Phototactic behaviour of the archaebacterial Natronobacterium pharaonis

FEBS Letters

Wolff, Elmar K.²  Scharf, Birgit¹ 

[1] Max-Planck-Institut für molekulaire Physiologie, Rheinlanddamm 201, 44139 Dortmund, Germany;Universität Witten/Herdecke, 58453 Witten, Germany

关键词: Phototaxis;    Aerotaxis;    Sensory rhodopsin;    Halophilic archaebacteria;    Natronobacterium pharaonis;   

DOI  :  10.1016/0014-5793(94)80183-5

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Natronobacterium pharaonis can react tactically to photo- and chemostimuli. It moves by rotation of a flagellar bundle which is monopolarly inserted. Under sufficient oxygen supply the photophobic response of N. pharaonis has been measured. The resulting action spectrum matches the absorption spectrum of the purified retinylidene protein psR-II. Retical synthesis could be inhibited by nicotine. Cells grown in the presence of nicotine show a strongly reduced photoresponse, which could be restored by addition of retinal. These data identify psR-II as the receptor for negative phototaxis.

【 授权许可】

Unknown