Absence of Btn1p in the yeast model for juvenile Batten disease may cause arginine to become toxic to yeast cells.

Abstract excerpt

Lymphoblast cell lines established from individuals with juvenile Batten disease (JNCL) bearing mutations in CLN3 and yeast strains lacking Btn1p (btn1-Delta), the homolog to CLN3, have decreased intracellular levels of arginine and defective lysosomal/vacuolar transport of arginine. It is important to establish the basis for this decrease in arginine levels and whether restoration of arginine levels would be of...

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