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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：P55081 New Search
14PDB entries
14Biological assembly
14chain/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
5F5S Crystal structure of the Prp38-MFAP1 complex of Homo sapiens Deposited 2015-12-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 267–344（78 aa） Fragment：UNP residues 267-344
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 4.4；277.15 K；0.1 M sodium acetate, pH 4.4 and 15% (v/v) 1,3-Butandiol
Resolution 2.40 Å R-free 0.261
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 K 1–439（439 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 0 1–439（439 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
7AAV Human pre-Bact-2 spliceosome core structure Deposited 2020-09-04 Assembly 1 Protein–RNA Heteromer；Protein × 13 PDB declaration: heptadecameric（17） Consistent with all polymers
Chain K 1–439（439 aa）
Not recorded GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 KGN D-chiro inositol hexakisphosphate × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
7ABF Human pre-Bact-1 spliceosome core structure Deposited 2020-09-07 Assembly 1 Protein–RNA Heteromer；Protein × 12 PDB declaration: pentadecameric（15） Consistent with all polymers
Chain K 1–439（439 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 3.90 Å
7ABG Human pre-Bact-1 spliceosome Deposited 2020-09-07 Assembly 1 Protein–RNA Heteromer；Protein × 54 PDB declaration: 58-meric（58） Consistent with all polymers
Chain K 1–439（439 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 GTG 7-METHYL-GUANOSINE-5'-TRIPHOSPHATE-5'-GUANOSINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.80 Å
7ABI Human pre-Bact-2 spliceosome Deposited 2020-09-07 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 56-meric（56） Consistent with all polymers
Chain K 1–439（439 aa）
Not recorded GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 8.00 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 4K 1–439（439 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
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 K 1–439（439 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 K 1–439（439 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
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 K 1–439（439 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
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 K 1–439（439 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
9R3D Cryo-EM structure of the human pre-Bact-OTS complex (whole map) Deposited 2025-05-04 Assembly 1 Protein–RNA Heteromer；Protein × 14 PDB declaration: 17-meric（17） Consistent with all polymers
Chain K 1–439（439 aa）
Not recorded IHP INOSITOL HEXAKISPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.12 Å
9R8V Cryo-EM structure of the human pre-Bact-OTS complex (whole map) Deposited 2025-05-17 Assembly 1 Protein–RNA Heteromer；Protein × 59 PDB declaration: 63-meric（63） Consistent with all polymers
Chain K 1–439（439 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 8.50 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.