Characterization of pulmonary carbonyl reductase of mouse and guinea pig

Toshihiro Nakayama, Koji Yashiro, Yoshio Inoue, Kazuya Matsuura, Hideshi Ichikawa, Akira Hara, Hideo Sawada

研究成果: ジャーナルへの寄稿学術論文査読

37 被引用数 (Scopus)

抄録

Carbonyl reductases were purified from mouse and guinea pig lung. The mouse enzyme exhibited structural and catalytic similarity to the guinea pig enzyme: tetrameric structure consisting of an identical 23 kDa subunit; basicity (pI of 8.8); low substrate specificity for alphatic and aromatic carbonyl compounds; dual cofactor specificity for NADPH and NADH; stereospecific transfer of the 4-pro S hydrogen of NADPH; and sensitivity to pyrazole, 2-mercaptoethanol and ferrous ion. Although 3-ketosteroids were extensively reduced by the mouse enzyme but not by the guinea pig enzyme in the forward reaction, the two enzymes similarly oxidized some alicyclic alcohols such as acenaphthenol, cyclohex-2-en-1-ol and benzenedihydrodiol in the presence of NADP+ and NAD+. A partial similarity between the two enzymes was observed immunologically, using antibodies against the purified guinea pig enzyme. The lung enzymes differ in several aspects from other oxidoreductases from extrapulmonary tissues. The immunoreactive protein was detected only in lung of the tissues of the two species.

本文言語英語
ページ(範囲)220-227
ページ数8
ジャーナルBBA - General Subjects
882
2
DOI
出版ステータス出版済み - 19-06-1986
外部発表はい

All Science Journal Classification (ASJC) codes

  • 生物理学
  • 生化学
  • 分子生物学

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