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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：O55774 New Search
17PDB entries
17Biological assembly
96chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion 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
4YDI Crystal structure of broad and potently neutralizing VRC01-class antibody Z258-VRC27.01, isolated from human donor Z258, in complex with HIV-1 gp120 from clade A strain Q23.17 Deposited 2015-02-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain G 43–122（80 aa） Fragment：UNP residues 43-122, 191-293, 315-482
Chain G 191–293（103 aa） Fragment：UNP residues 43-122, 191-293, 315-482
Chain G 315–482（168 aa） Fragment：UNP residues 43-122, 191-293, 315-482
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 13 SO4 SULFATE ION × 4 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；4% PEG 400, 1.9 M (NH4)2SO4, 0.1M Tris-HCl, pH 8.5
Resolution 3.45 Å R-free 0.276
7LLK Cryo-EM structure of Q23.17_DS-SOSIP in complex with Glycan276-Dependent Broadly Neutralizing Antibody 179NC75 Fab Deposited 2021-02-04 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 31–498（468 aa）
Chain E 31–498（468 aa）
Chain I 31–498（468 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 10 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot for 2.5 S before plunging
Resolution 4.80 Å
9BNL Cryo-EM structure of rhesus antibody 6070-a.01 in complex with HIV-1 Env trimer Q23.17 MD39 Deposited 2024-05-02 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 32–495（464 aa）
Chain B 510–651（142 aa）
Chain C 32–495（464 aa）
Chain E 32–495（464 aa）
Chain F 510–651（142 aa）
Chain G 510–651（142 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 20 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
9BTV Cryo-EM structure of rhesus antibody T646-a.01 in complex with HIV-1 Env trimer Q23.17 MD39 Deposited 2024-05-15 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 30–498（469 aa）
Chain B 502–654（153 aa）
Chain C 30–498（469 aa）
Chain E 30–498（469 aa）
Chain F 502–654（153 aa）
Chain G 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 19 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.48 Å
9DHW Q23.MD39 in Complex with Fabs from antibodies CH01 iGL and 35O22 Deposited 2024-09-04 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: 12-meric（12） Consistent with protein count
Chain A 31–497（467 aa）
Chain B 502–654（153 aa）
Chain C 31–497（467 aa）
Chain D 502–654（153 aa）
Chain G 31–497（467 aa）
Chain I 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 22 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；1X PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.35 Å
9DIM Q23.MD39 in Complex with Fab from antibody 35O22 Deposited 2024-09-05 Assembly 1 Other combination Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain A 31–497（467 aa）
Chain B 502–654（153 aa）
Chain C 31–497（467 aa）
Chain D 502–654（153 aa）
Chain G 31–497（467 aa）
Chain I 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 19 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；1X PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.19 Å
9NVV Cryo-EM structure of V2 apex germline-targeting HIV Env trimer Q23-APEX-GT2 Deposited 2025-03-21 Assembly 1 Other combination Homooligomer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain b 30–584（555 aa）
Chain c 502–654（153 aa）
Chain d 30–584（555 aa）
Chain e 502–654（153 aa）
Chain f 30–584（555 aa）
Chain g 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 32 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
9NVW Cryo-EM structure of rhesus antibody CH35-Apex1.08 in complex with HIV Env trimer Q23-APEX-GT2 Deposited 2025-03-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–507（478 aa）
Chain c 502–654（153 aa）
Chain d 30–507（478 aa）
Chain e 502–654（153 aa）
Chain f 30–507（478 aa）
Chain g 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 32 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9NVX Cryo-EM structure of rhesus antibody CI91-Apex1.01 in complex with HIV Env trimer Q23-APEX-GT2 Deposited 2025-03-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–507（478 aa）
Chain c 502–654（153 aa）
Chain d 30–507（478 aa）
Chain e 502–654（153 aa）
Chain f 30–507（478 aa）
Chain g 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 31 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
9NVY Cryo-EM structure of rhesus antibody CH70-Apex2.01 in complex with HIV Env trimer Q23-APEX-GT2 Deposited 2025-03-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–507（478 aa）
Chain c 502–654（153 aa）
Chain d 30–507（478 aa）
Chain e 502–654（153 aa）
Chain f 30–507（478 aa）
Chain g 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 32 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
9NVZ Cryo-EM structure of rhesus antibody CH70-Apex1.01 in complex with HIV Env trimer Q23-APEX-GT2 Deposited 2025-03-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–507（478 aa）
Chain c 502–654（153 aa）
Chain d 30–507（478 aa）
Chain e 502–654（153 aa）
Chain f 30–507（478 aa）
Chain g 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 27 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
9NW0 Cryo-EM structure of rhesus antibody CH42-Apex1.01 in complex with HIV Env trimer Q23-APEX-GT2 Deposited 2025-03-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–507（478 aa）
Chain c 502–654（153 aa）
Chain d 30–507（478 aa）
Chain e 502–654（153 aa）
Chain f 30–507（478 aa）
Chain g 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 30 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
9NW1 Cryo-EM structure of rhesus antibody CH42-Apex2.01 in complex with HIV Env trimer Q23-APEX-GT2 Deposited 2025-03-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–507（478 aa）
Chain c 502–654（153 aa）
Chain d 30–507（478 aa）
Chain e 502–654（153 aa）
Chain f 30–507（478 aa）
Chain g 502–654（153 aa）
Not recorded MAN alpha-D-mannopyranose × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 28 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
9Z9L Q23.MD39 in Complex with Fabs from antibodies CH01 and 35O22 Deposited 2025-11-18 Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 31–497（467 aa）
Chain B 502–654（153 aa）
Chain C 31–497（467 aa）
Chain D 502–654（153 aa）
Chain G 31–497（467 aa）
Chain I 502–654（153 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 20 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6；1X PBS
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.49 Å
9ZRX Cryo-EM structure of SHIV-elicited CE79-1571 Fab in complex with HIV Env trimer Q23-SCT27 Deposited 2025-12-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–497（468 aa）
Chain c 502–654（153 aa）
Chain d 30–497（468 aa）
Chain e 502–654（153 aa）
Chain f 30–497（468 aa）
Chain g 502–654（153 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY mmCIF provides none of the parsed conditions Resolution 3.30 Å
9ZRY Cryo-EM structure of SHIV-elicited CN81-2029 Fab in complex with HIV Env trimer Q23-SCT27 Deposited 2025-12-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–497（468 aa）
Chain c 502–654（153 aa）
Chain d 30–497（468 aa）
Chain e 502–654（153 aa）
Chain f 30–497（468 aa）
Chain g 502–654（153 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY mmCIF provides none of the parsed conditions Resolution 2.90 Å
9ZRZ Cryo-EM structure of SHIV-elicited CI93-1365 Fab in complex with HIV Env trimer Q23-SCT27 Deposited 2025-12-21 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain b 30–497（468 aa）
Chain c 502–654（153 aa）
Chain d 30–497（468 aa）
Chain e 502–654（153 aa）
Chain f 30–497（468 aa）
Chain g 502–654（153 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY mmCIF provides none of the parsed conditions Resolution 2.90 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.