Biomaterial Database

Assay for cerebroside sulfate (sulfatide) sulfatase in cultured skin fibroblasts with the natural activator protein. 1987

M Lee-Vaupel, and E Conzelmann

Institut für Organische Chemie und Biochemie, Universität Bonn, FRG.

A simple procedure was developed to assay the ability of arylsulfatase A in extracts of cultured skin fibroblasts to degrade the natural substrate, sulfatide, in the presence of the physiological activator protein but without detergents. Inhibitory substances were removed by dialysis and by batch-wise ion-exchange chromatography. The enzyme recoveries during purification were monitored with a newly developed method that employs the chromogenic substrate 4-nitrocatecholsulfate at an incubation temperature of 4 degrees C. The residual sulfatidase activities determined with this procedure in fibroblasts from patients with various forms of MLD correlated well with the severity of the disease.

UI	MeSH Term	Description	Entries
D007966	Leukodystrophy, Metachromatic	An autosomal recessive metabolic disease caused by a deficiency of CEREBROSIDE-SULFATASE leading to intralysosomal accumulation of cerebroside sulfate (SULFOGLYCOSPHINGOLIPIDS) in the nervous system and other organs. Pathological features include diffuse demyelination, and metachromatically-staining granules in many cell types such as the GLIAL CELLS. There are several allelic and nonallelic forms with a variety of neurological symptoms.	Arylsulfatase A Deficiency Disease,Cerebroside Sulphatase Deficiency Disease,ARSA Deficiency,Arylsulfatase A Deficiency,Cerebral sclerosis, Diffuse, Metachromatic Form,Cerebroside Sulfatase Deficiency,Greenfield Disease,Greenfield's Disease,Leukodystrophy, Metachromatic, Adult,Leukodystrophy, Metachromatic, Juvenile,Metachromatic Leukodystrophy,Metachromatic Leukodystrophy, Adult,Metachromatic Leukodystrophy, Adult-Type,Metachromatic Leukodystrophy, Infant,Metachromatic Leukodystrophy, Infant-Type,Metachromatic Leukodystrophy, Juvenile,Metachromatic Leukodystrophy, Juvenile-Type,Metachromatic Leukodystrophy, Late Infantile,Metachromatic Leukoencephalopathy,Sulfatide Lipidosis,ARSA Deficiencies,Adult Metachromatic Leukodystrophies,Adult Metachromatic Leukodystrophy,Adult-Type Metachromatic Leukodystrophies,Adult-Type Metachromatic Leukodystrophy,Arylsulfatase A Deficiencies,Cerebroside Sulfatase Deficiencies,Deficiencies, ARSA,Deficiencies, Arylsulfatase A,Deficiencies, Cerebroside Sulfatase,Deficiency, ARSA,Deficiency, Arylsulfatase A,Deficiency, Cerebroside Sulfatase,Infant Metachromatic Leukodystrophies,Infant Metachromatic Leukodystrophy,Infant-Type Metachromatic Leukodystrophies,Infant-Type Metachromatic Leukodystrophy,Juvenile Metachromatic Leukodystrophies,Juvenile Metachromatic Leukodystrophy,Juvenile-Type Metachromatic Leukodystrophies,Juvenile-Type Metachromatic Leukodystrophy,Leukodystrophies, Adult Metachromatic,Leukodystrophies, Adult-Type Metachromatic,Leukodystrophies, Juvenile Metachromatic,Leukodystrophies, Juvenile-Type Metachromatic,Leukodystrophies, Metachromatic,Leukodystrophy, Adult Metachromatic,Leukodystrophy, Adult-Type Metachromatic,Leukodystrophy, Juvenile Metachromatic,Leukodystrophy, Juvenile-Type Metachromatic,Leukoencephalopathies, Metachromatic,Leukoencephalopathy, Metachromatic,Lipidosis, Sulfatide,Metachromatic Leukodystrophies,Metachromatic Leukodystrophies, Adult,Metachromatic Leukodystrophies, Adult-Type,Metachromatic Leukodystrophies, Infant,Metachromatic Leukodystrophies, Infant-Type,Metachromatic Leukodystrophies, Juvenile,Metachromatic Leukodystrophies, Juvenile-Type,Metachromatic Leukodystrophy, Adult Type,Metachromatic Leukodystrophy, Infant Type,Metachromatic Leukodystrophy, Juvenile Type,Metachromatic Leukoencephalopathies,Sulfatase Deficiencies, Cerebroside,Sulfatase Deficiency, Cerebroside
D008823	Micelles	Particles consisting of aggregates of molecules held loosely together by secondary bonds. The surface of micelles are usually comprised of amphiphatic compounds that are oriented in a way that minimizes the energy of interaction between the micelle and its environment. Liquids that contain large numbers of suspended micelles are referred to as EMULSIONS.	Micelle
D002478	Cells, Cultured	Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.	Cultured Cells,Cell, Cultured,Cultured Cell
D002553	Cerebroside-Sulfatase	An enzyme that catalyzes the hydrolysis of cerebroside 3-sulfate (sulfatide) to yield a cerebroside and inorganic sulfate. A marked deficiency of arylsulfatase A, which is considered the heat-labile component of cerebroside sulfatase, has been demonstrated in all forms of metachromatic leukodystrophy (LEUKODYSTROPHY, METACHROMATIC). EC 3.1.6.8.	Arylsulfatase A,Sulfatidate Sulfatase,Cerebroside Sulfatase,Sulfatase, Sulfatidate
D002848	Chromatography, DEAE-Cellulose	A type of ion exchange chromatography using diethylaminoethyl cellulose (DEAE-CELLULOSE) as a positively charged resin. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	DEAE-Cellulose Chromatography,Chromatography, DEAE Cellulose,DEAE Cellulose Chromatography
D004789	Enzyme Activation	Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme.	Activation, Enzyme,Activations, Enzyme,Enzyme Activations
D005347	Fibroblasts	Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.	Fibroblast
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006863	Hydrogen-Ion Concentration	The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH	pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D006868	Hydrolysis	The process of cleaving a chemical compound by the addition of a molecule of water.