Tol: Difference between revisions
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The Tol system, also known as Tol-Pal, is a multiprotein complex in the cell envelope of many Gram-negative bacteria. It contains 7 proteins organised in two operons. | The Tol system, also known as Tol-Pal, is a multiprotein complex in the cell envelope of many Gram-negative bacteria. It contains 7 proteins ([[TolQ]], [[TolR]], [[TolA]], [[TolB]], [[Pal]], [[YbgF]], [[YbgC]]) organised in two operons. | ||
[[Image:Tol Operon.jpg]] | |||
==Structure== | ==Structure== | ||
Revision as of 16:30, 3 December 2010
The Tol system, also known as Tol-Pal, is a multiprotein complex in the cell envelope of many Gram-negative bacteria. It contains 7 proteins (TolQ, TolR, TolA, TolB, Pal, YbgF, YbgC) organised in two operons.
Structure
Function
Regulation
It has been shown that the regulation of Tol genes is linked to the cell envelope stability. [1] In studies with E. coli, the tol-pal genes have been induced by RcsC in response to cell envelope stress. [2] RcsC is a transmembrane sensor kinase, and along with the cytoplasmic response regulator RcsB, makes up the RcsBC regulatory system. [3] RcsBC is involved in the regulation of cps genes which code for the biosynthsis machinery of a major componant for the capsula, cholanic acid.
