Assignment of the gene locus for human α-l-fucosidase to chromosome 1 by analysis of somatic cell hybrids
Abstract
The alpha-L-fucosidases (EC 3.2.1.51) from human and mouse cells could be separated by isoelectric focusing of neuraminidase-treated cell extracts in acrylamide slab gels. Fourteen hybrid clones derived from the fusion of mouse and human cultured fibroblasts and 37 hybrid clones derived from the fusion of human long-term lymphoid lines with mouse RAG cells were tested for expression of human alpha-L-fucosidase. A strong correlation between the expression of the human enzyme and the presence or absence of human chromosome 1 was found. The presence of human alpha-L-fucosidase in clones scored as positive by isoelectric focusing was confirmed by Ouchterlony double immunodiffusion against IgG from rabbits immunized with purified human alpha-L-fucosidase. It is concluded that the structural gene locus for human alpha-L-fucosidase is located on chromosome 1.
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