NCBI Accession #
NP_567241.1
NCBI GenBank Nucleotide #
NM_116484.3
NCBI Official Full Name
UDP-xylosyltransferase 2
NCBI Official Synonym Symbols
ARABIDOPSIS THALIANA UDP-XYLOSYLTRANSFERASE 2; ATXT2; AtXXT2; T10P11.20; UDP-xylosyltransferase 2; XXT2; XYG XYLOSYLTRANSFERASE 2
NCBI Protein Information
UDP-xylosyltransferase 2
NCBI Summary
Encodes a protein with xylosyltransferase activity, which is specific for UDP-xylose as donor substrate and for oligosaccharides with a degree of polymerization >4. Although the enzyme utilizes either cellopentaose or cellohexaose, its activity is four-fold higher with cellohexaose as an acceptor compared to cellopentaose. The enzyme is able to add several xylosyl residues to the acceptor forming mono-, di- and trixylosylated polysaccharides.
UniProt Synonym Gene Names
GT2; GTL5; XT2; AtXT2; AtGT2
UniProt Protein Name
Xyloglucan 6-xylosyltransferase 2
UniProt Synonym Protein Names
Putative glycosyltransferase 2 (EC:2.4.-.-); AtGT2
UniProt Primary Accession #
O22775
UniProt Secondary Accession #
Q9SYY3; W8QNH8
UniProt Related Accession #
O22775
UniProt Comments
Xylosyltransferase specific to UDP-D-xylose that accepts both cellopentaose and cellohexaose as substrates, with a better use of cellohexaose, to produce xyloglucan. Adds preferentially the first xylosyl residue to the fourth glucosyl residue from the reducing end of both acceptors. Transfer one xylose mainly to the second glucose residue from the non-reducing end. The acceptor should have a minimum of four glucose residues (PubMed:16982611, PubMed:18544630). Associates with other xyloglucan-synthesizing enzymes to form multiprotein complexes for xyloglucan synthesis in the Golgi (PubMed:25392066).