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  • Title: A new class of cobalamin transport mutants (btuF) provides genetic evidence for a periplasmic binding protein in Salmonella typhimurium.
    Author: Van Bibber M, Bradbeer C, Clark N, Roth JR.
    Journal: J Bacteriol; 1999 Sep; 181(17):5539-41. PubMed ID: 10464235.
    Abstract:
    No periplasmic binding protein has been demonstrated for the ATP-binding cassette (ABC)-type cobalamin transporter BtuCD. New mutations (btuF) are described that affect inner-membrane transport. The BtuF protein has a signal sequence and resembles the periplasmic binding proteins of several other ABC transporters.
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