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GO:0000026

View this GO term in other databases

Overview

Field Value
Namespace Molecular function
Short description Alpha-1,2-mannosyltransferase activity
Full defintion Catalysis of the transfer of a mannose residue to an oligosaccharide, forming an alpha-(1->2) linkage.
Subterm of

Relationships

The relationship of GO:0000026 with other GO terms.

Relationship type GO terms
Is a
Regulates n.a.
Part of n.a.
Positively regulates n.a.
Negatively regulates n.a.

Ancestor tree

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Additional data

This table contains additional metadata associated with the GO entry's definition field.

Field Value
GOCmcc
PMID
Mnt2p and Mnt3p of Saccharomyces cerevisiae are members of the Mnn1p family of alpha-1,3-mannosyltransferases responsible for adding the terminal mannose residues of O-linked oligosaccharides.Romero PA, Lussier M, Véronneau S, Sdicu AM, Herscovics A, Bussey H
Glycobiology. 1999 Oct; 9 (10): 1045–51.PMID: 10521541

The genome of Saccharomyces cerevisiae contains five genes that encode type II transmembrane proteins with significant amino acid similarity to the alpha-1,3-mannosyltransferase Mnn1p. The roles of the three genes most closely related to MNN1 were examined in mutants carrying single and multiple combinations of the disrupted genes. Paper chromatographic analysis of [2-3H]mannose-labeled O-linked oligosaccharides released by beta-elimination showed that the MNT2 (YGL257c) and MNT3 (YIL014w) genes in combination with MNN1 have overlapping roles in the addition of the fourth and fifth alpha-1,3-linked mannose residues to form Man4 and Man5 oligosaccharides whereas MNT4 (YNR059w) does not appear to be required for O-glycan synthesis.

Associated Lotus transcripts

GO predictions are based solely on the InterPro-to-GO mappings published by EMBL-EBI, which are in turn based on the mapping of predicted domains to the InterPro dataset. The InterPro-to-GO mapping was last updated on , while the GO metadata was last updated on .

No transcripts are associated with this gene ontology identifier.