PNGase F, peptide-N-glycosidase F, peptide-N4-(N-acetyl-β-glucosaminyl)asparagine amidase. Releases intact N-glycans by cleaving between the innermost GlcNAc and Asn. The same formulation provided in GlykoPrep™, ≥ 10 U/ml and EDTA-free.
Recombinant gene from Elizabethkingia meningosepticum, expressed in E. coli. The source organism was previously known as Chryseobacterium [Flavobacterium] meningosepticum .
Cleaves all N-linked complex, hybrid or high mannose oligosaccharides, unless α(1-3) core fucosylated, as in plant glycans. Asparagine must be peptide-bonded at both termini. Phosphate, sulfate and sialic acid groups attached to the oligosaccharide do not affect cleavage. Endo F free. Highly concentrated, particularly useful for deglycosylation under native conditions.
Figure 1: Cleavage specificity for GKE-5020 N-Glycanase (PNGase F).
R1: N & C substitution other than H
R2: may be H or the rest of an oligosaccharide
R3: may be H or α(1-6)-linked fucose
To obtain efficient deglycosylation of glycoprotein substrates under non-denaturing conditions, it is necessary to use a higher starting concentration of enzyme. N-Glycanase® PLUS and ULTRA (EDTA-Free) are supplied at ≥ 10 U/ml, and are recommended for all applications requiring deglycosylation of glycoproteins in the absence of denaturants. The high activity also allows smaller reaction volumes and shorter reaction times to be explored.
"B" pack size ships with:
20 mM Tris HCl pH 7.5, 50 mM NaCl
7.5 - 9.5
One unit is defined as the amount of enzyme required to catalyze the release of N-linked oligosaccharides from 1 μmole of denatured ribonuclease B per minute at 37°C, pH 7.5.
Size: 400 mU in 40 µl
Concentration: ≥ 10 U/ml
Product Code: GKE-5020B
Not formulated for FACE® Analysis, use GK50052.
1. Kim KK, Kim MK, Lim JH, Park HY, Lee ST. Transfer of Chryseobacterium meningosepticum and Chryseobacterium miricola to Elizabethkingia gen. nov. as Elizabethkingia meningoseptica comb. nov. and Elizabethkingia miricola comb. nov. Int J Syst Evol Microbiol. 2005 May;55(Pt 3):1287-93.
Product Safety Documentation for GKE-5020B:
|WS0010||5x N-Glycanase Reaction Buffer|