NCBI Accession #
NP_173685.1
NCBI GenBank Nucleotide #
NM_102118.4
NCBI Official Full Name
sucrose-proton symporter 2
NCBI Official Symbol
SUC2
NCBI Official Synonym Symbols
ARABIDOPSIS THALIANA SUCROSE-PROTON SYMPORTER 2; ATSUC2; SUCROSE TRANSPORTER 1; SUCROSE-H+ SYMPORTER; sucrose-proton symporter 2; SUT1; T22J18.12; T22J18_12
NCBI Protein Information
sucrose-proton symporter 2
NCBI Summary
Encodes for a high-affinity transporter essential for phloem loading and long-distance transport. A major sucrose transporter, AtSUC2 can also transport a wide range of physiological and synthetic glucose conjugates with both alpha- or beta-linkage.
UniProt Synonym Gene Names
SUT1
UniProt Protein Name
Sucrose transport protein SUC2
UniProt Synonym Protein Names
Sucrose permease 2; Sucrose transporter 1; Sucrose-proton symporter 2
UniProt Primary Accession #
Q39231
UniProt Secondary Accession #
O80550; Q8RWQ6
UniProt Related Accession #
Q39231
UniProt Comments
Responsible for the transport of sucrose into the cell, with the concomitant uptake of protons (symport system). Can also transport other glucosides such as maltose, arbutin (hydroquinone-beta-D-glucoside), salicin (2-(hydroxymethyl)phenyl-beta-D-glucoside), alpha-phenylglucoside, beta-phenylglucoside, alpha-paranitrophenylglucoside, beta-paranitrophenylglucoside, and paranitrophenyl-beta-thioglucoside. May also transport biotin. Required for apoplastic phloem sucrose loading in source tissues (e.g. leaves) in order to transport it to sink tissues (e.g. roots, flowers).