Tmem165 Reference Search Result - Rat Genome Database

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RGD ID	Title	Citation	Abstract	PubMed	Pub Date
598114488	TMEM165 deficiency causes a congenital disorder of glycosylation.	Foulquier F, etal., Am J Hum Genet. 2012 Jul 13;91(1):15-26. doi: 10.1016/j.ajhg.2012.05.002. Epub 2012 Jun 7.	Protein glycosylation is a complex process that depends not only on the activities of several enzymes and transporters but also on a subtle balance between vesicular Golgi trafficking, compartmental pH, and ion homeostasis. Through a combination of autozygosity mapping and expression analysis in two ... (more) siblings with an abnormal serum-transferrin isoelectric focusing test (type 2) and a peculiar skeletal phenotype with epiphyseal, metaphyseal, and diaphyseal dysplasia, we identified TMEM165 (also named TPARL) as a gene involved in congenital disorders of glycosylation (CDG). The affected individuals are homozygous for a deep intronic splice mutation in TMEM165. In our cohort of unsolved CDG-II cases, we found another individual with the same mutation and two unrelated individuals with missense mutations in TMEM165. TMEM165 encodes a putative transmembrane 324 amino acid protein whose cellular functions are unknown. Using a siRNA strategy, we showed that TMEM165 deficiency causes Golgi glycosylation defects in HEK cells.	22683087	2012-07-13
11573103	Glycosylation abnormalities in Gdt1p/TMEM165 deficient cells result from a defect in Golgi manganese homeostasis.	Potelle S, etal., Hum Mol Genet. 2016 Apr 15;25(8):1489-500. doi: 10.1093/hmg/ddw026. Epub 2016 Feb 1.	Congenital disorders of glycosylation (CDG) are severe inherited diseases in which aberrant protein glycosylation is a hallmark. From this genetically and clinically heterogenous group, a significant subgroup due to Golgi homeostasis defects is emerging. We previously identified TMEM165 ... (more) ight:700;'>TMEM165 as a Golgi protein involved in CDG. Extremely conserved in the eukaryotic reign, the molecular mechanism by which TMEM165 deficiencies lead to Golgi glycosylation abnormalities is enigmatic. AsGDT1 is the ortholog of TMEM165 in yeast, both gdt1¿ null mutant yeasts and TMEM165 depleted cells were used. We highlighted that the observed Golgi glycosylation defects due to Gdt1p/TMEM165 deficiency result from Golgi manganese homeostasis defect. We discovered that in both yeasts and mammalian Gdt1p/TMEM165-deficient cells, Mn(2+) supplementation could restore a normal glycosylation. We also showed that the GPP130 Mn(2+) sensitivity was altered in TMEM165 depleted cells. This study not only provides novel insights into the molecular causes of glycosylation defects observed in TMEM165-deficient cells but also suggest that TMEM165 is a key determinant for the regulation of Golgi Mn(2+) homeostasis.	27008884	2016-04-15