细胞色素c氧化酶作为眼虫对氧气进行化学积累（趋化作用）的受体分子。

Cytochrome c oxidase as the receptor molecule for chemoaccumulation (chemotaxis) of Euglena toward oxygen.

作者信息

Miller S, Diehn B

出版信息

Science. 1978 May 5;200(4341):548-9. doi: 10.1126/science.205948.

DOI:10.1126/science.205948

PMID:205948

Abstract

Chemoaccumulation of Euglena gracilis toward oxygen was selectively inhibited, without concomitant effects on cell motility, by cyanide (10(-6) to 10(-4) molar) and carbon monoxide (5 x 10(-5) to 5 x 10(-4) molar). Above these concentrations, motility of the cell was imparied and the chemosensory response was inhibited. Azide did not affect chemoaccumulation even at 5 x 10(-3) molar. It is concluded that cytochrome a3 serves as the chemoreceptor molecule for oxygen-mediated behavioral responses in Euglena.

摘要

纤细裸藻向氧的化学积累被氰化物（10⁻⁶至10⁻⁴摩尔）和一氧化碳（5×10⁻⁵至5×10⁻⁴摩尔）选择性抑制，且对细胞运动性无伴随影响。高于这些浓度时，细胞运动性受损且化学感应反应受到抑制。叠氮化物即使在5×10⁻³摩尔时也不影响化学积累。得出的结论是，细胞色素a3作为纤细裸藻中氧介导行为反应的化学感受器分子。