منابع مشابه
Chemotaxis in a gliding bacterium.
Myxococcus xanthus cells exhibit directed motility up phosphatidylethanolamine (PE) gradients, and we suggest that PE behaves as a chemoattractant. Computer-assisted stop-motion digital microscopy was used to record cell movements in slide culture. PE decreased cellular reversal frequency with molecular specificity that was correlated with the fatty acid composition. Synthetic dilauroyl (di C12...
متن کامل"Frizzy" aggregation genes of the gliding bacterium Myxococcus xanthus show sequence similarities to the chemotaxis genes of enteric bacteria.
The frz genes of Myxococcus xanthus are necessary for proper aggregation of cells to form fruiting bodies. Mutations in the frz genes affect the frequency with which individual cells reverse their direction of movement. We have subcloned and determined the nucleotide sequence of three of the frz genes. From the sequence we predict three open reading frames corresponding to frzA, frzB, and frzCD...
متن کاملBacterial chemotaxis: The five sensors of a bacterium
The components of the Escherichia coli chemosensory system have been identified and their activities characterized, but how sensory information is processed to give an integrated response remains an open question.
متن کاملAcetylcholinesterase-Inhibiting Activity of Pyrrole Derivatives from a Novel Marine Gliding Bacterium, Rapidithrix thailandica
Acetylcholinesterase-inhibiting activity of marinoquinoline A (1), a new pyrroloquinoline from a novel species of a marine gliding bacterium Rapidithrix thailandica, was assessed (IC(50) 4.9 microM). Two related pyrrole derivatives, 3-(2'-aminophenyl)-pyrrole (3) and 2,2-dimethyl-pyrrolo-1,2-dihydroquinoline (4), were also isolated from two other strains of R. thailandica. The isolation of 3 fr...
متن کاملThermostable chemotaxis proteins from the hyperthermophilic bacterium Thermotoga maritima.
An expressed sequence tag homologous to cheA was previously isolated by random sequencing of Thermotoga maritima cDNA clones (C. W. Kim, P. Markiewicz, J. J. Lee, C. F. Schierle, and J. H. Miller, J. Mol. Biol. 231: 960-981, 1993). Oligonucleotides complementary to this sequence tag were synthesized and used to identify a clone from a T. maritima lambda library by using PCR. Two partially overl...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1998
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.95.20.11957