Molecular Biology Commons^™

Cell Surface Adhesins, Exopolysaccharides And The Por (Type Ix) Secretion System Of Flavobacterium Johnsoniae, Abhishek Shrivastava

Theses and Dissertations

Flavobacterium johnsoniae, a member of the phylum Bacteroidetes, crawls rapidly over surfaces. Cell movement is thought to result from the action of the gliding motor, composed of Gld proteins, on the cell-surface adhesin SprB. Cells lacking SprB are partially defective in motility. Transposon mutagenesis of an sprB mutant resulted in the identification of remA, which encodes a motility adhesin that is partially redundant with SprB. Cells lacking SprB and RemA had more severe motility defects than did cells lacking just SprB. RemA moves on the cell-surface with a speed of 1 to 2 micrometer per sec, similar to SprB. RemA …