TBG4 — Solanum lycopersicum

Summary

TBG4 (also known as CARSR12) on tomato chromosome 12 encodes a protein with beta-galactosidase activity, sugar binding, transmembrane receptor protein serine/threonine kinase activity, and protein binding, and contains domains including GHD, Glyco_hydro_35_CS, Gly_Hdrlase_35_cat, Glycoside_Hdrlase_35, Galactose-bd-like_sf, and GH_hydrolase_sf. The gene is associated with cell wall disassembly, cell wall assembly, pectin metabolism, galactose metabolism, cell wall polysaccharide anabolism, glycan biosynthesis, suberin biosynthetic process, pigmentation, chlorophyll breakdown, dedifferentiation, and mRNA breakdown. It localises to the apoplast, plant-type cell wall, plasmalemma, vacuole, secretory vesicle, plasmodesma, cytosol, and nucleus. TBG4 is linked to fruit ripening, fruit firmness, fruit weight, carotenoid content, respiration rate, seed maturation, leaf vein morphology, fruit colour, cell wall galactose content, fruit cracking, and premature senescence with leaf cell death. Related genes in other species are associated with fruit softening and cell wall polysaccharide modification.