NCBI Accession #
NP_001030722.1
NCBI GenBank Nucleotide #
NM_001035645.2
NCBI Official Full Name
plant glycogenin-like starch initiation protein 1
NCBI Official Symbol
PGSIP1
NCBI Official Synonym Symbols
glucuronic acid substitution of xylan 1; GUX1; PGSIP1; plant glycogenin-like starch initiation protein 1
NCBI Protein Information
plant glycogenin-like starch initiation protein 1
NCBI Summary
Plants expressing an RNAi construct specifically targeting PGSIP1 was shown to have a dramatically reduced amount of starch.
UniProt Synonym Gene Names
PGSIP1; UDP-GlcA:xylan glucuronyltransferase 1; AtGUX1
UniProt Protein Name
UDP-glucuronate:xylan alpha-glucuronosyltransferase 1
UniProt Synonym Protein Names
Glycogenin-like protein 1; Plant glycogenin-like starch initiation protein 1; Protein GLUCURONIC ACID SUBSTITUTION OF XYLAN 1; AtGUX1
UniProt Entry Name
GUX1_ARATH
UniProt Primary Accession #
Q9LSB1
UniProt Secondary Accession #
Q940B5
UniProt Related Accession #
Q9LSB1
UniProt Comments
Glycosyltransferase required for the addition of both glucuronic acid and 4-O-methylglucuronic acid branches to xylan in stem cell walls. In association with GUX2, is responsible for almost all of the substitutions of the xylan backbone in stem glucuronoxylan.