Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/3PCE 3PCE: STRUCTURE OF PROTOCATECHUATE 3,4-DIOXYGENASE COMPLEXED WITH 3-HYDROXYPHENYLACETATE PROTOCATECHUATE 3,4-DIOXYGENASE3-HYDROXYPHENYLACETATEBETA-MERCAPTOETHANOLFE (III) ION structure