GlycosylTransferase Family 66

Activities in FamilyDolichyldiphosphooligosaccharide-protein oligosaccharyltransferase (EC 2.4.1.119);
Dolichyl-diphosphooligosaccharide—protein glycotransferase (EC 2.4.99.18);
Undecaprenyl-diphosphooligosaccharide--protein glycotransferase (EC 2.4.99.19);
Mechanism Inverting
3D Structure StatusGT-C
NoteThese enzymes utilize a lipid-diphospho-oligosaccharide as the donor
External resourcesGlymap;
Statistics GenBank accession (2665); Uniprot accession (28); PDB accession (47); 3D entries (12); cryst (0)
Archaea
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3D
 oligosaccharyltransferase (AglB-S1;AfAglB-S1;AF0329;AF_0329) 2.4.99.18   Archaeoglobus fulgidus DSM 4304 AAB90907.1
NP_069165.1
O29918 3VGP[A]
 oligosaccharyltransferase (AglB-L;AfAglB-L;AF_0380) 2.4.99.18   Archaeoglobus fulgidus DSM 4304 AAB90856.1 O29867 3WAI[A]
3WAJ[A]
3WAK[A]
5GMY[A]
7E9S[A]
 oligosaccharyltransferase (AglB;Stt3) 2.4.99.18   Haloferax volcanii WR536 (H53) CAP58184.1 A9JPF0
D4GYH4
 
 oligosaccharyltransferase (AglB;Stt3;Mv1749;MVO1749) 2.4.99.18   Methanococcus voltae PS ABD17750.1 Q2EMT4  
 oligosaccharyltransferase (AglB;Stt3;PF0156) 2.4.99.18 pubmed
Pyrococcus furiosus DSM 3638 AAL80280.1
NP_577885.1
I6V0B8
Q8U4D2
2ZAG[A,B,C,D]
2ZAI[A,B,C,D]
5AZA[A]
 oligosaccharyltransferase (AglB-L;PhAglB-L;PH0242) 2.4.1.119 pubmed
Pyrococcus horikoshii OT3 BAA29314.1
NP_142238.1
O74088 3VU1[A,B]
Bacteria
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3D
 Undecaprenyl-diphosphooligosaccharide--protein glycotransferase (PglB;WlaF) 2.4.99.19   Campylobacter jejuni subsp. jejuni 81-176 AAK97438.1
AAD51383.1
EAQ72203.1
A0A0H3P9U9
A1W0B2
Q93DP5
Q9S4V7
 
 Undecaprenyl-diphosphooligosaccharide--protein glycotransferase (PglB;WlaF;Cj1126c) 2.4.99.19   Campylobacter jejuni subsp. jejuni NCTC 11168 = ATCC 700819 CAB73381.1
AAD09293.1
CAL35243.1
NP_282274.1
Q0P9C8
Q9ZAC7
 
 Undecaprenyl-diphosphooligosaccharide--protein glycotransferase (PglB;Cla_1253) 2.4.99.19   Campylobacter lari RM2100 ACM64573.1 B9KDD4 3RCE[A]
5OGL[A]
6GXC[A]
 oligosaccharyltransferase (PglB1) 2.4.99.19   Helicobacter pullorum NCTC 12824 ADM36003.1 E1B265  
Eukaryota
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3D
 dolichyl-diphosphooligosaccharide: protein glycotransferase / oligosaccharyltransferase subunit STT3 (OST-A; Stt3A; B5; ITM1) 2.4.99.18 pubmed
Homo sapiens NP_689926.1
AAB05994.1
AAH20965.1
AAH48348.1
AAH48348.2
AAL77539.1
AAP35764.1
ACM84938.1
BAF82729.1
BAG58686.1
CAH05569.1
CAH05570.1
CAH05571.1
CAH05572.1
P46977
Q86XU9
Q8TE35
6S7O[A]
8B6L[I]
8PN9[A]
 dolichyl-diphosphooligosaccharide: protein glycotransferase / oligosaccharyltransferase subunit STT3B (SIMP; OST-B) 2.4.99.18 pubmed
Homo sapiens AAL71884.1
AAH15880.1
ABA83583.1
ABA84110.1
BAB55370.1
BAC11076.1
BAC11581.1
CAC39710.1
CAE48447.1
CAE91783.1
CAF00240.1
CAF85831.1
CAI72081.1
NP_849193.1
Q8TCJ2 6S7T[A]
 oligosaccharyltransferase STT3 subunit (YGL022w;Stt3;RHK2) 2.4.99.18 pubmed
Saccharomyces cerevisiae S288c BAA06079.1
ABC17138.1
CAA96722.1
NP_011493.1
P39007 2LGZ[A]
6C26[A]
6EZN[F]
7OCI[F]
8AGB[A]
8AGC[A]
8AGE[A]
 oligosaccharyltransferase (Stt3;SPBC1271.02) 2.4.99.18   Schizosaccharomyces pombe 972h- CAA22192.1
BAA76479.1
CAK8728358.1
NP_595148.1
O94335
O94335
 
 oligosaccharyltransferase (Stt3) 2.4.99.18   Toxoplasma gondii RH TACHYZOITES CAB38944.1 O97353  
 oligosaccharyltransferase (Stt3C;Tb927.5.910) 2.4.99.18   Trypanosoma brucei brucei TREU927 AAX70183.1
AAX70186.1
Q57W33
Q57W36
 
 oligosaccharyltransferase (Stt3B;Tb927.5.900) 2.4.99.18   Trypanosoma brucei brucei TREU927 AAX70184.1 Q57W35  
 oligosaccharyltransferase (Stt3A;Tb927.5.890) 2.4.99.18   Trypanosoma brucei brucei TREU927 AAX70185.1 Q57W34  
 oligosaccharyltransferase (Stt3;Tc00.1047053505163.80) 2.4.99.18   Trypanosoma cruzi CL BRENER EAN86688.1 Q4D2C9  
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