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Fimbriae bacterial

Fimbriae, bacterial

thin, hairlike appendages, 1 to 20 microns in length and often occurring in large numbers, present on the cells of gram-negative bacteria, particularly enterobacteriaceae and neisseria. Unlike flagella, they do not possess motility, but being protein (pilin) in nature, they possess antigenic and haemagglutinating properties. They are of medical importance because some fimbriae mediate the attachment of bacteria to cells via adhesins (adhesins, bacterial). Bacterial fimbriae refer to common pili, to be distinguished from the preferred use of pili, which is confined to sex pili (pili, sex).

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Re: Bacterial Taxonomy

... about. Archaea are rare, and no archaeans are known pathogens. However, if you do happen to be looking at an archaean, it may have hami instead of fimbriae. Hami are similar to fimbriae—both are long projections from the cell that serve a common function—but hami are "barbed" helical ...

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by wildfunguy
Tue Dec 03, 2013 12:21 am
Forum: Microbiology
Topic: Bacterial Taxonomy
Replies: 3
Views: 7209

The Fiber Disease

... after Christian Gram, who developed the staining protocol in 1884. The bacterial cell wall thus contains a unique biopolymer in that it contains ... Gram-negative pathogenic bacteria may be covered in fine hairs called fimbriae (singular: fimbria) these help to stick to body surfaces. Pili can ...

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by Nadas Moksha
Sat Oct 28, 2006 3:28 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6247794

fimbriae and pili are confusing terms

... canal that provides exchange of DNA (plasmids for example) between tho bacterial cells. Fimbriae are hair-like structures present on the surface of some nega-bacteriae, however they ...

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by SU_reptile
Sat Oct 21, 2006 7:10 pm
Forum: Microbiology
Topic: fimbriae and pili are confusing terms
Replies: 4
Views: 18638

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