Glycosylasparaginase

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Function

Glycosylasparaginase or aspartylglucosaminidase (AGA) hydrolyzes a number of β-aspartyl amides including asparagine. AGA contains α and β subunits which derive from a precursor (PAGA) which is cleaved post-translationally[1].

Disease

AGA deficiency is the cause of the human lysosomal disease aspartylglycosaminuria[2].

Structural highlights

. Mammalian [3]. Water molecules shown as red spheres.

See also Asparaginase

Structure of glycosylated human glycosylasparaginase α (magenta and cyan) and β (green and yellow) subunits complex with asparagine (PDB code 2gl9).

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3D structures of glycosylasparaginase3D structures of glycosylasparaginase

Updated on 09-April-2023

ReferencesReferences

  1. Qian X, Guan C, Guo HC. A dual role for an aspartic acid in glycosylasparaginase autoproteolysis. Structure. 2003 Aug;11(8):997-1003. PMID:12906830
  2. Ikonen E, Peltonen L. Mutations causing aspartylglucosaminuria (AGU): a lysosomal accumulation disease. Hum Mutat. 1992;1(5):361-5. PMID:1301945 doi:http://dx.doi.org/10.1002/humu.1380010503
  3. Wang Y, Guo HC. Crystallographic snapshot of a productive glycosylasparaginase-substrate complex. J Mol Biol. 2007 Feb 9;366(1):82-92. Epub 2006 Sep 26. PMID:17157318 doi:10.1016/j.jmb.2006.09.051

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