SUC1 (SUCROSE-PROTON SYMPORTER 1); carbohydrate transmembrane transporter/ sucrose:hydrogen symporter/ sugar:hydrogen ion symporter. Identical to Sucrose transport protein SUC1 (SUC1) [Arabidopsis Thaliana] (GB:Q39232); similar to ATSUC6 (SUCROSE-PROTON SYMPORTER 6), carbohydrate transmembrane transporter/ sucrose:hydrogen symporter/ sugar:hydrogen ion symporter [Arabidopsis thaliana] (TAIR:AT5G43610.1); similar to ATSUC5/SUC5 (SUCROSE-PROTON SYMPORTER 5), carbohydrate transmembrane transporter/ sucrose:hydrogen symporter/ sugar:hydrogen ion symporter [Arabidopsis thaliana] (TAIR:AT1G71890.1); similar to SUC2 (SUCROSE-PROTON SYMPORTER 2), ca