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The Journal of Biochemistry
Vol. 120 (1996) No. 2 P 236-241

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We have cloned a cDNA that codes for a putative human UDP-galactose translocator (UGT) protein. The cDNA contained an open reading frame of 1, 179 base pairs encoding a novel protein of 393 amino acids. Introduction of the open reading frame sequence into a UGT-deficient mouse cell line, Had-1, complemented the genetic defect of the mutant, namely the inability to transport UDP-galactose from the cytosol to the Golgi lumen, as judged from the lectin-sensitivity spectrum of the transformant. To our knowledge, this is the first mammalian nucleotide-sugar translocator whose cDNA sequence has been described.

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