Description : (at3g59030 : 549.0) Encodes a proton antiporter. Involved in the transportation of proanthocyanidin precursors into the vacuole. In vitro transport experiments showed that cyanidin-3-O-glucoside (anthocyanin) was an effective substrate, whereas the proanthocyanidin precursor epicatechin was not transported. However catechin-3-O-glucoside inhibited anthocyanin transport in a dose-dependent manner suggesting that glycosylated epicatechin is the in vivo substrate. Recessive mutation has strong reduction of proanthocyanidin deposition in vacuoles and has reduced dormancy. Expressed in the endothelium of ovules and developing seeds.; TRANSPARENT TESTA 12 (TT12); CONTAINS InterPro DOMAIN/s: Multi antimicrobial extrusion protein MatE (InterPro:IPR002528); BEST Arabidopsis thaliana protein match is: MATE efflux family protein (TAIR:AT3G21690.1); Has 8592 Blast hits to 8553 proteins in 1935 species: Archae - 188; Bacteria - 5730; Metazoa - 144; Fungi - 324; Plants - 1347; Viruses - 0; Other Eukaryotes - 859 (source: NCBI BLink). & (reliability: 1098.0) & (original description: no original description)
Condition specificity: 1 h after dark (SPM: 0.35, entropy: 2.63, tau: 0.21)