This domain is VioE present in Chromobacterium violaceum. VioE plays a key role in the biosynthesis of violacein. Violacein has potential medical applications as an antibacterial, anti-tryptanocidal, anti-ulcerogenic and as an anti-cancer drug. VioE forms a homodimer with a chiefly hydrophobic interface between the two VioE monomers.The fact that VioE adopts a fold normally associated with lipoprotein carrier proteins may be due to VioE for binding the hydrophobic polyethylene glycol [1].

1: The violacein biosynthetic enzyme VioE shares a fold with lipoprotein transporter proteins. Ryan KS, Balibar CJ, Turo KE, Walsh CT, Drennan CL; J Biol Chem. 2008;283:6467-6475. PMID:18171675