>cd06302 PBP1_LsrB_Quorum_Sensing Periplasmic binding domain of autoinducer-2 (AI-2) receptor LsrB from Salmonella typhimurium and its close homologs. Periplasmic binding domain of autoinducer-2 (AI-2) receptor LsrB from Salmonella typhimurium and its close homologs from other bacteria. The members of this group are homologous to a family of periplasmic pentose/hexose sugar-binding proteins that function as the primary receptors for chemotaxis and transporters of many sugar based solutes in bacteria and archaea and that are a member of the type I periplasmic binding protein superfamily. LsrB binds a chemically distinct form of the AI-2 signal that lacks boron, in contrast to the Vibrio harveyi AI-2 signaling molecule that has an unusual furanosyl borate diester. Hence, many bacteria coordinate their gene expression according to the local density of their population by producing species specific AI-2. This process of quorum sensing allows LsrB to function as a periplasmic AI-2 binding p

Probab=90.44  E-value=1.4  Score=24.82  Aligned_cols=11  Identities=18%  Similarity=0.392  Sum_probs=4.8

Q ss_pred             HHHHHHHHCCC
Q ss_conf             99999997499
Q gi|254780195|r  194 HSVKELQALGV  204 (544)
Q Consensus       194 hSVk~Lrs~GI  204 (544)
T Consensus        72 ~~i~~A~~aGI   82 (298)
T cd06302          72 PVLKKAREAGI   82 (298)
T ss_pred             HHHHHHHHCCC
T ss_conf             99999986798