Dictionary » P » Pilus



noun, plural: pili

(microbiology) Short, filamentous projection on a bacterial cell, used not for motility but for adhering to other bacterial cell (especially for mating) or to animal cells.


Bacterial pili are involved in cell adhesion. Specialized structures (called sex pili) have an important role in conjugation with another bacterial cell. The major constituent of a pilus is a protein called pilin.

Word origin: a combining form meaning “hair,”


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Concept Map Help

I am trying to do a concept map here are the words: bacteriophage, conjugation, deletion, F pilus, frameshift, genotype changes, insertion, mutation, naked DNA, recombination, competent cell transduction, transformation. Does the frameshift would it go under it's own ...

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by Layd33foxx
Tue Mar 13, 2012 3:47 am
Forum: Microbiology
Topic: Concept Map Help
Replies: 6
Views: 3827

Bacterial Genetics Project

... out what materials I need. Is there some way to label a phage and observe the passing of genetic material from one cell to the other through the pilus? I only have access to a light microscope. Does anyone have any ideas? Thank you

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by Quiksilver737
Sat Mar 19, 2011 8:44 pm
Forum: Genetics
Topic: Bacterial Genetics Project
Replies: 0
Views: 2000

Inheritance of T3SS pilus

... immediate answer and I feel that I am missing some pertinent information. I believe the question would be concerning the inheritance of the T3SS pilus. Any help explaining whether this point is valid or faulty would be appreciated. His argument goes as follows: The LOGICAL flow chart for this ...

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by SouthernFriedSkeptic
Thu Aug 30, 2007 3:23 am
Forum: Evolution
Topic: Inheritance of T3SS pilus
Replies: 1
Views: 2914

fimbriae and pili are confusing terms

If my memory serves me right, the pili, specifically the F-pilus facilitates conjugation. Initially, it was thought that the pili was where the DNA passes through but it was shown that the site od DNA transfer was through another opening in the membranes; ...

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by mkwaje
Mon Oct 23, 2006 8:44 am
Forum: Microbiology
Topic: fimbriae and pili are confusing terms
Replies: 4
Views: 18626

The Fiber Disease

... species orientation? The caps here, are they in Anstroms? (sp). Will see if can find...more on later dates of this> Tt, pilA mutant expressing pilus-like structures...... http://iai.asm.org/cgi/content/full/73/3/1635/F5 Skytroll

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by Skytroll
Sat Sep 09, 2006 5:20 pm
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6245092
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