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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：Q7SIA2 New Search
2PDB entries
2Biological assembly
2chain/assembly records
Main Difference Dimensions in This Set
Different mutation/modification Different experimental conditions

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
1D2D Hamster EprS second repeated element. NMR, 5 structures Deposited 1999-09-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–49（49 aa） Fragment：RESIDUES 1-59
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7；298 K；Pressure 1
NMR sample composition 1.5 MM EPRS REPEAT U-15N; 20 MM POTASSIUM PHOSPHATE PH 7.0, 5 MM DITHIOTHREITOL, 0.5 MM NAN3;
Resolution not provided
1R1B EPRS SECOND REPEATED ELEMENT, NMR, MINIMIZED AVERAGE STRUCTURE Deposited 1998-12-15 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–49（49 aa） Fragment：RESIDUES 1 - 59
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7；293 K；Pressure 1
Resolution not provided

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.