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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：Q31NB2 New Search
3PDB entries
3Biological assembly
18chain/assembly records
Main Difference Dimensions in This Set
Different mutation/modification Different assembly state 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
6HBC Structure of the repeat unit in the network formed by CcmM and Rubisco from Synechococcus elongatus Deposited 2018-08-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 20 PDB declaration: eicosameric（20） Consistent with protein count
Chain D 1–111（111 aa） Fragment：Rubisco small subunit
Chain E 1–111（111 aa） Fragment：Rubisco small subunit
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；Solutions were made fresh
cryo-EM vitrification conditions Cryogen ETHANE；blot for 3 seconds before plunging
Resolution 2.78 Å
8BCM Structure of Synechococcus elongatus PCC 7942 Rubisco recombinantly expressed from E.coli Deposited 2022-10-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric（16） Consistent with protein count
Chain D 1–111（111 aa） Fragment：Rubisco small subunit
Chain E 1–111（111 aa） Fragment：Rubisco small subunit
Chain K 1–111（111 aa） Fragment：Rubisco small subunit
Chain L 1–111（111 aa） Fragment：Rubisco small subunit
Chain M 1–111（111 aa） Fragment：Rubisco small subunit
Chain N 1–111（111 aa） Fragment：Rubisco small subunit
Chain O 1–111（111 aa） Fragment：Rubisco small subunit
Chain P 1–111（111 aa） Fragment：Rubisco small subunit
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.15 Å
8WPZ Cryo-ET structure of RuBisCO at 3.9 angstroms from Synechococcus elongatus PCC 7942 Deposited 2023-10-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric（16） Consistent with protein count
Chain A 1–111（111 aa）
Chain B 1–111（111 aa）
Chain E 1–111（111 aa）
Chain F 1–111（111 aa）
Chain I 1–111（111 aa）
Chain L 1–111（111 aa）
Chain M 1–111（111 aa）
Chain P 1–111（111 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 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.