The Enzyme Database

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EC 2.4.1.375     
Accepted name: rhamnogalacturonan I galactosyltransferase
Reaction: Transfer of a β-galactosyl residue in a β-(1→4) linkage from UDP-α-D-galactose to rhamnosyl residues within the rhamnogalacturonan I backbone.
Glossary: rhamnogalacturonan I backbone = [(1→2)-α-L-rhamnosyl-(1→4)-α-D-galacturonosyl]n
Systematic name: UDP-α-D-galactose:[rhamnogalacturonan I]-α-L-rhamnosyl β-1,4-galactosyltransferase (configuration-inverting)
Comments: The enzyme, characterized from the plant Vigna angularis (azuki beans), participates in the biosynthesis of rhamnogalacturonan I, one of the components of pectin in plant cell wall. It does not require any metal ions, and prefers substrates with a degree of polymerization larger than 9.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Matsumoto, N., Takenaka, Y., Wachananawat, B., Kajiura, H., Imai, T. and Ishimizu, T. Rhamnogalacturonan I galactosyltransferase: Detection of enzyme activity and its hyperactivation. Plant Physiol. Biochem. 142 (2019) 173–178. [DOI] [PMID: 31299599]
[EC 2.4.1.375 created 2020]
 
 


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