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β-Glucocerebrosidase (also called acid β-glucosidase, D-glucosyl-N-acylsphingosine glucohydrolase, or GCase) is an enzyme with glucosylceramidase activity (EC 3.2.1.45) that cleaves by hydrolysis the β-glycosidic linkage of the chemical glucocerebroside, an intermediate in glycolipid metabolism that is abundant in cell membranes (particularly skin cells). [5]
The disease is caused by a defect in the housekeeping gene for lysosomal glucocerebrosidase (also known as beta-glucosidase, EC 3.2.1.45 ) on the first chromosome (1q22). The enzyme is a 55.6- kilodalton , 497- amino acid -long protein that catalyses the breakdown of glucocerebroside, a cell membrane constituent of red and white blood cells .
In Gaucher's disease, the enzyme glucocerebrosidase is nonfunctional and cannot break down glucocerebroside into glucose and ceramide in the lysosome. [1] Affected macrophages, called Gaucher cells, have a distinct appearance similar to "wrinkled tissue paper" under light microscopy, because the substrates build-up within the lysosome.
Taliglucerase alfa, sold under the brand name Elelyso among others, is a biopharmaceutical medication developed by Protalix and Pfizer. [3] [4] [full citation needed] The drug, a recombinant glucocerebrosidase used to treat Gaucher's disease, is the first plant-made pharmaceutical to win approval by the U.S. Food and Drug Administration (FDA).
Ceramide glucosyltransferase (or glucosylceramide synthase) is a glucosyltransferase enzyme involved in the production of glucocerebrosides (also called glucosylceramides). ). It is responsible for the first step in synthesis of all glycosphingolipids—critical components of cell membranes—from sphingolipids, attaching a glucose molecule (glycosylation) to produce a glucocerebroside product
Velaglucerase alfa, sold under the brand name Vpriv, is a medication used for the treatment of Gaucher disease Type 1. [1] It is a hydrolytic lysosomal glucocerebroside-specific enzyme, which is a recombinant form of glucocerebrosidase.
n/a Ensembl ENSG00000160766 n/a UniProt n a n/a RefSeq (mRNA) n/a n/a RefSeq (protein) n/a n/a Location (UCSC) Chr 1: 155.21 – 155.23 Mb n/a PubMed search n/a Wikidata View/Edit Human Glucosidase, beta; acid, pseudogene, also known as GBAP, is a human gene. References ^ a b c GRCh38: Ensembl release 89: ENSG00000160766 – Ensembl, May 2017 ^ "Human PubMed Reference:". National Center for ...
It is a recombinant DNA-produced analogue of the human enzyme β-glucocerebrosidase. Cerezyme is a freeze-dried medicine containing imiglucerase, manufactured by Genzyme Corporation. It is given intravenously after reconstitution as a treatment for Type 1 and Type 3 [4] Gaucher's disease. It is available in formulations containing 200 or 400 ...