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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：P05877 New Search
14PDB entries
21Biological assembly
21chain/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
1ACY CRYSTAL STRUCTURE OF THE PRINCIPAL NEUTRALIZING SITE OF HIV-1 Deposited 1994-02-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 306–328（23 aa） Fragment：FRAGMENT (RESIDUES 308 - 332)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 3.00 Å
1AI1 HIV-1 V3 LOOP MIMIC Deposited 1996-11-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 306–328（23 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.5；pH 6.5
Resolution 2.80 Å
1F58 IGG1 FAB FRAGMENT (58.2) COMPLEX WITH 24-RESIDUE PEPTIDE (RESIDUES 308-333 OF HIV-1 GP120 (MN ISOLATE) WITH ALA TO AIB SUBSTITUTION AT POSITION 323 Deposited 1998-10-21 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 306–328（23 aa） Fragment：RESIDUES 308-332 FROM HIV-1 GP120
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.3；pH 6.3
Resolution 2.00 Å R-free 0.256
1K5M Crystal Structure of a Human Rhinovirus Type 14:Human Immunodeficiency Virus Type 1 V3 Loop Chimeric Virus MN-III-2 Deposited 2001-10-11 Assembly 1 Insufficient information Heteromer；Protein × 240 PDB declaration: 240-MERIC（240） Consistent with protein count
Chain B 314–325（12 aa）
Not recorded SPH SPHINGOSINE × 60 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；1.5 M ammonium formate and 0.15 M sodium HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å
1K5M Crystal Structure of a Human Rhinovirus Type 14:Human Immunodeficiency Virus Type 1 V3 Loop Chimeric Virus MN-III-2 Deposited 2001-10-11 Assembly 2 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 314–325（12 aa）
Not recorded SPH SPHINGOSINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；1.5 M ammonium formate and 0.15 M sodium HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å
1K5M Crystal Structure of a Human Rhinovirus Type 14:Human Immunodeficiency Virus Type 1 V3 Loop Chimeric Virus MN-III-2 Deposited 2001-10-11 Assembly 3 Insufficient information Heteromer；Protein × 20 PDB declaration: eicosameric（20） Consistent with protein count
Chain B 314–325（12 aa）
Not recorded SPH SPHINGOSINE × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；1.5 M ammonium formate and 0.15 M sodium HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å
1K5M Crystal Structure of a Human Rhinovirus Type 14:Human Immunodeficiency Virus Type 1 V3 Loop Chimeric Virus MN-III-2 Deposited 2001-10-11 Assembly 4 Insufficient information Heteromer；Protein × 24 PDB declaration: 24-meric（24） Consistent with protein count
Chain B 314–325（12 aa）
Not recorded SPH SPHINGOSINE × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；1.5 M ammonium formate and 0.15 M sodium HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å
1K5M Crystal Structure of a Human Rhinovirus Type 14:Human Immunodeficiency Virus Type 1 V3 Loop Chimeric Virus MN-III-2 Deposited 2001-10-11 Assembly 5 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 314–325（12 aa）
Not recorded SPH SPHINGOSINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；1.5 M ammonium formate and 0.15 M sodium HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å
1K5M Crystal Structure of a Human Rhinovirus Type 14:Human Immunodeficiency Virus Type 1 V3 Loop Chimeric Virus MN-III-2 Deposited 2001-10-11 Assembly 6 Insufficient information Heteromer；Protein × 60 PDB declaration: 60-meric（60） Consistent with protein count
Chain B 314–325（12 aa）
Not recorded SPH SPHINGOSINE × 15 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；298 K；1.5 M ammonium formate and 0.15 M sodium HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.70 Å
1NIZ NMR structure of a V3 (MN isolate) peptide bound to 447-52D, a human HIV-1 neutralizing antibody Deposited 2002-12-30 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 309–324（16 aa） Fragment：V3 loop (residues 309-324)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 5；308 K；Ionic strength (raw mmCIF value) 10mM；Pressure ambient
NMR measurement conditions pH 5；308 K；Ionic strength (raw mmCIF value) 10mM；Pressure ambient
NMR measurement conditions pH 5；308 K；Ionic strength (raw mmCIF value) 10mM；Pressure ambient
NMR sample composition U-15N; 10mM sodium acetate buffer pH=5 | 95% H2O/5% D2O
NMR sample composition U-15N,13C; 10mM sodium acetate buffer pH=5 | 95% H2O/5% D2O
NMR sample composition U-15N,13C; 10mM sodium acetate buffer pH=5 | 99% D2O
Resolution not provided
1NJ0 NMR structure of a V3 (MN isolate) peptide bound to 447-52D, a human HIV-1 neutralizing antibody Deposited 2002-12-30 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 309–324（16 aa） Fragment：V3 loop (residues 309-324)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 5；308 K；Ionic strength (raw mmCIF value) 10mM；Pressure ambient
NMR measurement conditions pH 5；308 K；Ionic strength (raw mmCIF value) 10mM；Pressure ambient
NMR measurement conditions pH 5；308 K；Ionic strength (raw mmCIF value) 10mM；Pressure ambient
NMR sample composition U-15N; 10mM sodium acetate buffer pH=5 | 95% H2O/5% D2O
NMR sample composition U-15N,13C; 10mM sodium acetate buffer pH=5 | 95% H2O/5% D2O
NMR sample composition U-15N,13C; 10mM sodium acetate buffer pH=5 | 99% D2O
Resolution not provided
2B0S Crystal structure analysis of anti-HIV-1 V3 Fab 2219 in complex with MN peptide Deposited 2005-09-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 308–325（18 aa） Fragment：residues 308-325
Not recorded EDO 1,2-ETHANEDIOL × 2 ACY ACETIC ACID × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；298 K；40% PEG 400, 0.2M potassium acetate, VAPOR DIFFUSION, SITTING DROP, temperature 298.0K
Resolution 2.30 Å R-free 0.267
2QSC Crystal structure analysis of anti-HIV-1 V3-Fab F425-B4e8 in complex with a V3-peptide Deposited 2007-07-30 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 309–323（15 aa） Fragment：Residues 301-326
Not recorded ZN ZINC ION × 4 CL CHLORIDE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；298 K；PEG 8000, pH 6.0, VAPOR DIFFUSION, temperature 298K
Resolution 2.80 Å R-free 0.264
3GO1 Crystal structure of anti-HIV-1 Fab 268-D in complex with V3 peptide MN Deposited 2009-03-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 309–322（14 aa）
Not recorded SO4 SULFATE ION × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；296.15 K；30% PEG 8000, 0.2M Ammonium Acetate, 0.1M Sodium Cacodylate pH 6.5, vapor diffusion, hanging drop, temperature 296.15K
Resolution 1.89 Å R-free 0.213
3MLW Crystal structure of anti-HIV-1 V3 Fab 1006-15D in complex with an MN V3 peptide Deposited 2010-04-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 306–328（23 aa）
Not recorded PO4 PHOSPHATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；296 K；20% PEG 3350, K dihydrogen phosphate, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Resolution 2.70 Å R-free 0.291
3MLW Crystal structure of anti-HIV-1 V3 Fab 1006-15D in complex with an MN V3 peptide Deposited 2010-04-18 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain Q 306–328（23 aa）
Not recorded PO4 PHOSPHATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；296 K；20% PEG 3350, K dihydrogen phosphate, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Resolution 2.70 Å R-free 0.291
3MLX Crystal structure of anti-HIV-1 V3 Fab 3074 in complex with an MN V3 peptide Deposited 2010-04-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 306–328（23 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；296 K；20% PEG 3350, 0.2 M NH4 citrate dibasic, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Resolution 1.90 Å R-free 0.228
3MLX Crystal structure of anti-HIV-1 V3 Fab 3074 in complex with an MN V3 peptide Deposited 2010-04-18 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain Q 306–328（23 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；296 K；20% PEG 3350, 0.2 M NH4 citrate dibasic, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Resolution 1.90 Å R-free 0.228
3UJI Crystal structure of anti-HIV-1 V3 Fab 2558 in complex with MN peptide Deposited 2011-11-07 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 306–328（23 aa） Fragment：unp residues 306-328
Not recorded CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 7.5；296 K；85mM Hepes-Na, 15% Glycerol, 17% PEG 4k, 8.5% Isopropanol, pH 7.5, EVAPORATION, temperature 296K
Resolution 1.60 Å R-free 0.194
6SH9 EngBF DARPin Fusion 4b D12 Deposited 2019-08-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 310–323（14 aa）
Not recorded MES 2-(N-MORPHOLINO)-ETHANESULFONIC ACID × 1 MN MANGANESE (II) ION × 4 MPD (4S)-2-METHYL-2,4-PENTANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；277.15 K；PEG 20,000 MPD MES sodium chloride manganese chloride
Resolution 2.40 Å R-free 0.193
9OP1 Cryo-EM structure of Candida albicans fluoride channel FEX in complex with Fab fragment Deposited 2025-05-16 Assembly 1 Insufficient information Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 670–686（17 aa） Fragment：residues 76-389,residues 76-389
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.05 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.