PNGase F PRIME Glycosidase
More Glycan Groups
Specifically remove oligosaccharides from proteins
PNGase F PRIME is a mutant recombinant PNGase F cloned from Flavobacterium meningosepticum and expressed and purified from E. coli. The proprietary changes made to PNGase F have been shown to have unique characteristics when compared to other commercially-available sources of PNGase F. Data generated by independent labs shows that PRIME works on native glycoproteins and serum glycoproteins in minutes at room temperature. Glycan analysis of the digestion products shows that PNGase F PRIME digestion led to more complete glycan release and also allowed for the cleavage of glycans not released by the commercially-available enzymes when used at the same concentrations with the same digestion conditions. This advancement benefits applications that seek to understand glycobiology in a natural milieu. Preliminary data indicates that PNGase F PRIME has a higher specificity towards complex (tri and tetra-antennary) sialylated structures compared to the commercially sourced enzyme. Additionally, the work presented in this Analytical Chemistry paper utilized PNGase F PRIME for all in situ tissue work as the commercially-available PNGase enzymes did not work on native tissue to allow glycan recognition.
MALDI-IMS Analysis of a Mouse Brain Slice
The three starred oligosaccharide groups in the mass spec trace to the right are color coded and overlayed on a mouse brain section. The distribution shows a distinct localization pattern.
Peak-a-boo we see you
Analysis by mass spectrometry is when PRIME truly shines. Traditional PNGase provides fewer and blunted peaks as compared with PRIME. In nearly every side-by-side study to date, PNGase F PRIME produces favorable results. For example, native Avastin® (IgG1 based therapeutic for cancers) treated with PRIME releases 11 different oligosaccharides structures (only a subset of data shown below).
In another example, when compared with a very popular PNGase F, PRIME produced 33% more peaks, sharper peaks and with much lower background when cleaving the native form of the blood borne glycoprotein fetuin.
The same treatments show marked differences even by HPLC analysis. PNGase F PRIME (in blue) shows more pronounced peaks than the same competing PNGase F (in black). Also note the additional peaks in both the neutral and sialylated regions, particularly the trisialo region.
This type of richer data presents the opportunity to develop a deeper, more complete, understanding of glycobiology.
|Target||Asparagine-linked (N-linked) oligosaccharides (mannose, hybrid, and complex)|
|Compatible Glycoprotein||Native and denatured|
|Source of PNGase F Prime||Recombinant, E. coli|
|Total Protocol Length||30 minutes to 24 hours|
|Typical Yield||1 unit will catalyze the deglycosolation of 1 nanomole of detantured Ribonuclease B (RNase B) in 30 minutes at 37°C. 1U = 1 IUB milliunit.|
|Purity||≥95% as determined by SDS PAGE|
|Compatible with Mass Spec||Yes|
|Affinity tag for purifcation||Yes. PNGase F Prime contains a His-tag.|
|Reaction Conditions||In vitro and in situ|
|Storage||-20°C or 4°C (avoid multiple freeze-thaws)|
|Shelf Life||1 year|
|Microbe Free||Yes, lot tested|
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