3wec

Publication Abstract from PubMed

The cytochrome P450 RauA from Rhodococcus erythropolis JCM 6824 catalyzes the hydroxylation of a nitrogen atom in the quinolone ring of aurachin, thereby conferring strong antibiotic activity on the aurachin alkaloid. Here, we report the crystal structure of RauA in complex with its substrate, a biosynthetic intermediate of aurachin RE. Clear electron density showed that the quinolone ring is oriented parallel to the porphyrin plane of the heme cofactor, while the farnesyl chain curls into a U-shape topology and is buried inside the solvent-inaccessible hydrophobic interior of RauA. The nearest atom from the heme iron is the quinolone nitrogen (4.3A), which is consistent with RauA catalyzing the N-hydroxylation of the quinolone ring to produce mature aurachin RE.

Structure of the quinoline N-hydroxylating cytochrome P450 RauA, an essential enzyme that confers antibiotic activity on aurachin alkaloids.,Yasutake Y, Kitagawa W, Hata M, Nishioka T, Ozaki T, Nishiyama M, Kuzuyama T, Tamura T FEBS Lett. 2014 Jan 3;588(1):105-10. doi: 10.1016/j.febslet.2013.11.016. Epub, 2013 Nov 20. PMID:24269679^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.