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Mutant derivatives of Halobacterium halobium previously isolated by using a procedure that selected for defective phototactic response to white light were examined for an array of phenotypic characteristics related to phototaxis and chemotaxis. The properties tested were unstimulated swimming behavior, behaviorial responses to temporal gradients of light and spatial gradients of chemoattractants, content of photoreceptor pigments, methylation of methyl-accepting taxis proteins, and transient increases in rate of release of volatile methyl groups induced by tactic stimulation. Several distinct phenotypes were identified, corresponding to a mutant missing photoreceptors, a mutant defective in the methyltransferase, a mutant altered in control of the methylesterase, and mutants apparently defective in intracellular signaling. All except the photoreceptor mutant were defective in both chemotaxis and phototaxis.
S A Sundberg, and
M Alam, and
M Lebert, and
J L Spudich, and
D Oesterhelt, and
G L Hazelbauer
February 1989,
The EMBO journal,
S A Sundberg, and
M Alam, and
M Lebert, and
J L Spudich, and
D Oesterhelt, and
G L Hazelbauer
March 1983,
Proceedings of the National Academy of Sciences of the United States of America,
S A Sundberg, and
M Alam, and
M Lebert, and
J L Spudich, and
D Oesterhelt, and
G L Hazelbauer
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S A Sundberg, and
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D Oesterhelt, and
G L Hazelbauer
March 1993,
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S A Sundberg, and
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J L Spudich, and
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G L Hazelbauer
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S A Sundberg, and
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G L Hazelbauer
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S A Sundberg, and
M Alam, and
M Lebert, and
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G L Hazelbauer
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S A Sundberg, and
M Alam, and
M Lebert, and
J L Spudich, and
D Oesterhelt, and
G L Hazelbauer
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S A Sundberg, and
M Alam, and
M Lebert, and
J L Spudich, and
D Oesterhelt, and
G L Hazelbauer
January 1989,
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S A Sundberg, and
M Alam, and
M Lebert, and
J L Spudich, and
D Oesterhelt, and
G L Hazelbauer
July 1983,
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