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  • Title: Krabbe disease: isolation and characterization of a full-length cDNA for human galactocerebrosidase.
    Author: Sakai N, Inui K, Fujii N, Fukushima H, Nishimoto J, Yanagihara I, Isegawa Y, Iwamatsu A, Okada S.
    Journal: Biochem Biophys Res Commun; 1994 Jan 28; 198(2):485-91. PubMed ID: 8297359.
    Abstract:
    Human galactocerebrosidase, the enzyme deficient in Krabbe disease, was purified, through several hydrophobic column steps and gel filtration, 22,650-fold from human lymphocytes. Using information on its N-terminal and internal amino acid sequences, and the polymerase chain reaction method, we cloned a full-length cDNA for the enzyme. The deduced amino acid sequence matched all amino acid sequences determined. The 3780 nucleotide sequence included 2007 nucleotides which encoded a single chain peptide of 669 amino acid residues with a 26 amino acid N-terminal signal peptide and six potential asparagine-linked glycosylation sites. The galactocerebrosidase cDNA detected an about 4 kb mRNA band material in human cultured skin fibroblasts. A nonsense mutation was found at codon 369 (GAA-->TAA) in the coding sequence of cDNA amplified from cultured skin fibroblast mRNA from a patient with typical Krabbe disease.
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