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LMAN1 is a molecular chaperone for the secretion of coagulation factor VIII

Cunningham, M. A. and Pipe, S. W. and Zhang, B. and Hauri, H. -P. and Ginsburg, D. and Kaufman, R. J.. (2003) LMAN1 is a molecular chaperone for the secretion of coagulation factor VIII. Journal of Thrombosis and Haemostasis, Vol. 1, H. 11. pp. 2360-2367.

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Official URL: http://edoc.unibas.ch/dok/A5257753

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Abstract

Combined deficiency of both coagulation factors (F)V and VIII is a rare autosomal recessive bleeding disorder caused by null expression of LMAN1 (previously termed ERGIC-53) in a majority of affected individuals. Previously, a requirement for a functional LMAN1 cycling pathway between the ER and Golgi was demonstrated for efficient secretion of FV and FVIII (Moussalli et al. J Biol Chem 1999; 274: 32569), however, the molecular nature of the interaction between LMAN1 and its cargo was not characterized. Using coimmunoprecipitation of LMAN1 and FVIII from transfected HeLa and COS-1 cells, we demonstrate an interaction between LMAN1 and FVIII in vivo. The interaction was mediated via high mannose-containing asparagine-linked oligosaccharides that are densely situated within the B domain of FVIII, as well as protein-protein interactions. These results are interpreted based on the recent determination of the crystal structure of the carbohydrate recognition domain of LMAN1.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Former Organization Units Biozentrum > Pharmacology/Neurobiology (Hauri)
UniBasel Contributors:Hauri, Hans-Peter
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Blackwell
ISSN:1538-7933
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:22 Mar 2012 14:22
Deposited On:22 Mar 2012 13:29

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