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{{Infobox enzyme
| Name = Undecaprenyl-diphosphooligosaccharide-protein glycotransferase
| EC_number = 2.4.99.19
| CAS_number = 
| IUBMB_EC_number = 2/4/99/19
| GO_code = 
| image = 
| width = 
| caption =
}}
'''Undecaprenyl-diphosphooligosaccharide-protein glycotransferase''' ({{EC number|2.4.99.19}}, ''PglB'') is an [[enzyme]] with system name ''tritrans,heptacis-undecaprenyl-diphosphooligosaccharide:protein-L-asparagine N-beta-D-oligosaccharidotransferase''.<ref>{{cite journal | title = Comparative structural biology of eubacterial and archaeal oligosaccharyltransferases |author = Maita, N., Nyirenda, J., Igura, M., Kamishikiryo, J. and Kohda, D. |journal = J. Biol. Chem. |date = 2010 |volume = 285 |pages = 4941-4950 |pmid = 20007322 |doi=10.1074/jbc.M109.081752 |issue=7}}</ref><ref>{{cite journal | title = X-ray structure of a bacterial oligosaccharyltransferase |author = Lizak, C., Gerber, S., Numao, S., Aebi, M. and Locher, K.P. |journal = Nature |date = 2011 |volume = 474 |pages = 350-355 |pmid = 21677752 |doi=10.1038/nature10151}}</ref> This enzyme [[catalysis|catalyses]] the following [[chemical reaction]]

: tritrans,heptacis-undecaprenyl diphosphooligosaccharide + [protein]-L-asparagine <math>\rightleftharpoons</math> tritrans,heptacis-undecaprenyl diphosphate + a glycoprotein with the oligosaccharide chain attached by N-beta-D-glycosyl linkage to protein L-[[asparagine]]

This is a bacterial enzyme that is isolated from ''[[Campylobacter jejuni]]'' and ''[[Campylobacter lari]]''.

== References ==
{{reflist}}

== External links ==
* {{MeshName|Undecaprenyl-diphosphooligosaccharide-protein+glycotransferase}}

[[Category:EC 2.4.99]]