Methyl-accepting chemotaxis protein TlpQ

UniProtKB accession:  Q9I0I4

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Chemotactic-signal transducers respond to changes in the concentration of attractants and repellents in the environment, transduce a signal from the outside to the inside of the cell, and facilitate sensory adaptation through the variation of the level of methylation. TlpQ is a chemoreceptor that binds and mediates chemotaxis to histamine, a key biological signaling molecule. It binds histamine with high affinity, which permits responses to very low histamine concentrations (PubMed:30425146). Chemotaxis to histamine may play a role in the virulence of P.aeruginosa by recruiting cells at the infection site and consequently modulating the expression of quorum-sensing-dependent virulence genes (Probable). TlpQ also binds and mediates chemotaxis to polyamines such as putrescine, spermidine, cadaverine, agmatine and ethylenediamine (PubMed:30425146). In addition, binds the quorum-sensing signal autoinducer 2 (AI-2), thus inducing chemotaxis toward AI-2 and biofilm formation (PubMed:33097715).