The cataract-associated protein TMEM114, and TMEM235, are glycosylated transmembrane proteins that are distinct from claudin family members |
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Authors: | Maher Geoffrey J Hilton Emma N Urquhart Jill E Davidson Alice E Spencer Helen L Black Graeme C Manson Forbes D |
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Institution: | School of Biomedicine, The University of Manchester, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK. |
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Abstract: | A novel gene, TMEM114, was annotated as a member of the claudin gene family and was subsequently associated as a cause of autosomal dominant cataract because of a translocation in its putative promoter. Our bioinformatic and molecular analyses of TMEM114, and the closely related TMEM235, demonstrate that these proteins are more closely related to members of the voltage dependent calcium channel gamma subunit family. TMEM114 and TMEM235 differed from claudins in terms of localisation in polarised epithelial cells and by the presence of N-linked glycans. By gene expression knockdown in Xenopus tropicalis we also demonstrate a role for Tmem114 in eye development. |
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