2006
DOI: 10.1007/s10529-006-9149-9
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Transport kinetics of ectoine, an osmolyte produced by Brevibacterium epidermis

Abstract: Brevibacterium epidermis DSM 20659 is a halotolerant Gram-positive bacterium, which can synthesize the osmolyte, ectoine, but prefers to take it up from its environment. The present study revealed that B. epidermis is equipped with at least one transport system for ectoine, with a maximal transport velocity of 15.7 ± 4.3 nmol/g CDW/min. The transport requires energy and is completely inhibited by the proton uncoupler CCCP. The ectoine uptake system is constitutively expressed at a basal level of activity and i… Show more

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Cited by 4 publications
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“…Often there are several systems involved in the uptake of these osmolytes in order to provide a robust strategy to counter the adverse condition [32]. Several ectoine transport systems involved in adaptation to osmotic stress, temperature, and nutrient stress conditions were characterized in bacteria and assigned to four different transport families: (i) binding protein-dependent ABC transporters, (ii) major facilitator family (MFS), (iii) BCCT, and (iv) periplasmatic binding protein-dependent tripartite ATP independent periplasmatic transporter family (TRAP-T) [33,34]. Generally, transport systems have a broad specificity, being able to transport other compatible solutes; but there are also cases, like the TeaABC transporter system in Halomonas elongata [35] and the EctT transporter in Virgibacillus pantothenticus [36], where the system is specific for ectoine.…”
Section: Ectoine Uptake By T Weissflogiimentioning
confidence: 99%
“…Often there are several systems involved in the uptake of these osmolytes in order to provide a robust strategy to counter the adverse condition [32]. Several ectoine transport systems involved in adaptation to osmotic stress, temperature, and nutrient stress conditions were characterized in bacteria and assigned to four different transport families: (i) binding protein-dependent ABC transporters, (ii) major facilitator family (MFS), (iii) BCCT, and (iv) periplasmatic binding protein-dependent tripartite ATP independent periplasmatic transporter family (TRAP-T) [33,34]. Generally, transport systems have a broad specificity, being able to transport other compatible solutes; but there are also cases, like the TeaABC transporter system in Halomonas elongata [35] and the EctT transporter in Virgibacillus pantothenticus [36], where the system is specific for ectoine.…”
Section: Ectoine Uptake By T Weissflogiimentioning
confidence: 99%