Inositol 3-alpha-galactosyltransferase

Inositol 3-alpha-galactosyltransferase
Identifiers
EC no.2.4.1.123
CAS no.79955-89-8
Databases
BRENDAenzyme data
ExPASyNiceZyme view
KEGGenzyme entry
MetaCycmetabolic pathway
Rheareactions
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
Search
PMCarticles
PubMedarticles
NCBIproteins

Inositol 3-alpha-galactosyltransferase (EC 2.4.1.123) is an enzyme that catalyzes the chemical reaction

2D representation of the chemical structure of inositol .
inositol
+ UDP-galactose
 
 
 
Rightward reaction arrow with minor product(s) to top right
 
 
 
2D representation of the chemical structure of Q27102430.
galactinol

The two substrates of this enzyme characterised from cucumber are inositol (myo-inositol) and UDP-galactose. Its products are galactinol and uridine diphosphate (UDP).[1]

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-galactose:myo-inositol 3-alpha-D-galactosyltransferase. Other names in common use include UDP-D-galactose:inositol galactosyltransferase, UDP-galactose:myo-inositol 1-alpha-D-galactosyltransferase, UDPgalactose:myo-inositol 1-alpha-D-galactosyltransferase, galactinol synthase, inositol 1-alpha-galactosyltransferase, and uridine diphosphogalactose-inositol galactosyltransferase. This enzyme participates in galactose metabolism.[2]

References

  1. ↑ Pharr DM, Sox, HN, Locy RD, Huber SC (1981). "Partial characterization of the galactinol forming enzyme from leaves of Cucumis sativus L". Plant Sci. Lett. 23: 25–33. doi:10.1016/0304-4211(81)90021-3.
  2. ↑ Enzyme 2.4.1.123 at KEGG Pathway Database.


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