Genomic fragment containing the Tps1 transcription unit. Sequence encoding the trehalose-6-phosphate synthase (TPS) domain has been deleted, resulting in a protein consisting of only the trehalose-6-phosphate phosphatase (TPP) domain.
Tps1TPP fails to rescue Tps1d2
Expression of Tps1TPP fails to rescue the lethality and the decreased circulating glucose and trehalose levels observed in Tps1d2/Tps1d2 mutants.