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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：O43719 New Search
10PDB entries
10Biological assembly
11chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
6N3D Structure of HIV Tat-specific factor 1 U2AF Homology Motif (APO-State) Deposited 2018-11-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 260–353（94 aa）
Not recorded CL CHLORIDE ION × 4 PEG DI(HYDROXYETHYL)ETHER × 1 MG MAGNESIUM ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；277.15 K；15% PEG 8000, 0.4 M MgCl2, 0.1 M TRIS
Resolution 1.13 Å R-free 0.160
6N3E Structure of HIV Tat-specific factor 1 U2AF Homology Motif bound to U2AF ligand motif 4 Deposited 2018-11-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 260–353（94 aa）
Not recorded GOL GLYCEROL × 1 FMT FORMIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；277.15 K；0.2 M Magnesium formate dihydrate, 20% PEG 3350
Resolution 1.89 Å R-free 0.198
6N3F Structure of HIV Tat-specific factor 1 U2AF Homology Motif bound to SF3b1 ULM5 Deposited 2018-11-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 260–353（94 aa）
Chain C 260–353（94 aa）
Not recorded PEG DI(HYDROXYETHYL)ETHER × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；277.15 K；15% PEG 8000, 0.1 M Tris
Resolution 2.10 Å R-free 0.219
6NSX Yeast Hsh155 Ligand bound to Human Tat-SF1 Motif Deposited 2019-01-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 260–353（94 aa）
Not recorded CL CHLORIDE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；277.15 K；0.1 M HEPES, 10% PEG 6000
Resolution 2.00 Å R-free 0.194
6Y50 5'domain of human 17S U2 snRNP Deposited 2020-02-24 Assembly 1 Protein–RNA Heteromer；Protein × 8 PDB declaration: nonameric（9） Consistent with all polymers
Chain q 1–755（755 aa）
Not recorded ZN ZINC ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
6Y53 human 17S U2 snRNP low resolution part Deposited 2020-02-24 Assembly 1 Protein–RNA Heteromer；Protein × 18 PDB declaration: nonadecameric（19） Consistent with all polymers
Chain q 1–755（755 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.10 Å
6Y5Q human 17S U2 snRNP Deposited 2020-02-25 Assembly 1 Protein–RNA Heteromer；Protein × 21 PDB declaration: 22-meric（22） Consistent with all polymers
Chain q 1–755（755 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.10 Å
7EVO The cryo-EM structure of the human 17S U2 snRNP Deposited 2021-05-21 Assembly 1 Protein–RNA Heteromer；Protein × 20 PDB declaration: 21-meric（21） Consistent with all polymers
Chain D 1–755（755 aa）
Not recorded 9B0 [(2~{S},3~{S},4~{E},6~{S},7~{R},10~{R})-3,7-dimethyl-2-[(2~{E},4~{E},6~{R})-6-methyl-6-oxidanyl-7-[(2~{R},3~{R})-3-[(2~{R},3~{S})-3-oxidanylpentan-2-yl]oxiran-2-yl]hepta-2,4-dien-2-yl]-7,10-bis(oxidanyl)-12-oxidanylidene-1-oxacyclododec-4-en-6-yl] 4-cycloheptylpiperazine-1-carboxylate × 1 ZN ZINC ION × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.50 Å
7Q3L Human 17S U2 snRNP 5' domain Deposited 2021-10-28 Assembly 1 Protein–RNA Heteromer；Protein × 8 PDB declaration: nonameric（9） Consistent with all polymers
Chain q 2–755（754 aa）
Not recorded ZN ZINC ION × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9；Sample after desalting may have also contained up to 5% glycerol.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.21 Å
8HK1 The cryo-EM structure of human pre-17S U2 snRNP Deposited 2022-11-24 Assembly 1 Protein–RNA Heteromer；Protein × 20 PDB declaration: 21-meric（21） Consistent with all polymers
Chain D 1–755（755 aa）
Not recorded 9B0 [(2~{S},3~{S},4~{E},6~{S},7~{R},10~{R})-3,7-dimethyl-2-[(2~{E},4~{E},6~{R})-6-methyl-6-oxidanyl-7-[(2~{R},3~{R})-3-[(2~{R},3~{S})-3-oxidanylpentan-2-yl]oxiran-2-yl]hepta-2,4-dien-2-yl]-7,10-bis(oxidanyl)-12-oxidanylidene-1-oxacyclododec-4-en-6-yl] 4-cycloheptylpiperazine-1-carboxylate × 1 ZN ZINC ION × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 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.