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The Cohen syndrome-associated protein COH1 is a novel giant golgi matrix protein required for golgi integrity

Seifert, W., Kühnisch, J., Maritzen, T., Horn, D., Haucke, V. and Hennies, Hans C. (2011) The Cohen syndrome-associated protein COH1 is a novel giant golgi matrix protein required for golgi integrity. Journal of Biological Chemistry, 286 (43). pp. 37665-37675. ISSN 0021-9258

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Abstract

Loss-of-function mutations in the gene COH1, also known as VPS13B, lead to autosomal recessive Cohen syndrome. However, the cellular distribution and function of the encoded protein COH1 (3997 amino acids), which lacks functional homologies to other mammalian proteins, have remained enigmatic. We show here that COH1 is a peripheral Golgi membrane protein that strongly co-localizes with the cis-Golgi matrix protein GM130. Consistent with its subcellular localization, COH1 depletion using RNAi causes fragmentation of the Golgi ribbon into ministacks. Disruption of Golgi organization observed in fibroblasts from Cohen syndrome patients suggests that Golgi dysfunction contributes to Cohen syndrome pathology. In conclusion, our findings establish COH1 as a Golgi-associated matrix protein required for Golgi integrity.

Item Type: Article
Additional Information: Unmapped bibliographic data: ST - The Cohen syndrome-associated protein COH1 is a novel giant golgi matrix protein required for golgi integrity [Field not mapped to EPrints] LB - 99 [Field not mapped to EPrints] RP - Not in File [Field not mapped to EPrints]
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QH Natural history > QH426 Genetics
Schools: School of Applied Sciences
Depositing User: Hans Hennies
Date Deposited: 06 Jul 2016 15:39
Last Modified: 29 Jul 2016 13:12
URI: http://eprints.hud.ac.uk/id/eprint/28774

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