NCBI Accession #
NP_182056.1
NCBI GenBank Nucleotide #
NM_130094.2
NCBI Official Full Name
UDP-D-glucuronate 4-epimerase 4
NCBI Official Symbol
GAE4
NCBI Official Synonym Symbols
F4L23.18; GAE4; UDP-D-glucuronate 4-epimerase 4
NCBI Protein Information
UDP-D-glucuronate 4-epimerase 4
NCBI Summary
UDP-D-glucuronate 4-epimerase
UniProt Synonym Gene Names
UGlcAE1; AtUGlcAE1
UniProt Protein Name
UDP-glucuronate 4-epimerase 4
UniProt Synonym Protein Names
UDP-glucuronic acid epimerase 4
UniProt Entry Name
GAE4_ARATH
UniProt Primary Accession #
O22141
UniProt Related Accession #
A84889
UniProt Comments
Function: Involved in the synthesis of the negatively charged monosaccharide that forms the backbone of pectic cell wall components.Catalytic activity: UDP-glucuronate = UDP-D-galacturonate.Enzyme regulation: Activated by glycerol, not effected by dimethyl sulfoxide and inhibited by high concentration of monovalent salts, UDP-xylose, UDP-arabinose or UDP.Subunit structure: Homodimer Probable.Subcellular location: Golgi apparatus › Golgi stack membrane; Multi-pass membrane protein Potential. Tissue specificity: In roots, leaves, siliques, flowers, pollen and stems.Sequence similarities: Belongs to the sugar epimerase family.Biophysicochemical propertiesKinetic parameters:Equilibrium between UDP-glucuronate and UDP-D-galacturonate established at 1:1.9. No activity with UDP-Galactose, UDP-Glucose, UDP-arabinose, UDP-Xylose, CDP-glucose or GDP-manose.KM=0.72 mM for UDP-glucuronatepH dependence:Optimum pH is 7.5. Active from pH 6.8 to 8.2.Temperature dependence:Active between 20 and 55 degrees Celsius.