X-Ray crystallographic evidence for the presence of the cysteine tryptophylquinone cofactor in L-lysine ε-oxidase from Marinomonas mediterranea

Seiji Okazaki, Shogo Nakano, Daisuke Matsui, Shusaku Akaji, Kenji Inagaki, Yasuhisa Asano

研究成果査読

25 被引用数 (Scopus)

抄録

We have determined the x-ray crystal structure of l-lysine ε-oxidase from Marinomonas mediterranea in its native and l-lysine-complex forms at 1.94- and 1.99-Å resolution, respectively. In the native enzyme, electron densities clearly indicate the presence of cysteine tryptophylquinone (CTQ) previously identified in quinohemoprotein amine dehydrogenase. In the l-lysine-complex, an electron density corresponding to the bound l-lysine shows that its ε-amino group is attached to the C6 carbonyl group of CTQ, suggesting the formation of a Schiff-base intermediate. Collectively, the present crystal structure provides the first example of an enzyme employing a tryptophylquinone cofactor in an amine oxidase.

本文言語English
ページ(範囲)233-236
ページ数4
ジャーナルJournal of biochemistry
154
3
DOI
出版ステータスPublished - 9月 2013

ASJC Scopus subject areas

  • 生化学
  • 分子生物学

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