QPT — Nicotiana attenuata

Summary

A4A49_25254 (symbol QPT, also known as NaQPT) in coyote tobacco (Nicotiana attenuata) encodes a nicotinate-nucleotide diphosphorylase (carboxylating) (EC 2.4.2.19), a member of the NadC/ModD family with quinolinate phosphoribosyltransferase domains. The enzyme is associated with quinolinate breakdown, nicotine and alkaloid metabolism and biosynthesis, NAD anabolism, and secondary metabolism. It is linked to responses to jasmonic acid, wounding, and abscisic acid, as well as regulation of gene expression, sumoylation, and embryo development ending in seed dormancy. The protein localises to mitochondria, cytosol, cytoplasm, and nucleus. Associations with traits include heterosis, respiration rate, starch and chlorophyll content, stomatal opening, abscisic acid sensitivity, and flowering time. Related genes in other species are linked to embryo viability and immune response.