HHsearch alignment for GI: 254780694 and conserved domain: cd06170
>cd06170 LuxR_C_like C-terminal DNA-binding domain of LuxR-like proteins. This domain contains a helix-turn-helix motif and binds DNA. Proteins belonging to this group are response regulators; some act as transcriptional activators, others as transcriptional repressors. Many are active as homodimers. Many are two domain proteins in which the DNA binding property of the C-terminal DNA binding domain is modulated by modifications of the N-terminal domain. For example in the case of Lux R which participates in the regulation of gene expression in response to fluctuations in cell-population density (quorum-sensing), a signaling molecule, the pheromone Acyl HSL (N-acyl derivatives of homoserine lactone), binds to the N-terminal domain and leads to LuxR dimerization. For others phophorylation of the N-terminal domain leads to multimerization, for example Escherichia coli NarL and Sinorhizobium melilot FixJ. NarL controls gene expression of many respiratory-related operons when environmental
Probab=99.69 E-value=7.5e-17 Score=127.02 Aligned_cols=57 Identities=53% Similarity=0.725 Sum_probs=55.9
Q ss_pred CCHHHHHHHHHHHCCCCHHHHHHHHCCCHHHHHHHHHHHHHHHCCCCHHHHHHHHHH
Q ss_conf 897799999999859997999999499988999999999998079988999999997
Q gi|254780694|r 186 LTGREVECLTWISEGKTSDEIAVILGISRNTVNNYIASIMRKTATKTRSGAIAYAVR 242 (246)
Q Consensus 186 LT~RE~eVl~lia~G~t~~eIA~~L~iS~~TV~~hl~~i~~KLgv~~R~eav~~A~~ 242 (246)
T Consensus 1 LT~rE~~il~~~~~G~s~~eIA~~L~is~~TV~~~~~~i~~Kl~~~~r~elv~~A~r 57 (57)
T cd06170 1 LTPREREVLRLLAEGKTNKEIADILGISEKTVKTHLRNIMRKLGVKSRTQLVAYAIR 57 (57)
T ss_pred CCHHHHHHHHHHHCCCCHHHHHHHHCCCHHHHHHHHHHHHHHHCCCCHHHHHHHHHC
T ss_conf 988999999999807999999999897899999999999998689999999998729