Abstract
Analysis of immunologic cross-reacting material in Chinese hamster-human somatic cell hybrids allowed assignment of the structural gene for glucocerebrosidase (glucosylceramidase; beta-D-glucosyl-N-acylsphingosine glucohydrolase, EC 3.2.1.45) to chromosome 1 bands q21-q32. In situ hybridization of a radiolabeled human glucocerebrosidase cDNA to high resolution human chromosomes demonstrated that a single locus encoding glucocerebrosidase is on 1q21, adjacent to a region of chromosome 1 (1qh) abundant in structural heteromorphisms. We also have identified a hydrophobic leader polypeptide encoded by this locus, permitting a more complete description of the biosynthesis of the enzyme. These results suggest that the type-specific protein polymorphisms in Gaucher disease result from mutations at this single locus, whose segregation might be followed by linkage to visible chromosomal heteromorphisms.
MeSH Terms
Animals
Cell Line
Chromosome Mapping
Chromosomes, Human, 1-3
Cricetinae
Cricetulus
Gaucher Disease/enzymology,genetics
Genes
Glucosidases/genetics
Glucosylceramidase/genetics
Humans
Hybrid Cells/enzymology
Molecular Weight
Nucleic Acid Hybridization
Protein Sorting Signals/genetics
Chemicals
Protein Sorting Signals
Glucosidases
Glucosylceramidase
Authors & Affiliations
8 authors, click to expand affiliations / ORCID
Ginns E I
Choudary P V
Tsuji S
Martin B
Stubblefield B
Sawyer J
Hozier J
Barranger J A
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