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C-Terminal domain of O-antigenic polysaccharide transporter protein Wzt and related proteins The Escherichia coli ABC protein Wzt consists of 2 domains, a conventional ABC domain that binds ATP and utilizes its energy to transport molecules across membranes, and a C terminal domain which is responsible for its target molecule specificity. Wzt is part of the ATP-binding-cassette (ABC) transporter complex, responsible for the transport of the O-antigenic polysaccharide (O-PS) portion of lipopolysaccharide (LPS), a major component of the outer membrane of Gram-negative bacteria. This CD includes Wzt proteins from two Escherichia coli serotypes O8 and O9a, WztO8 and WztO9a; these proteins are specific for their cognate polysaccharides (O8 or O9a O-PS).
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Jiyao W et al.(2023). "The conserved domain database in 2023.",