>cd06284 PBP1_LacI_like_6 Ligand-binding domain of an uncharacterized transcription regulator from Actinobacillus succinogenes and its close homologs from other bacteria. This group includes the ligand-binding domain of an uncharacterized transcription regulator from Actinobacillus succinogenes and its close homologs from other bacteria. This group belongs to the the LacI-GalR family repressors and 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.

Probab=96.74 E-value=0.029 Score=35.13 Aligned_cols=126 Identities=17% Similarity=0.144 Sum_probs=87.7 Q ss_pred CCEEEEEEECHHHHHHHHHHHHHHHHHHHCCCCEEEE-EHHHHHHHHHHHHHHHHHHHCCCCCCEEEEEEEEECCCCCHH Q ss_conf 8717999803128999999999999999879955555-300144226999999863311378535665412000665246 Q gi|254780346|r 5 IPHVLIIEARFYENLSAMLFEGCVNVLHSRAVQWSSI-VTPGVLEIPAAVSMVMNAKTRSVTYDGIIVLGVVMRGKTAHC 83 (149) Q Consensus 5 ~~kI~IV~s~~~~~i~~~ll~ga~~~l~~~~~~~~~i-~VPGa~EiP~a~~~~~~~~~~~~~~D~vIaLG~VIkGeT~H~ 83 (149) T Consensus 115 ~~~i~~i~~~~~~~~~~~R~~Gf~~a~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~~~~~~ai~~~----------n 184 (267) T cd06284 115 HRRIALITGPRDNPLARDRLEGYRQALAEAGLPADEELIQEGDFSLESGYAAARRLLALPDRPTAIFCF----------S 184 (267) T ss_pred CCEEEEECCCCCCHHHHHHHHHHHHHHHHCCCCCCCEEEECCCCCHHHHHHHHHHHHHCCCCCCEEEEC----------C T ss_conf 976999628888725999999999999983998551277327876777889999999659999802657----------8 Q ss_pred HHHHHHHHHHHHHHHHHCCCCCEEEEECCCCHHHHHHHHC------CCCCCCHHHHHHHHHHHHH Q ss_conf 7899999999999997439970565425588999999506------5657456999999999999 Q gi|254780346|r 84 DVIAHAVTRGLVDLSINGSLPIGNGIVVVDSEQQAFDRVS------PSHLDRGGCAARSALAMIE 142 (149) Q Consensus 84 e~I~~~v~~gl~~lsl~~~~PI~~gILt~~n~~QA~~R~~------~~~~nkG~eaa~Aal~mi~ 142 (149) T Consensus 185 D~~A~g~~~~l~~~g--~~vP~di~vigfd~~~~~~~~~p~lttv~~~~~~~g~~a~~~ll~~i~ 247 (267) T cd06284 185 DEMAIGAISALKELG--LRVPEDISVVGFDDIDFARMTTPPLTTIRQPRYEIGRTAAELLLDIIE 247 (267) T ss_pred CHHHHHHHHHHHHCC--CCCCCEEEEEEECCHHHHHHCCCCCEEEEECHHHHHHHHHHHHHHHHC T ss_conf 688999999999839--999962799987784899824898339985999999999999999976

HHsearch alignment for GI: 254780346 and conserved domain: cd06284