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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：A0A125YG37 New Search
3PDB entries
3Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
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
9TYG Structure of the MAP2K MEK1 in an inactive conformation in complex with its substrate MAPK ERK2 Deposited 2026-01-19 Assembly 1 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 441–455（15 aa）
Mutation：residue 3-11 replaced with 15 residues GRA24 KIM,Ser218Asp,Ser222Asp ADP ADENOSINE-5'-DIPHOSPHATE × 2 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
9TYH Structure of the MAP2K MEK1 in an active conformation in complex with its substrate MAPK ERK2 Deposited 2026-01-19 Assembly 1 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 441–455（15 aa）
Mutation：residue 3-11 replaced with GRA24 KIM (15 residues),Ser218Asp,Ser222Asp ADP ADENOSINE-5'-DIPHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
9TYI Structure of the MAP2K MEK1 without bound nucleotide in complex with its substrate MAPK ERK2 Deposited 2026-01-19 Assembly 1 Insufficient information Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 441–455（15 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 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.