The ultra-high affinity transport proteins of ubiquitous marine bacteria.

ABSTRACT: SAR11 bacteria are the most abundant microorganisms in the surface ocean¹ and have global biogeochemical importance^2-4. To thrive in their competitive oligotrophic environment, these bacteria rely heavily on solute-binding proteins that facilitate uptake of specific substrates via membrane transporters^5,6. The functions and properties of these transport proteins are key factors in the assimilation of dissolved organic matter and biogeochemical cycling of nutrients in the ocean, but they have remained largely inaccessible to experimental investigation. Here we performed genome-wide experimental characterization of all solute-binding proteins in a prototypical SAR11 bacterium, revealing specific functions and general trends in their properties that contribute

SUBMITTER: Clifton BE 

PROVIDER: S-EPMC11485210 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature