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purine-nucleoside phosphorylase


Definition: a ribosyltransferase that reversibly catalyzes the phosphorolysis of a purine nucleoside with orthophosphate to produce a purine and a-d-ribose 1-phosphate; an inherited deficiency of this enzyme leads to cellular immunodeficiency.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.