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Literature summary for 2.4.1.46 extracted from

  • Aronsson, H.
    The galactolipid monogalactosyldiacylglycerol (MGDG) contributes to photosynthesis-related processes in Arabidopsis thaliana (2008), Plant Signal. Behav., 3, 1093-1095.
    View publication on PubMedView publication on EuropePMC
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Protein Variants

Protein Variants Comment Organism
additional information construction of a mgd1-1 knockdown mutant, targeting of chloroplast proteins is not affected in mgd1-1 mutants, but in dark-grown mgd1-1 plants the photoactive to photoinactive protochlorophyllide ratio is increased, and photoprotective responses are induced. Mutant mgd1-1 cannot withstand high light intensities, apparently due to impairment of another photoprotective mechanism, steady-state capacity of the xanthophyll cycle is reduced in mgd1-1 mutants mediated by increased conductivity of the thylakoid membrane leading to a higher pH in the thylakoid interior, which impairs the pH-dependent activation of violaxanthin de-epoxidase and PsbS, phenotype, overview. Knockdown mgd1-1 mutant accumulates about 40% less galactolipid monogalactosyldiacylglycerol than wild type Arabidopsis thaliana

Localization

Localization Comment Organism GeneOntology No. Textmining
chloroplast envelope
-
 Arabidopsis thaliana 9941
-

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
-
 gene mgd1-1
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
 Arabidopsis thaliana
-

Synonyms

Synonyms Comment Organism
MGD1
-
 Arabidopsis thaliana
monogalactosyldiacylglycerol synthase 1
-
 Arabidopsis thaliana

Expression

Organism Comment Expression
Arabidopsis thaliana mgd1-1 knockdown does not affect targeting of chloroplast proteins, but increases the photoactive to photoinactive protochlorophyllide ratio, and photoprotective responses are induced. Mutant mgd1-1 cannot withstand high light intensities, apparently due to impairment of another photoprotective mechanism, the xanthophyll cycle, mediated by increased conductivity of the thylakoid membrane leading to a higher pH in the thylakoid interior, which impairs the pH-dependent activation of violaxanthin de-epoxidase and PsbS, phenotype, overview down

General Information

General Information Comment Organism
metabolism the galactolipid monogalactosyldiacylglycerol is the major lipid in plastids, and is mainly synthesized in inner plastid envelopes, where monogalactosyldiacylglycerol synthase 1, MGD1, catalyses the last step of its production Arabidopsis thaliana