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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：P26747 New Search
10PDB entries
22Biological assembly
154chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different experimental method Different experimental conditions Different structure-quality metrics

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
2M5S High-resolution NMR structure and cryo-EM imaging support multiple functional roles for the accessory I-domain of phage P22 coat protein Deposited 2013-03-05 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 223–345（123 aa） Fragment：;This domain has previously been called the 'extra-density domain' and 'telokin-like domain' in the literature based on cryo-EM models ;
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；310.15 K；Ionic strength (raw mmCIF value) 20；Pressure ambient
NMR sample composition 1.5 mM [U-100% 13C; U-100% 15N] protein, 20 mM sodium phosphate, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 1.5 mM [U-100% 13C; U-100% 15N] protein, 20 mM sodium phosphate, 1% H2O/99% D2O | 1% H2O/99% D2O
Resolution not provided
3IYH P22 procapsid coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 1 Protein homooligomer Homooligomer；Protein × 360 PDB declaration: 360-MERIC（360） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions blot 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 8.20 Å
3IYH P22 procapsid coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 2 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions blot 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 8.20 Å
3IYH P22 procapsid coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 3 Protein homooligomer Homooligomer；Protein × 30 PDB declaration: 30-meric（30） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions blot 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 8.20 Å
3IYH P22 procapsid coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 4 Protein homooligomer Homooligomer；Protein × 36 PDB declaration: 36-meric（36） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions blot 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 8.20 Å
3IYH P22 procapsid coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 5 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions blot 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 8.20 Å
3IYI P22 expanded head coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 1 Protein homooligomer Homooligomer；Protein × 420 PDB declaration: 420-meric（420） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions Blot for 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 9.10 Å
3IYI P22 expanded head coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 2 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions Blot for 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 9.10 Å
3IYI P22 expanded head coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 3 Protein homooligomer Homooligomer；Protein × 35 PDB declaration: 35-meric（35） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions Blot for 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 9.10 Å
3IYI P22 expanded head coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 4 Protein homooligomer Homooligomer；Protein × 42 PDB declaration: 42-meric（42） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions Blot for 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 9.10 Å
3IYI P22 expanded head coat protein structures reveal a novel mechanism for capsid maturation: Stability without auxiliary proteins or chemical cross-links Deposited 2009-12-14 Assembly 5 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 20 mM sodium phosphate buffer, pH = 7.6；pH 7.6；20 mM sodium phosphate buffer, pH = 7.6
cryo-EM vitrification conditions Blot for 2-3 seconds before plunging；89 K；Cryogen ETHANE
Resolution 9.10 Å
5UU5 Bacteriophage P22 mature virion capsid protein Deposited 2017-02-16 Assembly 1 Protein homooligomer Homooligomer；Protein × 420 PDB declaration: 420-meric（420） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；50 mM Tris, pH 7.6, 1 mM MgCl2, 25 mM NaCl
cryo-EM vitrification conditions Cryogen ETHANE；single blot, one second duration
Resolution 3.30 Å
5UU5 Bacteriophage P22 mature virion capsid protein Deposited 2017-02-16 Assembly 2 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；50 mM Tris, pH 7.6, 1 mM MgCl2, 25 mM NaCl
cryo-EM vitrification conditions Cryogen ETHANE；single blot, one second duration
Resolution 3.30 Å
5UU5 Bacteriophage P22 mature virion capsid protein Deposited 2017-02-16 Assembly 3 Protein homooligomer Homooligomer；Protein × 35 PDB declaration: 35-meric（35） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；50 mM Tris, pH 7.6, 1 mM MgCl2, 25 mM NaCl
cryo-EM vitrification conditions Cryogen ETHANE；single blot, one second duration
Resolution 3.30 Å
5UU5 Bacteriophage P22 mature virion capsid protein Deposited 2017-02-16 Assembly 4 Protein homooligomer Homooligomer；Protein × 42 PDB declaration: 42-meric（42） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；50 mM Tris, pH 7.6, 1 mM MgCl2, 25 mM NaCl
cryo-EM vitrification conditions Cryogen ETHANE；single blot, one second duration
Resolution 3.30 Å
5UU5 Bacteriophage P22 mature virion capsid protein Deposited 2017-02-16 Assembly 5 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；50 mM Tris, pH 7.6, 1 mM MgCl2, 25 mM NaCl
cryo-EM vitrification conditions Cryogen ETHANE；single blot, one second duration
Resolution 3.30 Å
8GN5 Designed pH-responsive P22 VLP Deposited 2022-08-23 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 4–428（425 aa）
Chain B 4–428（425 aa）
Chain C 4–428（425 aa）
Chain D 4–428（425 aa）
Mutation：S43H, E54H, E153H, N287H Mutation：S43H, E54H, E153H, N287H Mutation：S43H, E54H, E153H, N287H Mutation：S43H, E54H, E153H, N287H No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；PBS buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.02 Å
8I1T The asymmetric unit of P22 empty capsid Deposited 2023-01-13 Assembly 1 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å
8I1V The asymmetric unit of P22 procapsid Deposited 2023-01-13 Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric（14） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.60 Å
8U10 In situ cryo-EM structure of bacteriophage P22 gp1:gp4:gp5:gp10:gp9 N-term complex in conformation 1 at 3.2A resolution Deposited 2023-08-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 58 PDB declaration: 58-meric（58） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Chain H 1–430（430 aa）
Chain I 1–430（430 aa）
Chain J 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
8U11 In situ cryo-EM structure of bacteriophage P22 gp1:gp5:gp4: gp10: gp9 N-term complex in conformation 2 at 3.1A resolution Deposited 2023-08-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 58 PDB declaration: 58-meric（58） Consistent with protein count
Chain A 1–430（430 aa）
Chain B 1–430（430 aa）
Chain C 1–430（430 aa）
Chain D 1–430（430 aa）
Chain E 1–430（430 aa）
Chain F 1–430（430 aa）
Chain G 1–430（430 aa）
Chain H 1–430（430 aa）
Chain I 1–430（430 aa）
Chain J 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
9PGG Cryo-EM structure of bacteriophage P22 gp1-gp5-gp4 complex at 2.76 angstrom Deposited 2025-07-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 39 PDB declaration: 39-meric（39） Consistent with protein count
Chain Aa 1–430（430 aa）
Chain Ab 1–430（430 aa）
Chain Ac 1–430（430 aa）
Chain Ad 1–430（430 aa）
Chain Ae 1–430（430 aa）
Chain Af 1–430（430 aa）
Chain Ag 1–430（430 aa）
Chain Ah 1–430（430 aa）
Chain Ai 1–430（430 aa）
Chain Aj 1–430（430 aa）
Chain Ak 1–430（430 aa）
Chain Al 1–430（430 aa）
Chain Am 1–430（430 aa）
Chain An 1–430（430 aa）
Chain Ao 1–430（430 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.76 Å

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.