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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：O43290 New Search
26PDB entries
31Biological assembly
31chain/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
4PYU The conserved ubiquitin-like protein hub1 plays a critical role in splicing in human cells Deposited 2014-03-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 117–135（19 aa） Fragment：UBL5 BINDING MOTIF (UNP RESIDUES 117-135)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；293 K；0.1 M TRIS-HCL, 0.15 M SODIUM ACETATE, 20% W/V PEG4000, pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.00 Å R-free 0.246
4PYU The conserved ubiquitin-like protein hub1 plays a critical role in splicing in human cells Deposited 2014-03-28 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 117–135（19 aa） Fragment：UBL5 BINDING MOTIF (UNP RESIDUES 117-135)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；293 K；0.1 M TRIS-HCL, 0.15 M SODIUM ACETATE, 20% W/V PEG4000, pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.00 Å R-free 0.246
4PYU The conserved ubiquitin-like protein hub1 plays a critical role in splicing in human cells Deposited 2014-03-28 Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain H 117–135（19 aa） Fragment：UBL5 BINDING MOTIF (UNP RESIDUES 117-135)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；293 K；0.1 M TRIS-HCL, 0.15 M SODIUM ACETATE, 20% W/V PEG4000, pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.00 Å R-free 0.246
4PYU The conserved ubiquitin-like protein hub1 plays a critical role in splicing in human cells Deposited 2014-03-28 Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 117–135（19 aa） Fragment：UBL5 BINDING MOTIF (UNP RESIDUES 117-135)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；293 K；0.1 M TRIS-HCL, 0.15 M SODIUM ACETATE, 20% W/V PEG4000, pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.00 Å R-free 0.246
4PYU The conserved ubiquitin-like protein hub1 plays a critical role in splicing in human cells Deposited 2014-03-28 Assembly 5 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain P 117–135（19 aa） Fragment：UBL5 BINDING MOTIF (UNP RESIDUES 117-135)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；293 K；0.1 M TRIS-HCL, 0.15 M SODIUM ACETATE, 20% W/V PEG4000, pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.00 Å R-free 0.246
4PYU The conserved ubiquitin-like protein hub1 plays a critical role in splicing in human cells Deposited 2014-03-28 Assembly 6 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain T 117–135（19 aa） Fragment：UBL5 BINDING MOTIF (UNP RESIDUES 117-135)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；293 K；0.1 M TRIS-HCL, 0.15 M SODIUM ACETATE, 20% W/V PEG4000, pH 9.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.00 Å R-free 0.246
5O9Z Cryo-EM structure of a pre-catalytic human spliceosome primed for activation (B complex) Deposited 2017-06-20 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 57-meric（57） Consistent with all polymers
Chain P 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.50 Å
6AHD The Cryo-EM Structure of Human Pre-catalytic Spliceosome (B complex) at 3.8 angstrom resolution Deposited 2018-08-17 Assembly 1 Protein–RNA Heteromer；Protein × 58 PDB declaration: 63-meric（63） Consistent with all polymers
Chain 9 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
6QW6 Structure of the human U5.U4/U6 tri-snRNP at 2.9A resolution. Deposited 2019-03-05 Assembly 1 Protein–RNA Heteromer；Protein × 36 PDB declaration: 39-meric（39） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 MG MAGNESIUM ION × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE；Wait 30s, blot for 2s to 3s.
Resolution 2.92 Å
6QX9 Structure of a human fully-assembled precatalytic spliceosome (pre-B complex). Deposited 2019-03-07 Assembly 1 Protein–RNA Heteromer；Protein × 65 PDB declaration: 71-meric（71） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded ZN ZINC ION × 6 MG MAGNESIUM ION × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.28 Å
8H6E Cryo-EM structure of human exon-defined spliceosome in the late pre-B state. Deposited 2022-10-17 Assembly 1 Protein–RNA Heteromer；Protein × 56 PDB declaration: 61-meric（61） Consistent with all polymers
Chain 4S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 MG MAGNESIUM ION × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
8H6J Cryo-EM structure of human exon-defined spliceosome in the mature pre-B state. Deposited 2022-10-18 Assembly 1 Protein–RNA Heteromer；Protein × 56 PDB declaration: 61-meric（61） Consistent with all polymers
Chain 4S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 MG MAGNESIUM ION × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.25 Å
8H6K Cryo-EM structure of human exon-defined spliceosome in the mature B state. Deposited 2022-10-18 Assembly 1 Protein–RNA Heteromer；Protein × 58 PDB declaration: 63-meric（63） Consistent with all polymers
Chain 4J 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
8H6L Cryo-EM structure of human exon-defined spliceosome in the early B state. Deposited 2022-10-18 Assembly 1 Protein–RNA Heteromer；Protein × 54 PDB declaration: 59-meric（59） Consistent with all polymers
Chain 4J 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.60 Å
8Q7N cryo-EM structure of the human spliceosomal B complex protomer (tri-snRNP core region) Deposited 2023-08-16 Assembly 1 Protein–RNA Heteromer；Protein × 17 PDB declaration: 21-meric（21） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8QO9 Cryo-EM structure of a human spliceosomal B complex protomer Deposited 2023-09-28 Assembly 1 Protein–RNA Heteromer；Protein × 66 PDB declaration: 71-meric（71） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.29 Å
8QOZ Cryo-EM Structure of Pre-B+5'ss+ATPgammaS Complex (core part) Deposited 2023-09-29 Assembly 1 Protein–RNA Heteromer；Protein × 13 PDB declaration: 17-meric（17） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8QP8 Cryo-EM Structure of Pre-B Complex (core part) Deposited 2023-09-30 Assembly 1 Protein–RNA Heteromer；Protein × 12 PDB declaration: 15-meric（15） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8QP9 Cryo-EM Structure of Pre-B+AMPPNP Complex (core part) Deposited 2023-09-30 Assembly 1 Protein–RNA Heteromer；Protein × 13 PDB declaration: 16-meric（16） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8QPA Cryo-EM Structure of Pre-B+5'ssLNG Complex (core part) Deposited 2023-10-01 Assembly 1 Protein–RNA Heteromer；Protein × 13 PDB declaration: heptadecameric（17） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å
8QPB Cryo-EM Structure of Pre-B+ATP Complex (core part) Deposited 2023-10-01 Assembly 1 Protein–RNA Heteromer；Protein × 13 PDB declaration: 17-meric（17） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å
8QPE Cryo-EM Structure of Pre-B-like Complex (core part) Deposited 2023-10-01 Assembly 1 Protein–RNA Heteromer；Protein × 15 PDB declaration: 20-meric（20） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8QPK Cryo-EM Structure of Pre-B+5'ss Complex (core part) Deposited 2023-10-02 Assembly 1 Protein–RNA Heteromer；Protein × 12 PDB declaration: hexadecameric（16） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8QXD Cryo-EM structure of the cross-exon pre-B complex Deposited 2023-10-24 Assembly 1 Protein–RNA Heteromer；Protein × 56 PDB declaration: 61-meric（61） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 9.60 Å
8QZS Cryo-EM structure of the cross-exon B-like complex Deposited 2023-10-29 Assembly 1 Protein–RNA Heteromer；Protein × 61 PDB declaration: 68-meric（68） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8R08 Cryo-EM structure of the cross-exon pre-B+AMPPNP complex Deposited 2023-10-31 Assembly 1 Protein–RNA Heteromer；Protein × 64 PDB declaration: 71-meric（71） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.10 Å
8R09 Cryo-EM structure of the cross-exon pre-B+5'ss+ATPgammaS complex Deposited 2023-10-31 Assembly 1 Protein–RNA Heteromer；Protein × 54 PDB declaration: 60-meric（60） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8R0A Cryo-EM structure of the cross-exon pre-B+5'ss complex Deposited 2023-10-31 Assembly 1 Protein–RNA Heteromer；Protein × 56 PDB declaration: 62-meric（62） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.80 Å
8R0B Cryo-EM structure of the cross-exon pre-B+ATP complex Deposited 2023-10-31 Assembly 1 Protein–RNA Heteromer；Protein × 54 PDB declaration: 60-meric（60） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.40 Å
8RM5 Cryo-EM structure of the cross-exon pre-B+5'ssLNG+ATPyS complex Deposited 2024-01-05 Assembly 1 Protein–RNA Heteromer；Protein × 54 PDB declaration: 60-meric（60） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.90 Å
8Y6O Cryo-EM Structure of the human minor pre-B complex (pre-precatalytic spliceosome) U11 and tri-snRNP part Deposited 2024-02-02 Assembly 1 Protein–RNA Heteromer；Protein × 41 PDB declaration: 46-meric（46） Consistent with all polymers
Chain S 1–800（800 aa）
Not recorded MG MAGNESIUM ION × 2 IHP INOSITOL HEXAKISPHOSPHATE × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ZN ZINC ION × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen NITROGEN
Resolution 3.38 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.