Entry
Name
dolichyl-P-Man:Man5GlcNAc2-PP-dolichol alpha-1,3-mannosyltransferase;
Man5GlcNAc2-PP-Dol mannosyltransferase;
ALG3;
dolichyl-P-Man:Man(5)GlcNAc(2)-PP-dolichyl mannosyltransferase;
Not56-like protein;
Alg3 alpha-1,3-mannosyl transferase;
Dol-P-Man:Man5GlcNAc2-PP-Dol alpha-1,3-mannosyltransferase;
dolichyl beta-D-mannosyl phosphate:D-Man-alpha-(1->2)-D-Man-alpha-(1->2)-D-Man-alpha-(1->3)-[D-Man-alpha-(1->6)]-D-Man-beta-(1->4)-D-GlcNAc-beta-(1->4)-D-GlcNAc-diphosphodolichol alpha-1,3-mannosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
dolichyl beta-D-mannosyl-phosphate:alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-alpha-D-GlcNAc-diphosphodolichol 3-alpha-D-mannosyltransferase (configuration-inverting)
Reaction(IUBMB)
dolichyl beta-D-mannosyl phosphate + alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-alpha-D-GlcNAc-diphosphodolichol = alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->3)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-alpha-D-GlcNAc-diphosphodolichol + dolichyl phosphate [RN:
R06258 ]
Reaction(KEGG)
Substrate
dolichyl beta-D-mannosyl phosphate [CPD:
C03862 ];
alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-alpha-D-GlcNAc-diphosphodolichol
Product
alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->3)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-alpha-D-GlcNAc-diphosphodolichol;
dolichyl phosphate [CPD:
C00110 ]
Comment
The formation of N-glycosidic linkages of glycoproteins involves the ordered assembly of the common Glc3Man9GlcNAc2 core-oligosaccharide on the lipid carrier dolichyl diphosphate. Early mannosylation steps occur on the cytoplasmic side of the endoplasmic reticulum with GDP-Man as donor, the final reactions from Man5GlcNAc2-PP-dolichol to Man9Glc-NAc2-PP-dolichol on the lumenal side use dolichyl beta-D-mannosyl phosphate. The first step of this assembly pathway on the luminal side of the endoplasmic reticulum is catalysed by ALG3.
History
EC 2.4.1.258 created 1976 as EC 2.4.1.130, part transferred 2011 to EC 2.4.1.258, modified 2012
Pathway
ec00513 Various types of N-glycan biosynthesis
Orthology
K03845 alpha-1,3-mannosyltransferase
Genes
HMH : 116457098 116479898(ALG3)
BGAR : 122933737(ALG3) 122934427
SANH : 107660011 107692886
CAUA : 113045392 113075849 113114242
CGIB : 127934919 127951188
MASI : 127440434 127441914
XHE : 116716593 116716595 116716599
SSEN : 122760436 122778844 122780059
STRU : 115157451 115169348
OTW : 112226542(alg3) 112260872
OMY : 110508350(alg3) 110530733
ONE : 115102851(alg3) 115124626
SALP : 111957003 111979135
SNH : 120020124(alg3) 120056216
PSPA : 121323704 121326846
ARUT : 117417177(alg3) 117423052
DSI : Dsimw501_GD25022(Dsim_GD25022)
CFEL : 113375722 113377819
PPOI : 119098936 119106953
CEL : CELE_K09E4.2(algn-3)
SHX : MS3_00005373(ALG3_1)
CSAT : 104783359 104784524 104793766
TPRA : 123892689 123897907
LJA : Lj1g3v4899050.1(Lj1g3v4899050.1)
LANG : 109331564 109331577
MSYL : 126589764 126614327
TAES : 123060251 123076127
PVIR : 120672571 120705850
ZOF : 121967403 122036790 122047205
SMO : SELMODRAFT_96090(GT58A1)
NCS : NCAS_0E02510(NCAS0E02510)
NDI : NDAI_0E04080(NDAI0E04080)
TPF : TPHA_0K00760(TPHA0K00760)
TBL : TBLA_0D00510(TBLA0D00510)
TDL : TDEL_0C02670(TDEL0C02670)
KAF : KAFR_0L01850(KAFR0L01850)
KNG : KNAG_0B02260(KNAG0B02260)
CAL : CAALFM_C604340WA(CaO19.1092)
NTE : NEUTE1DRAFT78420(NEUTE1DRAFT_78420)
BFU : BCIN_12g04720(Bcalg3)
ANG : ANI_1_1172164(An18g02360)
PNO : SNOG_16505(SNOG_16504)
LBC : LACBIDRAFT_247511(ALG3)
ABP : AGABI1DRAFT118456(AGABI1DRAFT_118456)
ABV : AGABI2DRAFT200258(AGABI2DRAFT_200258)
SCM : SCHCO_02524870(SCHCODRAFT_02524870)
MLR : MELLADRAFT_47521 MELLADRAFT_91322
FCY : FRACYDRAFT_180557(ALG3)
EHX : EMIHUDRAFT_426313(ALG3-1) EMIHUDRAFT_521974(ALG3-2)
» show all
Taxonomy
Reference
Authors
Sharma CB, Knauer R, Lehle L
Title
Biosynthesis of lipid-linked oligosaccharides in yeast: the ALG3 gene encodes the Dol-P-Man:Man5GlcNAc2-PP-Dol mannosyltransferase.
Journal
Sequence
Reference
Authors
Cipollo JF, Trimble RB
Title
The accumulation of Man(6)GlcNAc(2)-PP-dolichol in the Saccharomyces cerevisiae Deltaalg9 mutant reveals a regulatory role for the Alg3p alpha1,3-Man middle-arm addition in downstream oligosaccharide-lipid and glycoprotein glycan processing.
Journal
Other DBs
ExPASy - ENZYME nomenclature database: 2.4.1.258