mechanisticEstablished
Glycosphingolipid storage disorders
Impaired breakdown of glucosylceramide or galactosylceramide causes storage diseases such as Gaucher and Krabbe disease.1
Glycome Atlas
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Glycome Atlas
concept
Also known as cerebroside, monoglycosylceramides, galactosylceramide, glucosylceramide
Gal (β1-1) → Cer
How to read these diagrams (SNFG)
Each shape is a class of sugar and each colour a specific one. Structures read right to left, with the reducing end (the point of attachment) on the right.
Plain-language answer
Cerebrosides are the simplest sugar-fats in the glycolipid family, with just one sugar (galactose or glucose) attached to a ceramide lipid. Galactose-bearing ones are especially abundant in the myelin that insulates nerves.1
Galactosylceramide is a major building block of myelin, so cerebroside metabolism matters for nerve insulation. Inherited defects in breaking these molecules down cause serious storage diseases.1
Technical detail
Cerebrosides are monoglycosylceramides (galactosylceramide and glucosylceramide) that serve as structural membrane lipids, myelin components, and biosynthetic precursors of more complex glycosphingolipids.1
Galactosylceramide predominates in myelin and neural tissue, while glucosylceramide is the common precursor from which the majority of complex glycosphingolipids are elaborated.1
Defective degradation of specific cerebrosides underlies lysosomal storage disorders, illustrating how tightly cerebroside turnover must be balanced.1
Human relevance
Impaired breakdown of glucosylceramide or galactosylceramide causes storage diseases such as Gaucher and Krabbe disease.1
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References