Change of membrane potential is not a component of the photophobic transduction chain in Halobacterium halobium.

Journal of bacteriology ·Vol. 169 ·No. 8 ·1987-08-00 ·Pages 3515-20

Oesterhelt D, Marwan W

Abstract

Long (20 to 50 microns) and bipolarly flagellated cells of Halobacterium halobium were stimulated locally by a focused beam of light, and the photophobic response was analyzed. The results demonstrate that two flagellar bundles did not react in a coordinated fashion. The light-induced stop response of a flagellar bundle only occurred if the stimulus was applied within 5 microns of the polar region. This excluded membrane potential changes from being causally involved in photophobic signalling and indicated that there is a diffusible messenger in the signal transduction chain which is subjected to decay. In addition, the photoreceptor may be localized at the polar end of the cell.

MeSH Terms

Cell Movement/radiation effects Flagella/physiology,radiation effects Halobacterium/physiology,radiation effects,ultrastructure Light Membrane Potentials/radiation effects

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

Oesterhelt D

Marwan W

References (17)

17 references, click to expand

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Article Info

Journal

Journal of bacteriology

Abbr.

J Bacteriol

ISSN

0021-9193

DOI

10.1128/jb.169.8.3515-3520.1987

Published

1987-08-00

Pages

3515-20

Language

English

Region

United States

NLM ID

2985120R

PMCID

PMC212426

Subset

External Links

PubMed source DOI: 10.1128/jb.169.8.3515-3520.1987 PMC Full Text View journal details

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Change of membrane potential is not a component of the photophobic transduction chain in Halobacterium halobium.

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