>cd06288 PBP1_sucrose_transcription_regulator Ligand-binding domain of DNA-binding regulatory proteins specific to sucrose that are members of the LacI-GalR family of bacterial transcription repressors. This group includes the ligand-binding domain of DNA-binding regulatory proteins specific to sucrose 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=96.63 E-value=0.035 Score=34.55 Aligned_cols=126 Identities=15% Similarity=0.149 Sum_probs=85.6 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 116 ~~~i~~i~~~~~~~~~~~R~~gf~~a~~~~~i~~~~~~i~~~~~~~~~~~~~~~~ll~~~~~~dai~~~----------~ 185 (269) T cd06288 116 HRRIAFINGEPWMLAAKDRLKGYRQALAEAGIPFDPDLVVHGDWSADDGYEAAAALLDLDDRPTAIFCG----------N 185 (269) T ss_pred CCCEEEEECCCCCHHHHHHHHHHHHHHHHCCCCCCCCEEECCCCCHHHHHHHHHHHHHCCCCCCEECCC----------C T ss_conf 875578748988757999999999999976998664224126776677777779998558998610147----------7 Q ss_pred HHHHHHHHHHHHHHHHHCCCCCEEEEECCCCHHHHHHHHCCC-------CCCCHHHHHHHHHHHHH Q ss_conf 789999999999999743997056542558899999950656-------57456999999999999 Q gi|254780346|r 84 DVIAHAVTRGLVDLSINGSLPIGNGIVVVDSEQQAFDRVSPS-------HLDRGGCAARSALAMIE 142 (149) Q Consensus 84 e~I~~~v~~gl~~lsl~~~~PI~~gILt~~n~~QA~~R~~~~-------~~nkG~eaa~Aal~mi~ 142 (149) T Consensus 186 d~~A~g~~~~l~~~--gi~vP~di~iigfD~~~~~~~~~~P~lTti~q~~~~~g~~A~~~l~~~i~ 249 (269) T cd06288 186 DRMAMGAYQALLER--GLRIPQDVSVVGFDNQEIIAEHLRPPLTTVALPHYEMGRWAVELLLDGIE 249 (269) T ss_pred HHHHHHHHHHHHHC--CCCCCCCEEEEEECCCHHHHHHCCCCCEEEEECHHHHHHHHHHHHHHHHC T ss_conf 89999999999985--99999988999988868999637899649980999999999999999975

HHsearch alignment for GI: 254780346 and conserved domain: cd06288