Protein
4,5-DOPA dioxygenase extradiol
Organism
Escherichia coli (strain K12)
Function
In vitro, opens the cyclic ring of dihydroxy-phenylalanine (DOPA) between carbons 4 and 5, thus producing an unstable seco-DOPA that rearranges nonenzymatically to betalamic acid. The physiological substrate is unknown.
Similarity
Belongs to the DODA-type extradiol aromatic ring-opening dioxygenase family.
Sequence
MTPLVKDIIMSSTRMPALFLGHGSPMNVLEDNLYTRSWQKLGMTLPRPQAIVVVSAHWFTRGTGVTAMETPPTIHDFGGFPQALYDTHYPAPGSPALAQRLVELLAPIPVTLDKEAWGFDHGSWGVLIKMYPDADIPMVQLSIDSSKPAAWHFEMGRKLAALRDEGIMLVASGNVVHNLRTVKWHGDSSPYPWATSFNEYVKANLTWQGPVEQHPLVNYLDHEGGTLSNPTPEHYLPLLYVLGAWDGQEPITIPVEGIEMGSLSMLSVQIG