>cd06292 PBP1_LacI_like_10 Ligand-binding domain of uncharacterized DNA-binding regulatory proteins that are members of the LacI-GalR family of bacterial transcription repressors. This group includes the ligand-binding domain of uncharacterized DNA-binding regulatory proteins that are members of the LacI-GalR family of bacterial transcription repressors. The LacI-GalR family repressors are composed of two functional domains: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal ligand-binding domain, which is homologous to the sugar-binding domain of ABC-type transport systems that contain the type I periplasmic binding protein-like fold. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcription repressor undergoes a conformational change upon ligand binding which in turn changes the DNA binding affinity of the repressor.

Probab=91.02 E-value=1.5 Score=24.54 Aligned_cols=120 Identities=12% Similarity=-0.005 Sum_probs=72.3 Q ss_pred CEEEEEEECHHHHHHHHHHHHHHHHHHHCCCCEEEE---EHHHHHHHHHHH-HHHHHHHHCCCCCCEEEEEEEEECCCCC Q ss_conf 717999803128999999999999999879955555---300144226999-9998633113785356654120006652 Q gi|254780346|r 6 PHVLIIEARFYENLSAMLFEGCVNVLHSRAVQWSSI---VTPGVLEIPAAV-SMVMNAKTRSVTYDGIIVLGVVMRGKTA 81 (149) Q Consensus 6 ~kI~IV~s~~~~~i~~~ll~ga~~~l~~~~~~~~~i---~VPGa~EiP~a~-~~~~~~~~~~~~~D~vIaLG~VIkGeT~ 81 (149) T Consensus 123 ~~i~~i~~~~~~~~~~~R~~G~~~a~~~~~~~~~~~~i~~~~~~~~~~~~~~~~~l-----~~~~~ai~~~--------- 188 (273) T cd06292 123 RRIGFASGPGRTVPRRRKIAGFRAALEEAGLEPPEALVARGMFSVEGGQAAAVELL-----GSGPTAIVAA--------- 188 (273) T ss_pred CEEEEECCCCCCCHHHHHHHHHHHHHHHCCCCCCCEEEEECCCCHHHHHHHHHHHH-----HCCCCEEEEC--------- T ss_conf 80899517877715999999999999984999771489716777788999999997-----4799657745--------- Q ss_pred HHHHHHHHHHHHHHHHHHHCCCCCEEEEECCCCHHHHHHHHC------CCCCCCHHHHHHHHHHHHH Q ss_conf 467899999999999997439970565425588999999506------5657456999999999999 Q gi|254780346|r 82 HCDVIAHAVTRGLVDLSINGSLPIGNGIVVVDSEQQAFDRVS------PSHLDRGGCAARSALAMIE 142 (149) Q Consensus 82 H~e~I~~~v~~gl~~lsl~~~~PI~~gILt~~n~~QA~~R~~------~~~~nkG~eaa~Aal~mi~ 142 (149) T Consensus 189 -nD~~A~g~~~~l~~~--g~~ip~di~VigfD~~~~~~~~~p~LTtI~q~~~~~g~~a~~~ll~~i~ 252 (273) T cd06292 189 -SDLMALGAIRAARRR--GLRVPEDVSVVGYDDSALMAFTDPPLTTVRQPVEEMAAAAVDRLMARID 252 (273) T ss_pred -CCHHHHHHHHHHHHC--CCCCCCCEEEEEECCHHHHHHCCCCCEEEECCHHHHHHHHHHHHHHHHC T ss_conf -859999999999983--9989996599999985899815899679995999999999999999966

HHsearch alignment for GI: 254780346 and conserved domain: cd06292