Two major glycoasparagines (2-acetamido-N-(4'-L-aspartyl)-2-deoxy-beta-D-glycosylamines) were isolated from the urine of patients with aspartylglycosylaminuria (AGU). They were composed of equimolar amounts of sialic acid, galactose, glucosamine, and aspartic acid. They were isomeric with respect to the position of sialic acid attachment, since they produced the same glycoasparagine on incubation with the neuraminidase from Clostridium perfringens. The structure of the resulting sialic acid-free glycoasparagine was determined as beta-Gal-(1 leads to 4)-beta-GlcNAc-Asn based on the following findings. It produced galactose on incubation with beta-galactosidase, and N-acetyllactosamine and aspartic acid on incubation with 4-L-aspartylglycosylamine amindo hydrolase.
Characterization of two glycoasparagines isolated from the urine of patients with aspartylglycosylaminuria (AGU). Publishing Authors By Initials
Characterization of two glycoasparagines isolated from the urine of patients with aspartylglycosylaminuria (AGU). Journal Published:
PUBLICATION TYPE: Journal Article
Journal: Journal of biochemistry
VOLUME: 78
Page Numbers: 673-8
Journal Abbreviation: J. Biochem.
ISSN: 0021-924X
DAY: 19
MONTH: Oct
YEAR: 1975
Characterization of two glycoasparagines isolated from the urine of patients with aspartylglycosylaminuria (AGU). Information
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LANGUAGE: eng
NlmUniqueID: 376600
Characterization of two glycoasparagines isolated from the urine of patients with aspartylglycosylaminuria (AGU). Keywords Mesh Terms:
KEYWORDS: Sialic Acids
MESH TERMS: urine
Chemical & Substance for Abstract: Characterization of two glycoasparagines isolated from the urine of patients with aspartylglycosylaminuria (AGU). Information
Substance Name: Aspartylglucosylaminase
Registry Number: EC 3.5.1.26
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MEDLINETA: J Biochem
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