The Enzyme Database

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EC 1.3.3.16     
Accepted name: oxazoline dehydrogenase
Reaction: (1) a [protein]-(1S,4R)-2-(C-substituted-aminomethyl)-4-acyl-2-thiazoline + O2 = a [protein]-(S)-2-(C-substituted-aminomethyl)-4-acyl-1,3-thiazole + H2O2
(2) a [protein]-(S,S)-2-(C-substituted-aminomethyl)-4-acyl-2-oxazoline + O2 = a [protein]-(S)-2-(C-substituted-aminomethyl)-4-acyl-1,3-oxazole + H2O2
(3) a [protein]-(S,S)-2-(C-substituted-aminomethyl)-4-acyl-5-methyl-2-oxazoline + O2 = a [protein]-(S)-2-(C-substituted-aminomethyl)-4-acyl-5-methyl-1,3-oxazole + H2O2
Other name(s): azoline oxidase; thiazoline oxidase; cyanobactin oxidase; patG (gene name); mcaG (gene name); artG (gene name); lynG (gene name); tenG (gene name)
Systematic name: a [protein]-2-oxazoline:oxygen oxidoreductase (2-oxazole-forming)
Comments: Contains FMN. This enzyme oxidizes 2-oxazoline, 5-methyl-2-oxazoline, and 2-thiazoline within peptides, which were formed by EC 6.2.2.2, oxazoline synthase, and EC 6.2.2.3, thiazoline synthase, to the respective pyrrole-type rings. The enzyme is found as either a stand-alone protein or as a domain within a multifunctional protein (the G protein) that also functions as a peptidase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Li, Y.M., Milne, J.C., Madison, L.L., Kolter, R. and Walsh, C.T. From peptide precursors to oxazole and thiazole-containing peptide antibiotics: microcin B17 synthase. Science 274 (1996) 1188–1193. [PMID: 8895467]
2.  Schmidt, E.W., Nelson, J.T., Rasko, D.A., Sudek, S., Eisen, J.A., Haygood, M.G. and Ravel, J. Patellamide A and C biosynthesis by a microcin-like pathway in Prochloron didemni, the cyanobacterial symbiont of Lissoclinum patella. Proc. Natl. Acad. Sci. USA 102 (2005) 7315–7320. [PMID: 15883371]
3.  Bent, A.F., Mann, G., Houssen, W.E., Mykhaylyk, V., Duman, R., Thomas, L., Jaspars, M., Wagner, A. and Naismith, J.H. Structure of the cyanobactin oxidase ThcOx from Cyanothece sp. PCC 7425, the first structure to be solved at Diamond Light Source beamline I23 by means of S-SAD. Acta Crystallogr D Struct Biol 72 (2016) 1174–1180. [PMID: 27841750]
4.  Ghilarov, D., Stevenson, C.EM., Travin, D.Y., Piskunova, J., Serebryakova, M., Maxwell, A., Lawson, D.M. and Severinov, K. Architecture of microcin B17 synthetase: an octameric protein complex converting a ribosomally synthesized peptide into a DNA gyrase poison. Mol. Cell 73 (2019) 749–762.e5. [PMID: 30661981]
[EC 1.3.3.16 created 2020]
 
 


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