Protein
Acireductone dioxygenase 2
Organism
Pectobacterium atrosepticum (strain SCRI 1043 / ATCC BAA-672)
Function
Catalyzes 2 different reactions between oxygene and the acireductone 1,2-dihydroxy-3-keto-5-methylthiopentene (DHK-MTPene) depending upon the metal bound in the active site. Fe-containing acireductone dioxygenase (Fe-ARD) produces formate and 2-keto-4-methylthiobutyrate (KMTB), the alpha-ketoacid precursor of methionine in the methionine recycle pathway. Ni-containing acireductone dioxygenase (Ni-ARD) produces methylthiopropionate, carbon monoxide and formate, and does not lie on the methionine recycle pathway.
Similarity
Belongs to the acireductone dioxygenase (ARD) family.
Sequence
MSGLTIFSDSDASQPIWQSQDADAIQKQLNDIGVRFERWEASQKLSDAPSSEEVLAVYQHEIDKLVAEKGYQSWDVISMRSDNPQCAELRTKFLSEHIHHEDEVRFFVEGAGLFCLHLNGKIYQILCEKNDLLSVPAGTAHWFDMGPEPHFTAIRLFDNPEGWIAHFTGDKIADVYPKLEC