SwmB, a 1.12-megadalton protein that is required for nonflagellar swimming motility in Synechococcus.
نویسندگان
چکیده
SwmB is required for swimming motility in Synechococcus sp. strain WH8102. This highly repetitive 1.12-MDa polypeptide is associated with the cell surface, where it is arranged in a punctate manner. Inactivation of swmB does not affect the localization of SwmA, an S-layer protein also required for swimming.
منابع مشابه
Swimming motility mutants of marine Synechococcus affected in production and localization of the S-layer protein SwmA.
The S-layer protein SwmA is required for nonflagellar swimming in marine Synechococcus. An analysis of mutations in seven genes at two loci in the Synechococcus sp. strain WH8102 genome indicates that a multicomponent transporter and glycosyltransferases are required for the production and proper localization of SwmA.
متن کاملInactivation of swmA results in the loss of an outer cell layer in a swimming synechococcus strain.
The mechanism of nonflagellar swimming of marine unicellular cyanobacteria remains poorly understood. SwmA is an abundant cell surface-associated 130-kDa glycoprotein that is required for the generation of thrust in Synechococcus sp. strain WH8102. Ultrastructural comparisons of wild-type cells to a mutant strain in which the gene encoding SwmA has been insertionally inactivated reveal that the...
متن کاملNon-flagellar swimming in marine Synechococcus.
Certain marine unicellular cyanobacteria of the genus Synechococcus exhibit a unique type of swimming motility characterized by the absence of flagella and of any other obvious organelle of motility. Although the mechanism responsible for this phenomenon remains mysterious, recent advances have included the development of testable models as well as the identification of a cell-surface polypepti...
متن کاملTransposon mutagenesis in a marine synechococcus strain: isolation of swimming motility mutants.
Certain marine unicellular cyanobacteria of the genus Synechococcus exhibit a unique type of swimming motility characterized by the absence of flagella or any other obvious organelles of motility. While the abundant cell surface-associated 130-kDa glycoprotein SwmA is known to be required for the generation of thrust, identification of other components of the motility apparatus has, until recen...
متن کاملSelf-electrophoresis is not the mechanism for motility in swimming cyanobacteria.
Swimming cyanobacteria do not have flagella. In principle, they could be propelled by streams of ions flowing from head to tail, i.e., by a self-electrophoretic mechanism. We have ruled out this possibility by showing that cells of a swimming Synechococcus species fail to drift in an external electric field.
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 189 3 شماره
صفحات -
تاریخ انتشار 2007