Human liver N-acetylgalactosamine 6-sulphatase. Purification and characterization
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چکیده
منابع مشابه
Human liver N-acetylglucosamine-6-sulphate sulphatase. Purification and characterization.
Human N-acetylglucosamine-6-sulphate sulphatase was purified at least 50,000-fold to homogeneity in 78% yield from liver with a simple three-step four-column procedure, which consists of a concanavalin A-Sepharose/Blue A-agarose coupled step, chromatofocusing and Cu2+-chelating Sepharose chromatography. In all, four forms were isolated and partially characterized. Forms A and B, both with a pI ...
متن کاملPurification and properties of N-acetylgalactosamine 6-sulphate sulphatase from human placenta.
1. N-Acetylgalactosamine 6-sulphate sulphatase was purified about 20000-fold from the soluble extract of human placenta with N-acetylgalactosamine 6-sulphate-glucuronic acid-N-acetyl[1-(3)H]galactosaminitol 6-sulphate as substrate in the activity assay. The enzyme appears to be a glycoprotein with a mol.wt. of about 100000 as determined by gel filtration. On gel electrophoresis in the presence ...
متن کاملN-acetylgalactosamine 4-sulphatase protein
Doug A. BROOKS,*: Daniel A. ROBERTSON,* Colleen BINDLOSS,* Tom LITJENS,* Don S. ANSON,* Christoph PETERS,t C. Phillip MORRIS* and John J. HOPWOOD* *Lysosomal Diseases Research Unit, Department of Chemical Pathology, Centre for Medical Genetics, The Women's and Children's Hospital, 72 King William Road, North Adelaide, South Australia, 5006, Australia and tBiochemie 11, Universitgt Gottingen, Go...
متن کاملHuman liver N-acetylglucosamine-6-sulphate sulphatase. Catalytic properties.
Kinetic parameters (Km and kcat.) of the two major forms (A and B) and a minor form (C) of human liver N-acetylglucosamine-6-sulphate sulphatase [Freeman, Clements & Hopwood (1987) Biochem. J. 246, 347-354] were determined with a variety of substrates matching structural aspects of the physiological substrates in vivo, namely heparin, heparan sulphate and keratan sulphate. Enzyme activity is hi...
متن کاملHuman N-acetylgalactosamine-4-sulphatase biosynthesis and maturation in normal, Maroteaux-Lamy and multiple-sulphatase-deficient fibroblasts.
The biosynthesis and maturation of N-acetylgalactosamine-4-sulphatase (4-sulphatase) was studied in normal fibroblasts and in fibroblasts from patients with either mucopolysaccharidosis type VI (MPS VI; Maroteaux-Lamy syndrome) or multiple sulphatase deficiency (MSD). Fibroblasts were incubated in culture medium containing [3H]leucine or [35S]methionine, and radiolabelled 4-sulphatase was isola...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1991
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj2790515