Low Molecular Weight Storage Material in Infantile Ceroid Lipofuscinosis (CLN1)
- 1 February 1997
- journal article
- research article
- Published by Georg Thieme Verlag KG in Neuropediatrics
- Vol. 28 (01) , 31-32
- https://doi.org/10.1055/s-2007-973662
Abstract
The identification of the genetic defect in CLN1 as a palmitoyl-protein thioesterase deficiency initiated a search for the lysosomal storage material. Pulse-chase labelling of fibroblasts and lymphoblastoid cell lines with [35S]cysteine revealed the presence of lipid [35S]cysteine material in CLN1 fibroblasts and not in controls, CLN2 or CLN3 patients or other patients with lipidosis. A single band comigrated with the acylcysteine standard and labelling with [3H]palmitate showed a band of material which eluted from the silicic acid column with the phospholipid fraction and which co-migrated with the lipid-[35S]cysteine band. The storage material is tentatively identified as palmitoylcysteine.Keywords
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