>cd06277 PBP1_LacI_like_1 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=90.18 E-value=1.3 Score=22.90 Aligned_cols=181 Identities=10% Similarity=0.058 Sum_probs=99.2 Q ss_pred HHHHHHHHHHCCCCEEEECCEEEECCCCC-CCCCCCCCCCEEEEECHHHHHHHHHHHCCCCCEECCCHHHHHHHHHHCCC Q ss_conf 69999999987982999421000007852-00164475879998484679998862001363000415899997641012 Q gi|255764510|r 12 ALRTQEKIQKMGYIPVMMPLSYFIHDRES-VFLAMQQSYGAIAITSSESLSTLPANFCRHTPIFAIGEASACLARQKGFT 90 (232) Q Consensus 12 a~~~~~~L~~~G~~~i~~Pli~i~~~~~~-~~~~~~~~~d~iiftS~~av~~~~~~~~~~~~~~~vg~~t~~~~~~~~~~ 90 (232) T Consensus 21 ~~gie~~~~~~Gy~lll~~~~~~~~~e~~~~~~l~~~~vdGiI~~~~~~~~~~~~l~~~~~P~V~id~~~~----~~~~~ 96 (268) T cd06277 21 YRAIEEEAKKYGYNLILKFVSDEDEEEFELPSFLEDGKVDGIILLGGISTEYIKEIKELGIPFVLVDHYIP----NEKAD 96 (268) T ss_pred HHHHHHHHHHCCCEEEEEECCCCHHHHHHHHHHHHHCCCCEEEEECCCCHHHHHHHHHCCCCEEEECCCCC----CCCCC T ss_conf 99999999984998999938999899999999999489878999789997999999975998999677689----99998 Q ss_pred CCCCCCCCHHHHHHHHHHHHHCCCCCCEEEEECCCCCCC-------CHHHHHHHCCCEEEEEEEEEECCCCCCHHHHHHH Q ss_conf 235444545678999864220127775389721567562-------0146898469825676887504689998899986 Q gi|255764510|r 91 QIFHGKDNSINLAKIIVEQKVLFTPQKPLIYLGGKPRNF-------HFEDYLIEHKIPLRVIDCYYSQDIAYPETTMKNL 163 (232) Q Consensus 91 ~~~~~~~~~~~~~~ll~~~~~~~~~~~~vl~~~g~~~~~-------~l~~~L~~~g~~v~~~~vY~~~~~~~~~~~~~~~ 163 (232) T Consensus 97 ~V~---~Dn~~a~~~a~~~L~-~~Ghr~I~~i~~~~~~~~~~~R~~Gf~~al~~~gl~~~~~~~~~~~~~--~~~~~~~~ 170 (268) T cd06277 97 CVL---TDNYSGAYAATEYLI-EKGHRKIGFVGDPLYSPSFEERYEGYKKALLDHGIPFNEDYDITEKEE--DEEDIGKF 170 (268) T ss_pred EEE---ECHHHHHHHHHHHHH-HCCCCCEEEEECCCCCCHHHHHHHHHHHHHHHCCCCCCCCEEEECCCC--HHHHHHHH T ss_conf 899---665999999999999-709983699727888812999999999999985999982246625877--79999999 Q ss_pred ----HCCCCEEEEECHHHHHHHHHHCCHHHC----CEEEEECCHHHH Q ss_conf ----237838998078999999971354405----803997188999 Q gi|255764510|r 164 ----LQNADAILFYARSSVLYFFSLPLPAKI----SAAFLCLSNNIA 202 (232) Q Consensus 164 ----~~~~d~i~f~S~~~v~~~~~~~~~~~~----~~~~~~ig~~tA 202 (232) T Consensus 171 ~~~~~~~ptAi~~~nD~~A~g~~~~l~~~g~~vP~Disivgfdd~~~ 217 (268) T cd06277 171 IDELKPLPTAFFCSNDGVAFLLIKVLKEMGIRVPEDVSVIGFDDIEY 217 (268) T ss_pred HHHCCCCCCEEEECCHHHHHHHHHHHHHCCCCCCCCCEEEEECCHHH T ss_conf 98478899879968859999999999985999998628999788789

HHsearch alignment for GI: 255764510 and conserved domain: cd06277