N-hydroxythioamide S-beta-glucosyltransferase (EC 2.4.1.195) is an enzyme that catalyzes several chemical reactions that are part of the biosynthesis of plant glucosinolates.[1][2] For example, 4-methylthiobutylthiohydroximate is converted to 3-methylthiopropyl-desulfoglucosinolate by transfer of a glucose unit from UDP-glucose, giving uridine diphosphate (UDP) as a byproduct:
| thiohydroximate beta-D-glucosyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.4.1.195 | ||||||||
| CAS no. | 9068-14-8 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
The enzyme has been characterised from Brassica napus and Arabidopsis.[3][4] It belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-glucose:N-hydroxy-2-phenylethanethioamide S-beta-D-glucosyltransferase. Other names in common use include desulfoglucosinolate-uridine diphosphate glucosyltransferase, uridine diphosphoglucose-thiohydroximate glucosyltransferase, thiohydroximate beta-D-glucosyltransferase, UDPG:thiohydroximate glucosyltransferase, thiohydroximate S-glucosyltransferase, thiohydroximate glucosyltransferase, and UDP-glucose:thiohydroximate S-beta-D-glucosyltransferase.[5]
References
edit- ↑ Jain JC, Reed DW, GrootWassink JW, Underhill EW (1989). "A radioassay of enzymes catalyzing the glucosylation and sulfation steps of glucosinolate biosynthesis in Brassica species". Anal. Biochem. 178 (1): 137–40. doi:10.1016/0003-2697(89)90369-2. PMID 2524977.
- ↑ Fahey JW, Zalcmann AT, Talalay P (2001). "The chemical diversity and distribution of glucosinolates and isothiocyanates among plants". Phytochemistry. 56 (1): 5–51. Bibcode:2001PChem..56....5F. doi:10.1016/S0031-9422(00)00316-2. PMID 11198818.
- ↑ Reed DW, Davin L, Jain JC, Deluca V, Nelson L, Underhill EW (1993). "Purification and properties of UDP-glucose:thiohydroximate glucosyltransferase from Brassica napus L. seedlings". Arch. Biochem. Biophys. 305 (2): 526–32. doi:10.1006/abbi.1993.1456. PMID 8373190.
- ↑ TF; Abel S (2004). "Arabidopsis glucosyltransferase UGT74B1 functions in glucosinolate biosynthesis and auxin homeostasis". Plant J. 40 (6): 893–908. CiteSeerX 10.1.1.538.667. doi:10.1111/j.1365-313X.2004.02261.x. PMID 15584955.
- ↑ Enzyme 2.4.1.195 at KEGG Pathway Database.
