Transport proteins promoting Escherichia coli pathogenesis
نویسندگان
چکیده
منابع مشابه
Solitary BioY proteins mediate biotin transport into recombinant Escherichia coli.
Energy-coupling factor (ECF) transporters form a large group of vitamin uptake systems in prokaryotes. They are composed of highly diverse, substrate-specific, transmembrane proteins (S units), a ubiquitous transmembrane protein (T unit), and homo- or hetero-oligomeric ABC ATPases. Biotin transporters represent a special case of ECF-type systems. The majority of the biotin-specific S units (Bio...
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The branched-chain amino acids are transported into the bacteria Escherichia coli by two types of transport systems, a high affinity transport system (LIV-I) which requires periplasmic binding proteins and a low affinity membrane bound system (LIV-11). The LIV-I system is sensitive to osmotic shock while the LIV-I1 system can be observed in membrane vesicle preparations (Kaback, ’71). Berger an...
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The present study is concerned with the measurement of the unidirectional K flux in E, coli. Methods are described by means of which a fairly dense suspension of cells may be maintained in a well defined steady-state with respect to the intracellular K concentration and the pH of the medium. The kinetics of K 4~ exchange under these conditions are consistent with the presence of a single intrac...
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K influx and net K flux have been measured in suspensions of chloramphenicol-arrested Escherichia coli. The rate of K exchange in the steady state was independent of the K concentration of the medium over a 200-fold range. Under a number of experimental conditions the rate of exchange may be considerably increased or decreased without changing the cellular K content. These results show that und...
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ژورنال
عنوان ژورنال: Microbial Pathogenesis
سال: 2014
ISSN: 0882-4010
DOI: 10.1016/j.micpath.2014.03.008