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Pef
(Plasmid-encoded fimbriae) |
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Chaperone-usher assembly pathway. Mediate binding of the bacteria to the microvilli of enterocytes. ... |
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| Type 1 fimbriae |
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Chaperone-usher assembly pathway. The adhesin FimH mediates T3SS1-independent uptake in murine DCs. ... |
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Myf/pH6 antigen
(Mucoid Yersinia factor) |
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Myf in Y.enterocolitica and its homolog pH 6 antigen in Y.pestis and Y.pseudotuberculosis. Belongs to a class of adhesins that are secreted/assembled via a so-called chaperone/usher pathway: myfA/psaA encodes the main fibriallar subunit, myfB/psaB and myfC/psaC are required for transport of the subunit across the bacterial membrane and assembly of the subunit into fibrillae, MyfB/PsaB is a member of the PapB family of periplasmic chaperones and could act as a chaperone for MyfA/PsaA, while MyfC/PsaC could act as an usher in the outer membrane. MyfE/PsaE and MyfF/PsaF (two component) are required for transcription of myfA/psaA. ... |
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AAFs
(Aggregative adherence fimbriae) |
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Belongs to Dr family of adhesins. At least four allelic variants of AAFs exist, but each is present in only a minority of strains. Most EAEC strains harbor a 60 to 65-MDa plasmid that may encode the AAF/I or AAF/II and , in some cases, the enterotoxin EAST1 and Pet. ... |
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| Adhesive fimbriae |
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Adherence is mediated by proteinaceous surface structures that are referred to as colonization factors (CFs), colonization factor antigens (CFAs), coli surface antigens (CSAs), or putative colonization factors (PCFs). ETEC strains are host-specific. The CFs confer host specificity on the strain. In human-specific ETEC strains, 21 different CFs have been identified. Approximately 75% of human ETEC express either CFA/I, CFA/II or CFA/IV. Animal-specific ETEC strains produce a variety of CFs that are distinct from those produced by human-specific isolates, such as K88 and K99. ETEC strains typically possess multiple plasmids with a wide range of molecular masses. The genes encoding CFs generally are found on a plasmid that also encodes ST and/or LT. ... |
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| Afa/Dr family |
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Afa/Dr family including afimbrial adhesins AfaE-I, AfaE-III and Dr-II as well as the fimbrial Dr and F1845 adhesins. ... |
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ECP
(E. coli common pilus) |
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ECP, composed of a 21-kDa pilin subunit EspA, is a pilus-adherence factor that is crucial to the virulence of E. coli O157 in humans, and is also carried by commensal strains of E. coli. It is suggested that pathogenic E. coli strains may use ECP to mimic commensal E. coli and provide themselves with an ecological advantage for host colonization and evasion of the immune system. ... |
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| Haemagglutinating pili |
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The first well studied adherence factors of H. influenzae, structural and functional homology to the Pap pili of UPEC and type 1 pili of Enterobacteriaceae, sometimes called fimbriae. hif cluster is absent from the completely sequenced genome of H. influenzae Rd. It is cloned and sequenced from several independent type b and non-typable strains. Expression of pili is a phase-variable phenomenon: the transcription of all pili genes is determined by reversible changes in the number of dinucleotide (TA) repeats located within the bidirectional promoter region between hifA and hifB. ... |
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| Type I pili |
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Short-rigid pili. Chaperone-usher pathway assembled pili. Involved in the initial stages of colonisation. ... |
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| Type I pili |
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Short-rigid pili. Chaperone-usher pathway assembled pili. Involved in the initial stages of colonisation. ... |
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