2006-11-01
Mutations in TMEM76* cause mucopolysaccharidosis IIIC (Sanfilippo C syndrome)
Publication
Publication
American Journal of Human Genetics , Volume 79 - Issue 5 p. 807- 819
Mucopolysaccharidosis IIIC (MPS IIIC, or Sanfilippo C syndrome) is a lysosomal storage disorder caused by the inherited deficiency of the lysosomal membrane enzyme acetyl-coenzyme A:α-glucosaminide N-acetyltransferase (N-acetyltransferase), which leads to impaired degradation of heparan sulfate. We report the narrowing of the candidate region to a 2.6-cM interval between D8SI051 and D8SI83I and the identification of the transmembrane protein 76 gene (TMEM76), which encodes a 73-kDa protein with predicted multiple transmembrane domains and glycosylation sites, as the gene that causes MPS IIIC when it is mutated. Four nonsense mutations, 3 frameshift mutations due to deletions or a duplication, 6 splice-site mutations, and 14 missense mutations were identified among 30 probands with MPS IIIC. Functional expression of human TMEM76 and the mouse ortholog demonstrates that it is the gene that encodes the lysosomal N-acetyltransferase and suggests that this enzyme belongs to a new structural class of proteins that transport the activated acetyl residues across the cell membrane.
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| doi.org/10.1086/508294, hdl.handle.net/1765/58481 | |
| American Journal of Human Genetics | |
| Organisation | Department of Clinical Genetics |
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Hřebíček, M., Mrázová, L., Seyrantepe, V., Durand, S., Roslin, N., Nosková, L., … Pshezhetsky, A. (2006). Mutations in TMEM76* cause mucopolysaccharidosis IIIC (Sanfilippo C syndrome). American Journal of Human Genetics, 79(5), 807–819. doi:10.1086/508294 |
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