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'''HUMAN ASPARTYLGLUCOSAMINIDASE''' | '''HUMAN ASPARTYLGLUCOSAMINIDASE''' | ||
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Three-dimensional structure of human lysosomal aspartylglucosaminidase., Oinonen C, Tikkanen R, Rouvinen J, Peltonen L, Nat Struct Biol. 1995 Dec;2(12):1102-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8846222 8846222] | Three-dimensional structure of human lysosomal aspartylglucosaminidase., Oinonen C, Tikkanen R, Rouvinen J, Peltonen L, Nat Struct Biol. 1995 Dec;2(12):1102-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8846222 8846222] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Oinonen, C.]] | [[Category: Oinonen, C.]] | ||
[[Category: Rouvinen, J.]] | [[Category: Rouvinen, J.]] | ||
[[Category: | [[Category: Aspartylglucosaminidase]] | ||
[[Category: | [[Category: Glycosylasparaginase]] | ||
[[Category: | [[Category: Hydrolase]] | ||
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Revision as of 07:34, 2 May 2008
HUMAN ASPARTYLGLUCOSAMINIDASE
Overview
The high resolution crystal structure of human lysosomal aspartylglucosaminidase (AGA) has been determined. This lysosomal enzyme is synthesized as a single polypeptide precursor, which is immediately post-translationally cleaved into alpha- and beta-subunits. Two alpha- and beta-chains are found to pack together forming the final heterotetrameric structure. The catalytically essential residue, the N-terminal threonine of the beta-chain is situated in the deep pocket of the funnel-shaped active site. On the basis of the structure of the enzyme-product complex we present a catalytic mechanism for this lysosomal enzyme with an exceptionally high pH optimum. The three-dimensional structure also allows the prediction of the structural consequences of human mutations resulting in aspartylglucosaminuria (AGU), a lysosomal storage disease.
About this Structure
1APY is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Three-dimensional structure of human lysosomal aspartylglucosaminidase., Oinonen C, Tikkanen R, Rouvinen J, Peltonen L, Nat Struct Biol. 1995 Dec;2(12):1102-8. PMID:8846222 Page seeded by OCA on Fri May 2 10:34:01 2008
