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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：Q31NU0 New Search
2PDB entries
2Biological assembly
6chain/assembly records
Main Difference Dimensions in This Set
Different assembly state Different ligand/ion 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
6KIF Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex Deposited 2019-07-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 54 PDB declaration: 54-meric（54） Consistent with protein count
Chain J 1–41（41 aa）
Chain T 1–41（41 aa）
Chain l 1–41（41 aa）
Not recorded CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 12 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 FMN FLAVIN MONONUCLEOTIDE × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
6KIG Structure of cyanobacterial photosystem I-IsiA supercomplex Deposited 2019-07-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 51 PDB declaration: 51-meric（51） Consistent with protein count
Chain J 1–41（41 aa）
Chain T 1–41（41 aa）
Chain l 1–41（41 aa）
Not recorded CLA CHLOROPHYLL A × 594 PQN PHYLLOQUINONE × 6 SF4 IRON/SULFUR CLUSTER × 9 BCR BETA-CAROTENE × 144 LHG 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE × 45 LMU DODECYL-ALPHA-D-MALTOSIDE × 18 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 24 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 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.