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Literature summary for 6.6.1.1 extracted from

  • Shang, Y.; Yan, L.; Liu, Z.Q.; Cao, Z.; Mei, C.; Xin, Q.; Wu, F.Q.; Wang, X.F.; Du, S.Y.; Jiang, T.; Zhang, X.F.; Zhao, R.; Sun, H.L.; Liu, R.; Yu, Y.T.; Zhang, D.P.
    The Mg-chelatase H subunit of Arabidopsis antagonizes a group of WRKY transcription repressors to relieve ABA-responsive genes of inhibition (2010), Plant Cell, 22, 1909-1935.
    View publication on PubMedView publication on EuropePMC
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Localization

Localization Comment Organism GeneOntology No. Textmining
chloroplast ABAR spans the chloroplast envelope with its N- and C-termini exposed to cytosol Arabidopsis thaliana 9507
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Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Arabidopsis thaliana

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
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 ecotype Col-0
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Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
 Arabidopsis thaliana
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + protoporphyrin IX + Mg2+ + H2O
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 Arabidopsis thaliana ADP + phosphate + Mg-protoporphyrin IX + H+
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 ?
additional information ABAR interacts with the transcription factors WRKY40, WRKY18, and WRKY60 Arabidopsis thaliana ?
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 ?

Synonyms

Synonyms Comment Organism
ABAR
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 Arabidopsis thaliana
ChlH
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 Arabidopsis thaliana
magnesium-protoporphyrin IX chelatase
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 Arabidopsis thaliana
Mg-chelatase H subunit Arabidopsis thaliana

General Information

General Information Comment Organism
physiological function the magnesium-protoporphyrin IX chelatase H subunit (CHLH/ABAR) functions as a receptor for abscisic acid in Arabidopsis thaliana. ABAR is a key component connecting the circadian clock with abscisic acid-mediated plant responses to drought. ABAR antagonizes negative abscisic acid signaling regulators WRKYs to derepress abscisic acid-responsive genes Arabidopsis thaliana