UniProt functional annotation for Q8W1S1



	UniProt functional annotation for Q8W1S1

UniProt code: Q8W1S1.

Organism: Arabidopsis thaliana (Mouse-ear cress).

Taxonomy: Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.

Function: Involved in the synthesis of diacylglycerol galactolipids that are specifically found in thylakoid membranes. Specific for alpha- glycosidic linkages (PubMed:11696551, PubMed:14600212). During phosphate shortage, involved in the biosynthesis of digalactosyldiacylglycerol (DGDG) which rescues the limitation of phospholipids (Probable). {ECO:0000269|PubMed:11696551, ECO:0000269|PubMed:14600212, ECO:0000305|PubMed:21506606}.

Catalytic activity: Reaction=a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol + UDP-alpha- D-galactose = 1,2-diacyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D- galactosyl]-sn-glycerol + H(+) + UDP; Xref=Rhea:RHEA:10520, ChEBI:CHEBI:15378, ChEBI:CHEBI:17615, ChEBI:CHEBI:28396, ChEBI:CHEBI:58223, ChEBI:CHEBI:66914; EC=2.4.1.241; Evidence={ECO:0000269|PubMed:21156807};

Activity regulation: Stimulated by anionic phospholipids. {ECO:0000269|PubMed:21156807}.

Subcellular location: Plastid, chloroplast outer membrane {ECO:0000269|PubMed:14600212}.

Tissue specificity: Expressed in leaves, flowers and roots, but not in stems and siliques. {ECO:0000269|PubMed:14600212}.

Induction: 30-fold up-regulation by phosphate deficiency. {ECO:0000269|PubMed:11696551, ECO:0000269|PubMed:14600212}.

Disruption phenotype: No visible phenotype under normal growth conditions. {ECO:0000269|PubMed:14600212}.

Similarity: Belongs to the glycosyltransferase group 1 family. Glycosyltransferase 4 subfamily. {ECO:0000305}.

Sequence caution: Sequence=AAC13625.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305}; Sequence=BAD94208.1; Type=Erroneous initiation; Evidence={ECO:0000305}; Sequence=CAB80864.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};

Annotations taken from UniProtKB at the EBI.


Organism:		Arabidopsis thaliana (Mouse-ear cress).
Taxonomy:		Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.



Function:		Involved in the synthesis of diacylglycerol galactolipids that are specifically found in thylakoid membranes. Specific for alpha- glycosidic linkages (PubMed:11696551, PubMed:14600212). During phosphate shortage, involved in the biosynthesis of digalactosyldiacylglycerol (DGDG) which rescues the limitation of phospholipids (Probable). {ECO:0000269\|PubMed:11696551, ECO:0000269\|PubMed:14600212, ECO:0000305\|PubMed:21506606}.


Catalytic activity:		Reaction=a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol + UDP-alpha- D-galactose = 1,2-diacyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D- galactosyl]-sn-glycerol + H(+) + UDP; Xref=Rhea:RHEA:10520, ChEBI:CHEBI:15378, ChEBI:CHEBI:17615, ChEBI:CHEBI:28396, ChEBI:CHEBI:58223, ChEBI:CHEBI:66914; EC=2.4.1.241; Evidence={ECO:0000269\|PubMed:21156807};
Activity regulation:		Stimulated by anionic phospholipids. {ECO:0000269\|PubMed:21156807}.
Subcellular location:		Plastid, chloroplast outer membrane {ECO:0000269\|PubMed:14600212}.
Tissue specificity:		Expressed in leaves, flowers and roots, but not in stems and siliques. {ECO:0000269\|PubMed:14600212}.
Induction:		30-fold up-regulation by phosphate deficiency. {ECO:0000269\|PubMed:11696551, ECO:0000269\|PubMed:14600212}.
Disruption phenotype:		No visible phenotype under normal growth conditions. {ECO:0000269\|PubMed:14600212}.
Similarity:		Belongs to the glycosyltransferase group 1 family. Glycosyltransferase 4 subfamily. {ECO:0000305}.
Sequence caution:		Sequence=AAC13625.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305}; Sequence=BAD94208.1; Type=Erroneous initiation; Evidence={ECO:0000305}; Sequence=CAB80864.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};