CATH Classification

Domain Context

CATH Clusters

Superfamily 3.40.50.12610
Functional Family

Enzyme Information

2.4.99.21
Dolichyl-phosphooligosaccharide-protein glycotransferase.
based on mapping to UniProt O30195
An archaeal dolichyl phosphooligosaccharide + [protein]-L-asparagine = an archaeal dolichyl phosphate + a glycoprotein with the oligosaccharide chain attached by N-beta-D-glycosyl linkage to a protein L-asparagine.
-!- The enzyme, characterized from the archaea Methanococcus voltae and Haloferax volcanii, transfers a glycan component from dolichyl phosphooligosaccharide to external proteins. -!- It is different from EC 2.4.99.18 which uses dolichyl diphosphate as carrier compound in bacteria and eukaryotes. -!- The enzyme participates in the N-glycosylation of proteins in some archaea. -!- Dolichol used by archaea is different from that used by eukaryotes; it is much shorter (C(55)-C(60)), it is alpha,omega-saturated and it may have additional unsaturated positions in the chain.

UniProtKB Entries (1)

O30195
AGLB2_ARCFU
Archaeoglobus fulgidus DSM 4304
Dolichyl-phosphooligosaccharide-protein glycotransferase 2

PDB Structure

PDB 3VU0
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Crystallographic and NMR Evidence for Flexibility in Oligosaccharyltransferases and Its Catalytic Significance
Nyirenda, J., Matsumoto, S., Saitoh, T., Maita, N., Noda, N.N., Inagaki, F., Kohda, D.
Structure