Protein Modification Browser

Browse for structures by protein modification.

This browser gives access to protein residue modifications in the PDB archive using the protein modification ontology (PSI-MOD) from the Proteomics Standards Initiative (PSI).

More than 200 different types of protein modifications were collected and curated from Chemical Component Dictionary, RESID and PSI-MOD.

You can browse the PSI-MOD Protein Modifications, view the number of associated PDB structures, and search for the specific associated structures.

Selenomethionine, MSE, is not considered a protein modification, since it appears naturally and is incorporated into the peptide chain during protein synthesis.