>cd06280 PBP1_LacI_like_4 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=91.25 E-value=1.4 Score=24.68 Aligned_cols=121 Identities=8% Similarity=0.004 Sum_probs=77.8 Q ss_pred CEEEEEEECHHHHHHHHHHHHHHHHHHHCCCCEEEEEHHHHHHHHHH-HHHHHHHHHCCCCCCEEEEEEEEECCCCCHHH Q ss_conf 71799980312899999999999999987995555530014422699-99998633113785356654120006652467 Q gi|254780346|r 6 PHVLIIEARFYENLSAMLFEGCVNVLHSRAVQWSSIVTPGVLEIPAA-VSMVMNAKTRSVTYDGIIVLGVVMRGKTAHCD 84 (149) Q Consensus 6 ~kI~IV~s~~~~~i~~~ll~ga~~~l~~~~~~~~~i~VPGa~EiP~a-~~~~~~~~~~~~~~D~vIaLG~VIkGeT~H~e 84 (149) T Consensus 116 r~I~~l~g~~~-~~~~~R~~Gf~~al~~~gi~~~~~~~~~~~~~~~~~~~~~l---~~~~~~~ai~~~----------nD 181 (263) T cd06280 116 RRIGGLFGNAS-TTGAERRAGYEDAMRRHGLAPDARFVAPTAEAAEAALAAWL---AAPERPEALVAS----------NG 181 (263) T ss_pred CEEEEEECCCC-CCHHHHHHHHHHHHHHCCCCCCEEEECCCHHHHHHHHHHHH---HCCCCCCEEEEC----------CH T ss_conf 66999938998-43999999999999976999763782487678999999998---279999789967----------88 Q ss_pred HHHHHHHHHHHHHHHHCCCCCEEEEECCCCHHHHHHHH------CCCCCCCHHHHHHHHHHHHH Q ss_conf 89999999999999743997056542558899999950------65657456999999999999 Q gi|254780346|r 85 VIAHAVTRGLVDLSINGSLPIGNGIVVVDSEQQAFDRV------SPSHLDRGGCAARSALAMIE 142 (149) Q Consensus 85 ~I~~~v~~gl~~lsl~~~~PI~~gILt~~n~~QA~~R~------~~~~~nkG~eaa~Aal~mi~ 142 (149) T Consensus 182 ~~A~g~l~~l~~~g--~~vP~disviGfDd~~~a~~~~P~LTTv~~~~~~~g~~A~~~Ll~~i~ 243 (263) T cd06280 182 LLLLGALRAVRAAG--LRIPQDLALAGFDNDPWTELVGPGITVIEQPVEEIGRAAMSLLLERLA 243 (263) T ss_pred HHHHHHHHHHHHHC--CCCCCCCEEEEECCHHHHHCCCCCCEEEEECHHHHHHHHHHHHHHHHC T ss_conf 99999999999848--999998789997785888617999779980999999999999999966

HHsearch alignment for GI: 254780346 and conserved domain: cd06280