This family consists of several bacterial and plant proteins of around 400 residues in length. One member of this family has been characterised in Pseudomonas citronellolis as AtuA, a member of a gene cluster that is essential for the acyclic terpene utilisation (Atu) pathway [1].

1: Identification and characterization of the acyclic terpene utilization gene cluster of Pseudomonas citronellolis. Forster-Fromme K, Jendrossek D; FEMS Microbiol Lett. 2006;264:220-225. PMID:17064376