5cio is a 2 chain structure with sequence from Serratia sp. FS14. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
A0A1A9TAI5_SERSF Required for coenzyme pyrroloquinoline quinone (PQQ) biosynthesis. It is thought that this protein is a protease that cleaves peptides bond in a small peptide (gene pqqA), providing the glutamate and tyrosine residues which are necessary for the synthesis of PQQ.[ARBA:ARBA00024932]