Saccharomyces cerevisiae - Functional Catalogue   nitrogen and sulphur transport (8 ORFs) YGR121c MEP1 ammonia permease of high capacity and moderate affinity YNL142w MEP2 high affinity low capacity ammonia permease YBR294w SUL1 high-affinity sulfate transport protein YPR138c MEP3 low affinity high capacity ammonium permease YPR003c similarity to sulphate transporter proteins YLR092w SUL2 sulfate transporter YAL067c SEO1 suppressor of sulfoxyde ethionine resistance YHL016c DUR3 urea transport protein Back to MIPS Yeast Functional Categories Page. Back to MIPS Genome Project Page. Back to MIPS Homepage. mail questions/comments to webmaster