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Proteins/UNIPROT:Q9UQ53
Glycosyltransferase that catalyzes the transfer of GlcNAc from UDP-GlcNAc to the GlcNAcbeta1-2Manalpha1-3 arm of the core structure of N-linked glycans through a beta1-4 linkage and participates in the production of tri- and tetra-antennary N-linked sugar chains. Prefers complex-type N-glycans over hybrid-types. Has lower affinities for donors or acceptors than MGAT4A, suggesting that, under physiological conditions, it is not the main contributor in N-glycan biosynthesis..
Function from UniProtKB (Q9UQ53), read 2026-09-23. CC BY 4.0.
Curated compounds routed: 0
256 statements
256 statements · 7 reference databases · Subject: MGAT4B · Sources: Bgee, Hetionet, Human-GEM, Reactome, Rhea, UniProt, WikiPathways
9 reactions
MAM02507g+CHEBI:16264MAM01868g+proton+UDP
Catalysed by MGAT4A or MGAT4B or MGAT4C
Reaction pageLeft to rightBalance undeterminableEC 2.4.1.145Golgi apparatus
Human-GEM MAR07327CC BY 4.0Reference data
MAM02507g+CHEBI:16264proton+MAM02512g+UDP
Catalysed by MGAT4A
5 names
Resolves to: MGAT4B
Reaction pageLeft to rightBalance undeterminableEC 2.4.1.145Golgi apparatus
Human-GEM MAR08693CC BY 4.0Reference data
N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP-N-acetyl-alpha-D-glucosamineN(4)-{beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->4)]-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP+hydron
Catalysed by MGAT4C or MGAT4A or MGAT4B
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:16057CC BY 4.0Reference data
an N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP-N-acetyl-alpha-D-glucosaminean N(4)-{beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->4)]-alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP+hydron
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:69615CC BY 4.0Reference data
an N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->6)]-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP-N-acetyl-alpha-D-glucosaminean N(4)-{beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->4)]-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->6)]-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP+hydron
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:69619CC BY 4.0Reference data
an N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-[alpha-L-Fuc-(1->6)]-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP-N-acetyl-alpha-D-glucosamineN(4)-{beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->4)]-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-[alpha-L-Fuc-(1->6)]-beta-D-GlcNAc}-asparaginyl-[protein]+UDP+hydron
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:69623CC BY 4.0Reference data
an N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP-N-acetyl-alpha-D-glucosaminean N(4)-{beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->4)]-alpha-D-Man-(1->3)-[beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein]+UDP+hydron
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:69627CC BY 4.0Reference data
N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->3)-{alpha-D-Man-(1->6)}-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-asparaginyl-[protein]+UDP-N-acetyl-alpha-D-glucosamineN(4)-{beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->4)]-alpha-D-Man-(1->3)-[alpha-D-Man-(1->3)-{alpha-D-Man-(1->6)}-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-asparaginyl-[protein]+UDP+hydron
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:69631CC BY 4.0Reference data
N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-asparaginyl-[protein]+UDP-N-acetyl-alpha-D-glucosamineN(4)-{beta-D-GlcNAc-(1->2)-[beta-D-GlcNAc-(1->4)]-alpha-D-Man-(1->3)-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-asparaginyl-[protein]+UDP+hydron
Reaction pageLeft to rightBalance undeterminable
Rhea RHEA:69635CC BY 4.0Reference data