Methylamine utilisation protein

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Function

Methylamine utilisation protein. (MauG) is a 2 c type heme protein (in which the heme is covalently bound to the protein) which catalyses the post translational modification of tryptophan cryptophilquinone biosynthesis within methylamine dehydrogenase (MADH). The catalysis process is a remote one involving hole hopping mechanism of electron transfer in which Top residues are reversibly oxidized[1]. MauG catalyses the 6-electron oxidation of MADH using hydrogen peroxide or oxygen.

Disease

Relevance

Structural highlights

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MauG containing hydroxytryptophan (grey, green) complex with MADH light chain(magenta, pink), MADH heavy chain (yellow, cyan), acetate, PEG, tetra ethylene glycol Na+, Ca+2 (PDB ID 3pxt)

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ReferencesReferences

  1. Shin S, Davidson VL. MauG, a diheme enzyme that catalyzes tryptophan tryptophylquinone biosynthesis by remote catalysis. Arch Biochem Biophys. 2014 Feb 15;544:112-8. doi: 10.1016/j.abb.2013.10.004. Epub, 2013 Oct 19. PMID:24144526 doi:http://dx.doi.org/10.1016/j.abb.2013.10.004

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Michal Harel