S2076
α-2,6-Sialyltransferase from Photobacterium damsela
recombinant, expressed in E. coli BL21, ≥5 units/mg protein
Synonym(s):
β-Galactoside α-2,6-sialyltransferase, CMP-N-Acetylneuraminate:β-D-galactosyl-1,4-N-acetyl-β-D-glucosamine α-2,6-N-acetylneuraminyltransferase
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About This Item
Specific activity:
≥5 units/mg protein
Recombinant:
expressed in E. coli BL21
recombinant
expressed in E. coli BL21
Quality Segment
form
lyophilized powder
specific activity
≥5 units/mg protein
mol wt
56.8 kDa
shipped in
dry ice
storage temp.
−20°C
General description
Human ST6Gal-I (β-galactoside α-2,6-sialyltransferase 1) is a member of the CAZy family GT29.
Application
α-2,6-Sialyltransferase from Photobacterium damsela has been used in resialylation and restoration of sialic acids (SAs) in HRT-18G cells.
Highly active α2-6 sialyltransferase has been used to prepare high levels of disialylated fragment crystals.
Biochem/physiol Actions
The terminal step of complex N-glycan biosynthesis is catalysed by α-2,6-sialyltransferase (STs). Bacterial α(2,6)-STs possesses broader acceptor substrate specificity when compared to eukaryotic α(2,6)-STs.
Sialyltransferase transfers Neu5Ac from CMP-Neu5Ac to the galactosyl terminus of acceptor molecules including glycoproteins, glycolipids, and oligosaccharides.
Physical form
Supplied as a lyophilized powder containing Tris-HCl and NaCl.
Analysis Note
Enzymatic activity assays are performed in Tris-HCl buffer (100 mM, pH 8.0) containing CMP-Neu-5-Ac (1 mM) and Lac-β−OMU (1 mM) at 37 °C for 30 min and analyzed using HPLC with a fluorescence detector (excitation at 325 nm and emission at 372 nm).
Other Notes
One unit will catalyze the formation of 1 μmol Neu-5-Ac-α-2,6-LacMU from CMP-Neu-5-Ac and Lac-β−OMU per minute at 37 °C at pH 8.0.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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