>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=96.51  E-value=0.013  Score=36.69  Aligned_cols=28  Identities=21%  Similarity=0.355  Sum_probs=22.4

Q ss_pred             CCCEEEEECCCCCCHHHHHHHHHHHCCC
Q ss_conf             8864998888877289999999985781
Q gi|254781047|r   65 SMQGIYLHGDVGQGKSMLMNLFFALVPI   92 (404)
Q Consensus        65 ~~kGlYL~G~VG~GKT~LMdlFy~~l~~   92 (404)
T Consensus        62 ~Ge~vaIVG~sGSGKSTLl~lL~gl~~p   89 (282)
T cd03291          62 KGEMLAITGSTGSGKTSLLMLILGELEP   89 (282)
T ss_pred             CCCEEEEECCCCCHHHHHHHHHHCCCCC
T ss_conf             9999999999998199999999578727