ALG6 - Dolichyl pyrophosphate Man9GlcNAc2 alpha-1,3-glucosyltransferase - human protein (Function)
 
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References

 
ALG6 »  Dolichyl pyrophosphate Man9GlcNAc2 alpha-1,3-glucosyltransferase   [ EC 2.4.1.267 ]
 
Protein also known as:  Dol-P-Glc:Man(9)GlcNAc(2)-PP-Dol alpha-1,3-glucosyltransferase.
Gene name:  ALG6
Entry whose protein(s) existence is based on evidence at protein level
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GENE REF ISO

Function

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Overview 
Adds the first glucose residue to the lipid-linked oligosaccharide precursor for N-linked glycosylation. Transfers glucose from dolichyl phosphate glucose (Dol-P-Glc) onto the lipid-linked oligosaccharide Man(9)GlcNAc(2)-PP-Dol.  
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  • UniProtKB
GO molecular function 
Dolichyl pyrophosphate Man9GlcNAc2 alpha-1,3-glucosyltransferase activitydefinition[GO:0042281]  
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  • RefGenome
Glucosyltransferase activitydefinition[GO:0046527]  
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  • MGI
GO biological process 
Oligosaccharide-lipid intermediate biosynthetic processdefinition[GO:0006490]  
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  • RefGenome
Protein N-linked glycosylationdefinition[GO:0006487]  
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  • UniProtKB
  • MGI
Enzymatic activity 
This protein acts as an enzyme. It is known to catalyze the following reaction
EC 2.4.1.267: Dolichyl beta-D-glucosyl phosphate + D-Man-alpha-(1->2)-D-Man-alpha-(1->2)-D-Man-alpha-(1->3)-[D-Man-alpha-(1->2)-D-Man-alpha-(1->3)-(D-Man-alpha-(1->2)-D-Man-alpha-(1->6))-D-Man-alpha-(1->6)]-D-Man-beta-(1->4)-D-GlcNAc-beta-(1->4)-D-GlcNAc-diphosphodolichol D-Glc-alpha-(1->3)-D-Man-alpha-(1->2)-D-Man-alpha-(1->2)-D-Man-alpha-(1->3)-[D-Man-alpha-(1->2)-D-Man-alpha-(1->3)-(D-Man-alpha-(1->2)-D-Man-alpha-(1->6))-D-Man-alpha-(1->6)]-D-Man-beta-(1->4)-D-GlcNAc-beta-(1->4)-D-GlcNAc-diphosphodolichol + dolichyl phosphate.  
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  • UniProtKB
According to CAZy, this protein is belongs to the following pathway:
Glycosyltransferase Family 57  GT57  
 
More information is available from:
Pathways 
This protein is involved in the following pathway
Protein modification; protein glycosylation  
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  • UniProtKB
According to KEGG, this protein belongs to the following pathways:
Metabolic pathways  hsa01100+29929  
N-Glycan biosynthesis  hsa00510+29929  
According to Reactome, this protein belongs to the following pathways:
Biosynthesis of the N-glycan precursor (dolichol lipid-linked oligosaccharide, LLO) and transfer to a nascent protein  REACT_22433  
Defective ALG6 causes ALG6-CDG (CDG-1c)  REACT_267765  
 

Keywords

Molecular function 
Glycosyltransferase  definition   [KW-0328]
Transferase  definition   [KW-0808]
Technical term 
Reference proteome  definition   [KW-1185]
 

Further external links

GeneWiki: ALG6
GenomeRNAi: 29929
PRO: PR:Q9Y672