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  • Title: Glycerol facilitator of Escherichia coli: cloning of glpF and identification of the glpF product.
    Author: Sweet G, Gandor C, Voegele R, Wittekindt N, Beuerle J, Truniger V, Lin EC, Boos W.
    Journal: J Bacteriol; 1990 Jan; 172(1):424-30. PubMed ID: 2152911.
    Abstract:
    The glycerol facilitator is known as the only example of a transport protein that catalyzes facilitated diffusion across the Escherichia coli inner membrane. Here we show that the gene encoding the facilitator, glpF, is the first gene in an operon with glpK, encoding glycerol kinase, at 88 min of the E. coli chromosome. The operon is transcribed counterclockwise. We cloned the glpF gene, demonstrated that it complemented a chromosomal glycerol transport-minus mutation, and identified the gene product. The GlpF protein appeared in the membrane fraction of plasmid-bearing strains and had an apparent Mr of 25,000.
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