Document Detail

Role of the response oscillator in inverse responses of Halobacterium halobium to weak light stimuli.
MedLine Citation:
PMID:  3793717     Owner:  NLM     Status:  MEDLINE    
Under certain conditions Halobacterium halobium organisms respond to a weak attractant light stimulus with a repellent response and to a weak repellent stimulus with an attractant response. The appearance of inverse responses depends on the stimulus strength, on the interval length between spontaneous reversals, and on the moment of stimulation during the interval. Although the cells are absolutely refractory to repellent stimuli for 500 ms after a reversal, repellent responses can be evoked even during that period if they are inverse responses to weak attractant stimuli. Simultaneous attractant and repellent stimuli cancel each other even when one of them leads to an inverse response, indicating that normal cellular signals occur at the site of signal integration. We postulate that the inverse responses are caused by certain properties of a cellular oscillator for which we previously postulated a role in response regulation and sensory control in halobacteria (A. Schimz and E. Hildebrand, Nature [London] 317:641-643, 1985).
E Hildebrand; A Schimz
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of bacteriology     Volume:  169     ISSN:  0021-9193     ISO Abbreviation:  J. Bacteriol.     Publication Date:  1987 Jan 
Date Detail:
Created Date:  1987-02-06     Completed Date:  1987-02-06     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  2985120R     Medline TA:  J Bacteriol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  254-9     Citation Subset:  IM    
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MeSH Terms
Halobacterium / physiology*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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