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Measurements of CFTR-Mediated Cl- Secretion in Human Rectal Biopsies Constitute...
Sousa, Marisa; Servidoni, Maria F.; Vinagre, Adriana M.; Ramalho, Anabela S.; Bonadia, Luciana C.; Felício, Verónica; Ribeiro, Maria A..BACKGROUND: Cystic Fibrosis (CF) is caused by ∼1,900 mutations in the CF transmembrane conductance regulator (CFTR) gene encoding for a cAMP-regulated chloride (Cl(-)) channel expressed in several epithelia. Clinical features are dominated by respiratory symptoms, but there is variable organ involvement thus causing diagnostic dilemmas, especially for non-classic cases. METHODOLOGY/PRINCIPAL FINDINGS: To furth...
The contribution of CK2 and spleen tyrosine kinase (SYK) to CFTR trafficking an...
Luz, Simão; Kongsuphol, Patthara; Mendes, Ana Isabel; Romeiras, Francisco; Sousa, Marisa; Schreiber, Rainer; Matos, Paulo; Jordan, Peter; Mehta, AnilPreviously, the pleiotropic “master kinase” casein kinase 2 (CK2) was shown to interact with CFTR, the protein responsible for cystic fibrosis (CF). Moreover, CK2 inhibition abolished CFTR conductance in cell-attached membrane patches, native epithelial ducts, and Xenopus oocytes. CFTR possesses two CK2 phosphorylation sites (S422 and T1471), with unclear impact on its processing and trafficking. Here, we inves...
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