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  • Title: Surface proteins of the gliding bacterium Cytophaga sp. strain U67 and its mutants defective in adhesion and motility.
    Author: Burchard RP, Bloodgood RA.
    Journal: J Bacteriol; 1990 Jun; 172(6):3379-87. PubMed ID: 2345151.
    Abstract:
    Surface proteins of the gliding bacterium Cytophaga sp. strain U67 that make contact with glass substrata were radioiodinated, using a substratum-immobilized catalyst (Iodo-Gen). At least 15 polypeptides were iodinated, fewer than the number labeled by surface biotinylation of whole cells; these polypeptides define the set of possible candidates for the surface protein(s) that mediates gliding-associated substratum adhesion. The labeling of three adhesion-defective mutants exhibited two characteristic patterns of surface iodination which involved addition, loss, or alteration of several polypeptides of high molecular weight. An adhesion-competent revertant of mutant Adh3 and one of Adh2 exhibited the wild-type labeling pattern. Two other Adh2 revertants resembled their adhesion-defective parent. The labeling pattern of surface polypeptides of a nongliding but adhesive cell strain was similar to that of the wild type.
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