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Mechanism of colour discrimination by a bacterial sensory rhodopsinA photosensitive protein resembling the visual pigments of invertebrates enables phototactic archaebacteria to distinguish color. This protein exists in two spectrally-distinct forms, one of which is a transient photoproduct of the other and each of which undergoes photochemical reactions controlling the cell's swimming behaviour. Activation of a single pigment molecule in the cell is sufficient to signal the flagellar motor. This signal-transduction mechanism makes evident a color-sensing capability inherent in the retinal/protein chromophore.
Document ID
19850036001
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Spudich, J. L.
(Albert Einstein College of Medicine Bronx, NY, United States)
Bogomolni, R. A.
(California, University San Francisco, CA, United States)
Date Acquired
August 12, 2013
Publication Date
December 6, 1984
Publication Information
Publication: Nature
Volume: 312
ISSN: 0028-0836
Subject Category
Life Sciences (General)
Accession Number
85A18152
Funding Number(s)
CONTRACT_GRANT: NSF PCM-83-16139
CONTRACT_GRANT: NIH-GM-27750
CONTRACT_GRANT: NIH-GM-27057
CONTRACT_GRANT: NSG-7151
Distribution Limits
Public
Copyright
Other

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