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