Caulobacter crescentus

Caulobacter crescentus is a Gram-negative, oligotrophic bacterium widely distributed in fresh water lakes and streams.

Caulobacter is an important model organism for studying the regulation of the cell cycle, asymmetric cell division, and cellular differentiation. Caulobacter daughter cells have two very different forms. One daughter is a mobile "swarmer" cell that has a single flagellum at one cell pole that provides swimming motility for chemotaxis. The other daughter, called the "stalked" cell has a tubular stalk structure protruding from one pole that has an adhesive holdfast material on its end, with which the stalked cell can adhere to surfaces. Swarmer cells differentiate into stalked cells after a short period of motility. Chromosome replication and cell division only occurs in the stalked cell stage. Its name derives from its crescent shape caused by the protein crescentin. Its use as a model originated with developmental biologist Lucy Shapiro.

单词	Caulobacter crescentus
释义	Caulobacter crescentus 英语百科 Caulobacter crescentus Caulobacter crescentus is a Gram-negative, oligotrophic bacterium widely distributed in fresh water lakes and streams. Caulobacter is an important model organism for studying the regulation of the cell cycle, asymmetric cell division, and cellular differentiation. Caulobacter daughter cells have two very different forms. One daughter is a mobile "swarmer" cell that has a single flagellum at one cell pole that provides swimming motility for chemotaxis. The other daughter, called the "stalked" cell has a tubular stalk structure protruding from one pole that has an adhesive holdfast material on its end, with which the stalked cell can adhere to surfaces. Swarmer cells differentiate into stalked cells after a short period of motility. Chromosome replication and cell division only occurs in the stalked cell stage. Its name derives from its crescent shape caused by the protein crescentin. Its use as a model originated with developmental biologist Lucy Shapiro.
随便看	expense for preparatory work的意思 expense for protecting mines的意思 expense for settling urban residents in the countryside的意思 expense for technical organizational measures的意思 expense for the resettlement of residents and the removal of obstacles的意思 expense for the service life of buildings的意思 expense for transport in service的意思 expense for trial manufacture of new products的意思 expense for urban development and maintenance的意思 expense for using government funds的意思 expense for work force training的意思 expenseful的意思 expense fund的意思 expense fund deposit的意思 expense in a case的意思 expense in carrying on business的意思 expense in convertible currency的意思 expense increase coefficient的意思 expense incured的意思 expense incurred的意思 expense incurred for living的意思 expense incurred for opening of business的意思 expense incurred for the fire的意思 expense incurred for the transfer的意思 expense in hard currency的意思