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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P00173 New Search
17PDB entries
17Biological assembly
17chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different ligand/ion Different experimental conditions

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
1AQA SOLUTION STRUCTURE OF REDUCED MICROSOMAL RAT CYTOCHROME B5, NMR, MINIMIZED AVERAGE STRUCTURE Deposited 1997-07-28 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa） Fragment：SOLUBLE DOMAIN
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；313 K
Resolution not provided
1AW3 THE SOLUTION NMR STRUCTURE OF OXIDIZED RAT MICROSOMAL CYTOCHROME B5, MINIMIZED AVERAGE STRUCTURE Deposited 1997-10-09 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa） Fragment：SOLUBLE DOMAIN
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；298 K
Resolution not provided
1AXX THE SOLUTION STRUCTURE OF OXIDIZED RAT MICROSOMAL CYTOCHROME B5, NMR, 19 STRUCTURES Deposited 1997-10-22 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa） Fragment：SOLUBLE DOMAIN
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；298 K；Ionic strength (raw mmCIF value) 1 mM PHOSPHATE；Pressure 1
Resolution not provided
1B5A RAT FERROCYTOCHROME B5 A CONFORMATION, NMR, 1 STRUCTURE Deposited 1998-04-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；313 K；Ionic strength (raw mmCIF value) 100；Pressure ambient
NMR sample composition [U-13C; U-15N] Cytochrome b5, 100 mM phosphate buffer, 0.5 mM TSP, pH 7.0, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
1B5B RAT FERROCYTOCHROME B5 B CONFORMATION, NMR, 1 STRUCTURE Deposited 1998-04-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；313 K；Ionic strength (raw mmCIF value) 100；Pressure ambient
NMR sample composition [U-13C; U-15N] Cytochrome b5, 100 mM phosphate buffer, 0.5 mM TSP, pH 7.0, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
1BFX THE SOLUTION NMR STRUCTURE OF THE B FORM OF OXIDIZED RAT MICROSOMAL CYTOCHROME B5, MINIMIZED AVERAGE STRUCTURE Deposited 1998-05-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–98（98 aa） Fragment：SOLUBLE DOMAIN
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；298 K；Ionic strength (raw mmCIF value) PHOSPHATE 1mM；Pressure 1
NMR sample composition H2O AND D2O
Resolution not provided
1BLV SOLUTION STRUCTURE OF OXIDIZED RAT MICROSOMAL CYTOCHROME B5 IN THE PRESENCE OF 2 M GUANIDINIUM CHLORIDE: MONITORING THE EARLY STEPS IN PROTEIN UNFOLDING Deposited 1998-07-21 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa） Fragment：SOLUBLE DOMAIN
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；298 K；Ionic strength (raw mmCIF value) PHOSPHATE BUFFER 100 mM PLUS 2 M GDMCL IN THE SAME BUFFER；Pressure 1
Resolution not provided
1I87 SOLUTION STRUCTURE OF THE WATER-SOLUBLE FRAGMENT OF RAT HEPATIC APOCYTOCHROME B5 Deposited 2001-03-12 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–98（98 aa） Fragment：WATER-SOLUBLE DOMAIN (RESIDUES 1-98)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.2；298 K；Ionic strength (raw mmCIF value) low；Pressure ambient
NMR sample composition 1 mM apocytochrome b5, 13C,15N | 90% H2O/10% D2O
NMR sample composition 1 mM apocytochrome b5, 15N | 90% H2O/10% D2O
NMR sample composition 2 mM apocytochrome b5 | 90% H2O/10% D2O
NMR sample composition 2 mM apocytochrome b5 | 100% D2O
Resolution not provided
1I8C SOLUTION STRUCTURE OF THE WATER-SOLUBLE FRAGMENT OF RAT HEPATIC APOCYTOCHROME B5 Deposited 2001-03-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–98（98 aa） Fragment：WATER-SOLUBLE DOMAIN (RESIDUES 1-98)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.2；298 K；Ionic strength (raw mmCIF value) low；Pressure ambient
NMR sample composition 1 mM apocytochrome b5, 13C,15N | 90% H2O/10% D2O
NMR sample composition 1 mM apocytochrome b5, 15N | 90% H2O/10% D2O
NMR sample composition 2 mM apocytochrome b5 | 90% H2O/10% D2O
NMR sample composition 2 mM apocytochrome b5 | 100% D2O
Resolution not provided
1IB7 SOLUTION STRUCTURE OF F35Y MUTANT OF RAT FERRO CYTOCHROME B5, A CONFORMATION, ENSEMBLE OF 20 STRUCTURES Deposited 2001-03-27 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa）
Mutation：F35Y HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；313 K；Ionic strength (raw mmCIF value) 1mM
NMR measurement conditions pH 7；313 K；Ionic strength (raw mmCIF value) 1mM
NMR measurement conditions pH 7；313 K；Ionic strength (raw mmCIF value) 1mM
NMR sample composition 2mM F35Y CYTOCHROME B5; 1mM PHOSPHATE BUFFER; PURGED WITH NITROGEN GAS AND REDUCED BY ADDING FEW GRAINS OF SODIUM DITHIONATE AND SEALED USING OXY-ACETYLENE TORCH; 0.05 mM TSP AS INTERNAL REFERENCE | 90% H2O/10% D2O
NMR sample composition 2mM F35Y CYTOCHROME B5; 1mM PHOSPHATE BUFFER; PURGED WITH NITROGEN GAS AND REDUCED BY ADDING FEW GRAINS OF SODIUM DITHIONATE AND SEALED USING OXY-ACETYLENE TORCH; 0.05 mM TSP AS INTERNAL REFERENCE | 90% H2O/10% D2O
NMR sample composition 2mM F35Y CYTOCHROME B5; 1mM PHOSPHATE BUFFER; PURGED WITH NITROGEN GAS AND REDUCED BY ADDING FEW GRAINS OF SODIUM DITHIONATE AND SEALED USING OXY-ACETYLENE TORCH; 0.05 mM TSP AS INTERNAL REFERENCE | 90% H2O/10% D2O
Resolution not provided
1IET APOCYTOCHROME B5, PH 6.2, 298 K, NMR, MINIMIZED AVERAGE STRUCTURE Deposited 1996-04-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–98（98 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.2；298 K
Resolution not provided
1IEU APOCYTOCHROME B5, PH 6.2, 298 K, NMR, 10 STRUCTURES Deposited 1996-04-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–98（98 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.2；298 K
Resolution not provided
1JEX SOLUTION STRUCTURE OF A67V MUTANT OF RAT FERRO CYTOCHROME B5 Deposited 2001-06-19 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa）
Mutation：A67V HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；313 K；Ionic strength (raw mmCIF value) 1 mM；Pressure ambient
NMR sample composition 2MM F35Y CYTOCHROME B5;1MM PHOSPHATE BUFFER; PURGED WITH NITROGEN GAS AND REDUCED BY ADDING FEW GRAINS OF SODIUM DITHIONATE AND SEALED USING OXY-ACETYLENE TORCH; 0.05 MM TSP AS INTERNAL REFERENCE | 90% H2O/10% D2O
Resolution not provided
1MNY Dimethyl propionate ester heme-containing cytochrome b5 Deposited 2002-09-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa） Fragment：soluble domain, RESIDUES 5-98
Not recorded HDM DIMETHYL PROPIONATE ESTER HEME × 1 SOLUTION NMR
NMR measurement conditions pH 7；298 K；Ionic strength (raw mmCIF value) 100 mM potassium phosphate
Resolution not provided
2AXX THE SOLUTION STRUCTURE OF OXIDIZED RAT MICROSOMAL CYTOCHROME B5, NMR, 21 STRUCTURES Deposited 1997-10-22 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–98（94 aa） Fragment：SOLUBLE DOMAIN
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 SOLUTION NMR
NMR measurement conditions pH 7；298 K；Ionic strength (raw mmCIF value) PHOSPHATE 1mM；Pressure 1
Resolution not provided
5XE4 NMR solution structure of the aromatic mutant H43W H67F cytochrome b5 Deposited 2017-03-31 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–99（98 aa） Fragment：UNP residues 2-99
Mutation：H43W, H63F, T77K No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7；283 K；Ionic strength (raw mmCIF value) 60；Pressure 101
NMR sample composition 0.5 mM [U-99% 15N] WF cytochrome b5, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 0.5 mM [U-13C; U-15N] WF cytochrome b5, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
5XEE NMR solution structure of the aromatic mutant H43F H67F cytochrome b5 Deposited 2017-04-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–99（98 aa） Fragment：UNP residues 2-99
Mutation：H43F, H67F, T77K No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7；283 K；Ionic strength (raw mmCIF value) 50；Pressure 101325
NMR sample composition 0.5 mM [U-99% 15N] FFcytb5, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 0.5 mM [U-13C; U-15N] FFcytb5, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 0.5 mM [U-13C; U-15N; U-2H] FFcytb5, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.