Background Bacterial adhesin
fimh bacterial adhesin helps bacteria such escherichia coli bind host cells , receptors (here: human proteins cd48 , tlr4, or mannose residues).
most fimbria of gram-negative bacteria function adhesins, in many cases minor subunit protein @ tip of fimbriae actual adhesin. in gram-positive bacteria, protein or polysaccharide surface layer serves specific adhesin. achieve adherence host surfaces, many bacteria produce multiple adherence factors called adhesins.
bacterial adhesins provide species , tissue tropism. adhesins expressed both pathogenic bacteria , saprophytic bacteria. prevalence marks them key microbial virulence factors in addition bacterium’s ability produce toxins , resist immune defenses of host.
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