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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：Q6EMS3 New Search
2PDB entries
2Biological assembly
2chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
9W2U Cryo-EM structure of complex I on the bovine heart submitochondrial particles, open Deposited 2025-07-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 45 PDB declaration: 45-meric（45） Consistent with protein count
Chain K 2–98（97 aa）
Not recorded FME N-FORMYLMETHIONINE × 6 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 11 SF4 IRON/SULFUR CLUSTER × 6 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 6 CHD CHOLIC ACID × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 MYR MYRISTIC ACID × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.60 Å
9W2V Cryo-EM structure of complex I on the bovine heart submitochondrial particles, closed Deposited 2025-07-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 45 PDB declaration: 45-meric（45） Consistent with protein count
Chain K 1–98（98 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) FME N-FORMYLMETHIONINE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 19 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 SF4 IRON/SULFUR CLUSTER × 6 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 CDL CARDIOLIPIN × 6 MG MAGNESIUM ION × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 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.