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Cleft lip and palate transmembrane protein 1 (Clptm1) is a multi-transmembrane protein that in humans is encoded by the CLPTM1gene. Clptm1 was characterized in 1995 as a surface membrane protein in the thymus during embryonic development in mice and is suggested to have an important role in T-cell development. A more recent study shows a role in GABAA receptor subunit intracellular anchoring and regulation resulting in an influence on synaptic strength Clptm1 belongs to a family of several eukaryotic cleft lip and palate transmembrane protein 1 sequences.
Cleft lip with or without cleft palate is a common birth defect that is genetically complex. The non-syndromic forms have been studied genetically using linkage and candidate-gene association studies with only partial success in defining the loci responsible for orofacial clefting. CLPTM1 encodes a transmembrane protein and has strong homology to two Caenorhabditis elegans genes, suggesting that CLPTM1 may belong to a new gene family. This family also contains the Homo sapiens cisplatin resistance related protein CRR9p which is associated with CDDP-induced apoptosis.
"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
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Takeuchi T, Kuro-o M, Miyazawa H, Ohtsuki Y, Yamamoto H (July 1997). "Transgenic expression of a novel thymic epithelial cell antigen stimulates aberrant development of thymocytes". Journal of Immunology. 159 (2): 726–733. doi:10.4049/jimmunol.159.2.726. PMID9218588.
Takeuchi T, Tamamoto T, Tamura H, Yamamoto H (April 1995). "Characterization of a 50 kDa surface membrane protein on thymic stromal cells as an important factor for early T cell development". International Immunology. 7 (4): 583–590. doi:10.1093/intimm/7.4.583. PMID7547685.
Yoshiura K, Machida J, Daack-Hirsch S, Patil SR, Ashworth LK, Hecht JT, Murray JC (December 1998). "Characterization of a novel gene disrupted by a balanced chromosomal translocation t(2;19)(q11.2;q13.3) in a family with cleft lip and palate". Genomics. 54 (2): 231–240. doi:10.1006/geno.1998.5577. PMID9828125.
Yamamoto K, Okamoto A, Isonishi S, Ochiai K, Ohtake Y (February 2001). "A novel gene, CRR9, which was up-regulated in CDDP-resistant ovarian tumor cell line, was associated with apoptosis". Biochemical and Biophysical Research Communications. 280 (4): 1148–1154. doi:10.1006/bbrc.2001.4250. PMID11162647.
Further reading
Maruyama K, Sugano S (January 1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–174. doi:10.1016/0378-1119(94)90802-8. PMID8125298.
Takeuchi T, Kuro-o M, Miyazawa H, Ohtsuki Y, Yamamoto H (July 1997). "Transgenic expression of a novel thymic epithelial cell antigen stimulates aberrant development of thymocytes". Journal of Immunology. 159 (2): 726–733. doi:10.4049/jimmunol.159.2.726. PMID9218588.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, Suyama A, Sugano S (October 1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–156. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
Rossi MR, Hawthorn L, Platt J, Burkhardt T, Cowell JK, Ionov Y (September 2005). "Identification of inactivating mutations in the JAK1, SYNJ2, and CLPTM1 genes in prostate cancer cells using inhibition of nonsense-mediated decay and microarray analysis". Cancer Genetics and Cytogenetics. 161 (2): 97–103. doi:10.1016/j.cancergencyto.2005.02.006. PMID16102578.
