PNP — Lactuca sativa

Summary

LsPNP, located on chromosome 2 of garden lettuce (Lactuca sativa), encodes a protein with PNPase, S1, and KH domains and is annotated with polyribonucleotide nucleotidyltransferase and 3'-5' exoribonuclease activity, RNA binding, and protein homodimerization activity. This gene is associated with mitochondrial mRNA catabolic processes, RNA processing and breakdown, chloroplast RNA processing, and tRNA and rRNA processing. It is linked to carotene, xanthophyll, and chlorophyll anabolism, as well as starch breakdown and digestion. LsPNP is associated with cellular response to phosphate starvation and localizes to the chloroplast stroma, mitochondria, cytosol, and nucleus. Associations include root fresh weight, pathogen resistance, carotenoid and chlorophyll accumulation, and fosmidomycin resistance. Related genes in other species link the family to carotenoid content, disease tolerance, and photochemical quenching.