2-oxoglutarate(2OG)-dependent dioxygenase that catalyzes the conversion of 2-oxoglutarate to succinate and CO(2) in an iron-dependent manner . However, does not couple 2OG turnover to the hydroxylation of acyl-coenzyme A derivatives, implying that it is not directly involved in phytanoyl coenzyme-A metabolism . Does not show detectable activity towards fatty acid CoA thioesters .
Isoform 2 probably lacks enzyme activity.
Isoform 3 probably lacks enzyme activity.