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Agrisera
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Store lyophilized/reconstituted at -20°C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please remember to spin the tubes briefly prior to opening them to avoid any losses that might occur from material adhering to the cap or sides of the tube.
For reconstitution add 50 µL of sterile water.
Specific Species Reactivity: Cyanobium sp. PCC7001, Synechochoccus elongatus sp.PCC7942, Synechochoccus sp. PCC7002, Synechocystis sp. PCC6803
SbtA encodes a cyanobacterial inorganic-carbon transporter that is embedded in the cytoplasmic (plasma) membrane, where it functions as a high-affinity, Na+-dependent bicarbonate (HCO3-) uptake system supporting the CO2-concentrating mechanism and efficient photosynthetic carbon fixation under CO2-limiting conditions. Structurally, SbtA is an integral membrane protein of ~40 kDa with a characteristic 10-transmembrane-helix architecture organized as two inverted 5-helix repeats consistent with an intragenic duplication origin; topology mapping indicates both the N- and C-termini are exposed on the extracellular/periplasmic side, and the second half of the protein is inverted relative to the first, creating internal loops that likely contribute to regulation and transport coupling. Functionally, SbtA-mediated HCO3- transport is induced during low CO2 availability, requires Na+ as the coupling ion (consistent with a Na+/HCO3- symport mechanism driven by the transmembrane Na+ electrochemical gradient), and genetic disruption of sbtA abolishes high-rate bicarbonate uptake and compromises growth when inorganic carbon is limiting, underscoring its central role in carbon acquisition in many cyanobacterial clades.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
蛋白别名: sbtA; slr1512