>cd06278 PBP1_LacI_like_2 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=90.84 E-value=1.5 Score=24.43 Aligned_cols=124 Identities=15% Similarity=-0.023 Sum_probs=74.7 Q ss_pred CCEEEEEEECHHHHHHHHHHHHHHHHHHHCCCCEEEEEH-HHHHHHHH-HHHHHHHHHHCCCCCCEEEEEEEEECCCCCH Q ss_conf 871799980312899999999999999987995555530-01442269-9999986331137853566541200066524 Q gi|254780346|r 5 IPHVLIIEARFYENLSAMLFEGCVNVLHSRAVQWSSIVT-PGVLEIPA-AVSMVMNAKTRSVTYDGIIVLGVVMRGKTAH 82 (149) Q Consensus 5 ~~kI~IV~s~~~~~i~~~ll~ga~~~l~~~~~~~~~i~V-PGa~EiP~-a~~~~~~~~~~~~~~D~vIaLG~VIkGeT~H 82 (149) T Consensus 115 h~~I~~i~~~~~~~~~~~R~~G~~~al~~~gl~~~~~~~~~~~~~~g~~~~~~ll---~~~~~ptAi~~~---------- 181 (266) T cd06278 115 CRRIAFIGGPADTSTSRERERGFRDALAAAGVPVVVEEAGDYSYEGGYEAARRLL---ASRPRPDAIFCA---------- 181 (266) T ss_pred CCEEEEEECCCCCCHHHHHHHHHHHHHHHCCCCCEEEECCCCCHHHHHHHHHHHH---HCCCCCCCCEEC---------- T ss_conf 9889999688888149999999999999869994389818999899999999998---459998862507---------- Q ss_pred HHHHHHHHHHHHHHHHHHCCCCCEEEEECCCCHHHHHHHHC------CCCCCCHHHHHHHHHHHHH Q ss_conf 67899999999999997439970565425588999999506------5657456999999999999 Q gi|254780346|r 83 CDVIAHAVTRGLVDLSINGSLPIGNGIVVVDSEQQAFDRVS------PSHLDRGGCAARSALAMIE 142 (149) Q Consensus 83 ~e~I~~~v~~gl~~lsl~~~~PI~~gILt~~n~~QA~~R~~------~~~~nkG~eaa~Aal~mi~ 142 (149) T Consensus 182 nD~~A~g~l~~l~~-~~g~~vP~disvvgfD~~~~~~~~~p~LTtv~~~~~~~g~~A~~~Ll~~i~ 246 (266) T cd06278 182 NDLLAIGVMDAARQ-EGGLRVPEDVSVIGFDDIPMAAWPSYQLTTVRQPVDRMAEEAVDLLEARIE 246 (266) T ss_pred CHHHHHHHHHHHHH-HCCCCCCCCEEEEEECCHHHHHCCCCCEEEEECCHHHHHHHHHHHHHHHHC T ss_conf 78999999999997-358888886699987880898544998489983999999999999999971

HHsearch alignment for GI: 254780346 and conserved domain: cd06278