>cd03291 ABCC_CFTR1 The CFTR subfamily domain 1. The cystic fibrosis transmembrane regulator (CFTR), the product of the gene mutated in patients with cystic fibrosis, has adapted the ABC transporter structural motif to form a tightly regulated anion channel at the apical surface of many epithelia. Use of the term assembly of a functional ion channel implies the coming together of subunits, or at least smaller not-yet functional components of the active whole. In fact, on the basis of current knowledge only the CFTR polypeptide itself is required to form an ATP- and protein kinase A-dependent low-conductance chloride channel of the type present in the apical membrane of many epithelial cells. CFTR displays the typical organization (IM-ABC)2 and carries a characteristic hydrophilic R-domain that separates IM1-ABC1 from IM2-ABC2.

Probab=97.25 E-value=0.0089 Score=39.18 Aligned_cols=124 Identities=18% Similarity=0.218 Sum_probs=63.1 Q ss_pred EEEEEEECCCCCCCCCEEEEEECCCCCCHHHHHHHHHHHHHHHHCCCCCCHHHC-----CCCCCCE---EEEEEECCCCC Q ss_conf 443456358777766439999677844078999999999999971985303532-----0682210---56765237661 Q gi|254780750|r 635 IANDCDLSCPNDKNSGKLWLLTGPNMGGKSTFLRQNALIVIMAQMGSYVPASYA-----HIGIVDK---LFSRVGSADNL 706 (920) Q Consensus 635 VpNdi~l~~~~~~~~~~~~iiTGpNmgGKSt~lRqval~vilAQiG~fVPA~~a-----~i~~~D~---IftRiGa~D~l 706 (920) T Consensus 52 VLk~Isf~I----~~Ge~vaIVG~sGSGKSTLl~lL~--------gl~~p~~G~I~~~g~i~~v~Q~~~lf~~-TireNI 118 (282) T cd03291 52 VLKNINLKI----EKGEMLAITGSTGSGKTSLLMLIL--------GELEPSEGKIKHSGRISFSSQFSWIMPG-TIKENI 118 (282) T ss_pred EEECEEEEE----CCCCEEEEECCCCCHHHHHHHHHH--------CCCCCCCCEEEECCEEEEECCCCCCCCC-CHHHHH T ss_conf 141648998----499999999999981999999995--------7872786589999999986574422671-099997 Q ss_pred CCCCCHH---HHHHHHHH---HHHH------------------------------HCCCCCEEEEECCCCCCCHHHHH-- Q ss_conf 1385328---99999999---9999------------------------------58998569993258898805679-- Q gi|254780750|r 707 ASGRSTF---MVEMIETA---SILN------------------------------QATNQSFVILDEIGRGTATLDGL-- 748 (920) Q Consensus 707 ~~g~STF---~vEm~e~~---~IL~------------------------------~at~~SLVllDElGrGTst~DG~-- 748 (920) T Consensus 119 ~~g~~~~~~~~~~~~~~~~l~~~i~~lp~g~~t~vge~G~~LSGGQkQRlaiARALl~~p~IliLDEp---TS~LD~~tE 195 (282) T cd03291 119 IFGVSYDEYRYKSVVKACQLEEDITKFPEKDNTVLGEGGITLSGGQRARISLARAVYKDADLYLLDSP---FGYLDVFTE 195 (282) T ss_pred HCCCCCCHHHHHHHHHHHCCHHHHHHCCCCCCCEECCCCCCCCHHHHHHHHHHHHHHCCCCEEEEECC---CCCCCHHHH T ss_conf 51688688999999998514999984634255230036775899999999999998428998998687---766898789 Q ss_pred -HHHHHHHHHHHHHCCCEEEEECCCHHHH Q ss_conf -9999999999972698499974875797 Q gi|254780750|r 749 -SIAWATIEYLHETNRCRGLLATHFHELT 776 (920) Q Consensus 749 -aiA~aile~l~~~~~~~~lfaTHy~eL~ 776 (920) T Consensus 196 ~~I~~~~l~~~~--~~kTvI~ItHrL~~i 222 (282) T cd03291 196 KEIFESCVCKLM--ANKTRILVTSKMEHL 222 (282) T ss_pred HHHHHHHHHHHH--CCCEEEEEECCHHHH T ss_conf 999999999986--899899993788889

HHsearch alignment for GI: 254780750 and conserved domain: cd03291