A HEM 201 B NB HEM 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B NC HEM 1_555 88.7 A HIS 39 A NE2 HIS 37 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B ND HEM 1_555 87.7 A HEM 201 B NA HEM 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B ND HEM 1_555 91.7 A HEM 201 B NB HEM 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B ND HEM 1_555 176.6 A HEM 201 B NC HEM 1_555 A HEM 201 B FE HEM 1_555 A HEM 201 B ND HEM 1_555 88.1 A HIS 39 A NE2 HIS 37 1_555 A HEM 201 B FE HEM 1_555 A HIS 63 A NE2 HIS 61 1_555 175.6 A HEM 201 B NA HEM 1_555 A HEM 201 B FE HEM 1_555 A HIS 63 A NE2 HIS 61 1_555 89.9 A HEM 201 B NB HEM 1_555 A HEM 201 B FE HEM 1_555 A HIS 63 A NE2 HIS 61 1_555 90.9 A HEM 201 B NC HEM 1_555 A HEM 201 B FE HEM 1_555 A HIS 63 A NE2 HIS 61 1_555 89.4 A HEM 201 B ND HEM 1_555 A HEM 201 B FE HEM 1_555 A HIS 63 A NE2 HIS 61 1_555 87.9 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 1_555 identity operation 0.0000000000 0.0000000000 0.0000000000 A O VAL 29 A O VAL 27 A N ILE 76 A N ILE 74 1 A CA ALA 3 WRONG HAND 2 A CA ALA 3 WRONG HAND 3 A CA ALA 3 WRONG HAND 5 A CA ALA 3 WRONG HAND 6 A CA ALA 3 WRONG HAND 8 A CA ALA 3 WRONG HAND 11 A CA ALA 3 WRONG HAND 12 A CA ALA 3 WRONG HAND 17 A CA ALA 3 WRONG HAND 18 A CA ALA 3 WRONG HAND 21 A CA ALA 3 WRONG HAND 25 A CA ALA 3 WRONG HAND 27 A CA ALA 3 WRONG HAND 30 A CA ALA 3 WRONG HAND 3 A A ALA VAL 3 4 143.63 11 A A ALA VAL 3 4 147.20 17 A A ALA VAL 3 4 141.53 18 A A ALA VAL 3 4 139.74 21 A A ALA VAL 3 4 148.52 25 A A ALA VAL 3 4 141.99 27 A A ALA VAL 3 4 145.25 2 A TYR 30 0.064 SIDE CHAIN 8 A TYR 30 0.129 SIDE CHAIN 9 A TYR 6 0.082 SIDE CHAIN 9 A TYR 27 0.109 SIDE CHAIN 10 A ARG 47 0.085 SIDE CHAIN 12 A TYR 27 0.077 SIDE CHAIN 25 A TYR 6 0.073 SIDE CHAIN 25 A TYR 7 0.076 SIDE CHAIN 27 A TYR 6 0.069 SIDE CHAIN 28 A TYR 27 0.069 SIDE CHAIN 29 A TYR 27 0.065 SIDE CHAIN 30 A TYR 27 0.070 SIDE CHAIN 31 A TYR 27 0.089 SIDE CHAIN 31 A TYR 30 0.096 SIDE CHAIN 32 A HIS 63 0.192 SIDE CHAIN 34 A ARG 68 0.078 SIDE CHAIN 8 -3.11 0.50 120.30 117.19 A A A NE CZ NH2 ARG ARG ARG 68 68 68 N 23 -6.09 0.90 118.30 112.21 A A A CB CG OD2 ASP ASP ASP 83 83 83 N 27 -5.50 0.90 118.30 112.80 A A A CB CG OD2 ASP ASP ASP 83 83 83 N 1 A ASN 16 -162.97 68.63 1 A ASN 17 -130.20 -66.88 1 A SER 18 -144.17 -66.21 1 A LYS 19 -90.63 -63.18 1 A SER 20 -52.24 107.31 1 A LYS 34 -96.68 38.89 1 A GLU 43 -53.50 94.66 1 A ALA 44 179.61 -69.85 1 A HIS 63 63.75 156.84 2 A ASN 16 -131.77 -44.57 2 A LYS 19 176.95 -51.41 2 A ASP 53 8.12 72.53 2 A VAL 61 -107.45 54.60 3 A ASN 16 -140.95 29.75 3 A SER 18 65.66 -67.49 3 A LYS 19 -158.39 -44.24 3 A SER 20 -46.10 99.85 3 A LEU 23 176.98 168.58 3 A LYS 34 -96.65 36.59 3 A PHE 35 -140.10 12.34 3 A GLU 43 -42.39 103.27 3 A ALA 44 170.68 -66.67 3 A HIS 63 67.18 123.42 4 A HIS 15 -113.41 67.62 4 A ASN 16 -154.32 63.53 4 A ASN 17 -149.00 -56.55 4 A SER 18 -172.76 -53.64 4 A HIS 63 54.45 89.77 5 A HIS 15 -102.79 62.69 5 A ASN 16 -177.00 62.68 5 A ASN 17 -173.11 84.74 5 A LYS 19 -160.44 -82.15 5 A LYS 34 -97.77 32.49 5 A PHE 35 -140.76 14.98 5 A HIS 39 -54.84 107.32 5 A ASP 53 -158.60 35.56 6 A ASN 16 -160.95 66.05 6 A ASN 17 -155.28 -65.71 6 A SER 18 -160.37 -48.15 6 A ASP 53 8.57 70.69 7 A SER 18 57.13 -142.92 7 A SER 20 -56.14 108.67 7 A LEU 23 177.65 168.35 7 A PHE 35 -146.55 11.81 7 A GLU 43 -65.78 81.91 7 A ALA 44 -163.41 -71.05 7 A HIS 63 62.27 103.89 8 A SER 18 -63.57 70.27 8 A LYS 19 -176.45 -40.00 8 A TYR 27 67.52 -0.23 8 A SER 64 -69.85 -178.91 8 A THR 65 -61.82 -72.01 9 A LYS 5 173.80 118.94 9 A ASN 17 70.32 44.19 9 A SER 18 -138.22 -82.01 9 A ASP 53 -4.58 80.81 9 A HIS 63 62.10 110.17 10 A ASN 16 -154.43 13.57 10 A ASN 17 -165.40 99.43 10 A SER 18 74.32 -56.54 10 A SER 20 -177.47 139.76 10 A LEU 23 179.66 170.27 10 A LYS 34 -91.26 31.05 10 A PHE 35 -141.24 13.66 10 A HIS 39 -49.48 104.26 10 A VAL 61 -109.34 64.32 11 A ASN 16 -163.78 35.90 11 A ASN 17 -160.00 81.54 11 A LYS 19 -141.03 -79.12 11 A LEU 23 179.64 168.90 11 A LYS 34 -90.95 34.77 11 A PHE 35 -141.39 11.02 11 A VAL 61 -101.96 75.29 12 A ASN 16 -117.23 57.94 12 A ASN 17 89.98 -44.51 12 A LYS 19 -127.02 -62.78 12 A LEU 32 -100.93 -90.10 12 A THR 33 66.45 -61.20 12 A HIS 39 -59.06 106.57 12 A ASP 53 21.38 67.08 13 A ASN 16 -178.52 48.50 13 A ASN 17 -167.25 49.79 13 A SER 18 165.47 -124.05 13 A TYR 27 66.64 -3.05 13 A LEU 32 -102.82 -83.84 13 A THR 33 61.00 -67.57 13 A ASP 53 26.25 58.68 13 A HIS 63 67.22 96.38 13 A SER 64 -57.82 174.08 14 A LEU 23 171.53 170.72 14 A LEU 32 -104.60 -91.99 14 A THR 33 68.44 -59.21 14 A SER 64 -59.86 172.18 15 A VAL 4 65.65 148.44 15 A SER 18 65.72 -75.41 15 A LYS 19 -154.52 -42.11 15 A LEU 23 176.31 167.04 15 A LYS 34 -97.39 34.49 15 A PHE 35 -143.54 15.53 15 A HIS 39 -50.99 108.34 16 A LYS 19 175.05 -77.90 16 A ASP 53 -168.01 69.61 17 A ASN 17 81.67 71.04 17 A SER 18 -172.90 -58.13 17 A HIS 26 69.62 63.66 17 A LEU 32 -102.79 -94.49 17 A THR 33 65.70 -58.95 17 A GLU 43 -58.05 91.89 17 A ALA 44 -169.94 -68.96 17 A ASP 53 -164.34 63.33 18 A ASN 16 -168.36 50.41 18 A ASN 17 173.73 85.73 18 A SER 18 75.15 -54.84 18 A SER 20 178.27 146.46 18 A LEU 23 176.92 169.26 18 A LEU 32 -101.63 -95.46 18 A THR 33 67.47 -58.49 19 A LYS 19 -157.71 -50.16 19 A LEU 23 178.01 169.51 19 A LEU 32 -103.38 -91.10 19 A THR 33 67.87 -60.13 19 A GLU 43 -56.29 94.54 19 A ALA 44 179.53 -66.30 20 A HIS 15 -105.42 73.97 20 A ASN 16 -162.26 43.07 20 A ASN 17 -160.40 -71.02 20 A LYS 19 -174.94 -45.85 20 A SER 20 -41.42 100.81 20 A LEU 23 179.09 169.37 21 A HIS 15 -104.63 75.84 21 A ASN 16 -167.39 59.91 21 A ASN 17 -154.32 -77.08 21 A SER 18 -163.75 55.76 21 A LYS 19 -139.03 -59.22 21 A LEU 23 179.32 168.56 21 A VAL 61 -110.48 72.80 22 A SER 18 -62.62 73.11 22 A LYS 19 -167.79 -46.21 22 A SER 20 -152.66 77.82 22 A THR 21 -68.94 88.71 22 A LEU 23 174.84 169.37 22 A PRO 40 -69.69 85.90 22 A GLU 43 -59.07 104.91 22 A ALA 44 176.40 -68.11 22 A ALA 54 -141.21 27.35 23 A SER 18 -65.20 76.54 23 A LYS 19 176.69 -42.99 23 A LEU 32 -111.05 -88.67 23 A THR 33 67.59 -53.18 23 A ASP 53 -158.31 67.31 24 A HIS 15 -103.42 69.55 24 A ASN 16 -155.68 36.17 24 A ASN 17 -96.08 -64.87 24 A SER 18 -140.67 -64.76 24 A LYS 19 -88.25 -79.87 24 A SER 20 -37.64 107.16 24 A HIS 39 -55.44 108.59 24 A ASP 53 -167.90 79.49 24 A ALA 54 -141.23 19.59 25 A HIS 15 -109.80 79.80 25 A ASN 16 -161.23 66.30 25 A ASN 17 -143.57 -60.82 25 A SER 18 -177.70 -44.36 25 A LEU 23 179.27 170.68 25 A LEU 32 -105.28 -93.21 25 A THR 33 66.30 -59.84 25 A GLU 43 -51.55 93.05 25 A ALA 44 -165.59 -74.53 25 A HIS 63 68.17 132.48 26 A HIS 15 -87.45 -139.45 26 A SER 18 -167.10 -59.80 26 A LYS 19 -91.21 -61.31 26 A ASP 53 -160.93 89.57 26 A ALA 54 -142.72 12.40 27 A ASN 16 -97.61 -66.65 27 A ASN 17 -156.73 67.83 27 A SER 18 -160.82 -74.20 27 A LEU 23 178.78 169.35 27 A LEU 32 -104.97 -94.27 27 A THR 33 67.29 -58.10 27 A HIS 63 62.33 147.12 28 A LYS 5 -160.10 116.00 28 A ASN 16 -133.00 -80.21 28 A SER 18 178.21 -63.28 28 A LYS 19 -95.00 -66.12 28 A LEU 23 174.81 169.32 28 A LYS 34 -97.00 31.62 28 A PHE 35 -140.37 13.40 28 A GLU 43 -69.07 84.90 28 A ALA 44 -174.17 -60.96 29 A HIS 15 -109.36 77.75 29 A ASN 16 -161.35 56.18 29 A ASN 17 -160.14 47.04 29 A SER 18 74.46 -46.47 29 A LEU 23 174.28 169.41 29 A LEU 32 -105.06 -92.78 29 A THR 33 67.30 -59.68 30 A VAL 4 52.15 -172.37 30 A HIS 15 -105.15 74.83 30 A ASN 16 -158.28 54.35 30 A ASN 17 -153.51 50.12 30 A SER 18 74.31 -55.87 30 A LEU 23 176.16 169.13 30 A LYS 34 -97.05 32.59 30 A PHE 35 -143.48 16.39 30 A GLU 43 -42.67 103.23 30 A ALA 44 173.52 -63.88 31 A SER 18 65.95 -75.83 31 A LYS 19 -143.85 -46.08 31 A HIS 63 61.29 101.23 32 A SER 20 -161.38 95.76 32 A LEU 32 -108.32 -91.92 32 A THR 33 66.40 -58.53 32 A GLU 43 -134.22 -57.32 32 A VAL 61 -109.31 52.96 32 A HIS 63 -104.07 -86.70 33 A HIS 15 -85.25 -137.87 33 A ASN 17 -155.64 83.51 33 A LYS 19 -165.73 -85.64 33 A LYS 34 -91.79 32.90 33 A ASP 53 -165.39 77.49 34 A HIS 15 -115.83 66.58 34 A SER 18 72.14 -60.73 34 A LEU 32 -112.78 -94.90 34 A THR 33 65.69 -57.63 34 A ASP 53 29.36 59.52 35 A LYS 5 -171.56 125.49 35 A ASN 16 -140.25 56.23 35 A LYS 19 -179.27 -35.45 35 A LEU 23 174.25 168.67 35 A LEU 32 -100.19 -92.72 35 A THR 33 66.12 -61.05 35 A GLU 43 -53.38 95.44 35 A ALA 44 173.82 -58.78 35 A HIS 63 58.80 178.51 SOLUTION STRUCTURE OF OXIDIZED BOVINE MICROSOMAL CYTOCHROME B5 MUTANT (E44A, E48A, E56A, D60A) AND ITS INTERACTION WITH CYTOCHROME C 1 N N 2 N N A THR 8 A THR 6 HELX_P A LYS 14 A LYS 12 1 1 7 A LEU 32 A LEU 30 HELX_P A LEU 36 A LEU 34 5 2 5 A ALA 44 A ALA 42 HELX_P A ALA 50 A ALA 48 1 3 7 A ALA 54 A ALA 52 HELX_P A GLY 62 A GLY 60 1 4 9 A SER 64 A SER 62 HELX_P A PHE 74 A PHE 72 1 5 11 metalc 2.010 A HIS 39 A NE2 HIS 37 1_555 A HEM 201 B FE HEM 1_555 metalc 1.996 A HIS 63 A NE2 HIS 61 1_555 A HEM 201 B FE HEM 1_555 ELECTRON TRANSPORT CYTOCHROME B5, PROTEIN RECOGNITION, SOLUTION STRUCTURE, PARAMAGNETIC NMR, ELECTRON TRANSPORT CYB5_BOVIN UNP 1 P00171 7 88 1F04 3 84 P00171 A 1 1 82 1 GLU engineered mutation ALA 44 1F04 A P00171 UNP 48 42 1 GLU engineered mutation ALA 48 1F04 A P00171 UNP 52 46 1 GLU engineered mutation ALA 56 1F04 A P00171 UNP 60 54 1 ASP engineered mutation ALA 60 1F04 A P00171 UNP 64 58 2 anti-parallel A LYS 28 A LYS 26 A TYR 30 A TYR 28 A ILE 75 A ILE 73 A GLU 78 A GLU 76 BINDING SITE FOR RESIDUE HEM A 201 A HEM 201 Software 13 A LEU 25 A LEU 23 13 1_555 A LEU 32 A LEU 30 13 1_555 A HIS 39 A HIS 37 13 1_555 A PRO 40 A PRO 38 13 1_555 A VAL 45 A VAL 43 13 1_555 A LEU 46 A LEU 44 13 1_555 A GLN 49 A GLN 47 13 1_555 A PHE 58 A PHE 56 13 1_555 A VAL 61 A VAL 59 13 1_555 A HIS 63 A HIS 61 13 1_555 A SER 64 A SER 62 13 1_555 A LEU 70 A LEU 68 13 1_555 A SER 71 A SER 69 13 1_555 1 P 1