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Literature summary for 6.6.1.1 extracted from

  • Adhikari, N.D.; Orler, R.; Chory, J.; Froehlich, J.E.; Larkin, R.M.
    Porphyrins promote the association of GENOMES UNCOUPLED 4 and a Mg-chelatase subunit with chloroplast membranes (2009), J. Biol. Chem., 284, 24783-24796.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
GENOMES UNCOUPLED 4 GUN4 enhances measureable Mg-protoporphyrin IX in chloroplast extracts Pisum sativum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
43000
-
subunit I ChlI, SDS-PAGE Arabidopsis thaliana
44000
-
subunit I ChlI, SDS-PAGE Pisum sativum
93000
-
subunit D ChlD, SDS-PAGE Pisum sativum
94000
-
subunit D ChlD, SDS-PAGE Arabidopsis thaliana
150000
-
subunit H ChlH, SDS-PAGE Pisum sativum
150000
-
subunit H ChlH, SDS-PAGE Arabidopsis thaliana

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
-
-
-
Pisum sativum
-
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.000002
-
activity in chloroplast extracts Pisum sativum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + protoporphyrin IX + Mg2+ + H2O
-
Pisum sativum ADP + phosphate + Mg-protoporphyrin IX + H+
-
?
ATP + protoporphyrin IX + Mg2+ + H2O
-
Arabidopsis thaliana ADP + phosphate + Mg-protoporphyrin IX + H+
-
?

Synonyms

Synonyms Comment Organism
Mg-chelatase consists of three subunits interactions BchH or ChlH, BchD or ChlD, and BchI or ChlI Pisum sativum
Mg-chelatase consists of three subunits interactions BchH or ChlH, BchD or ChlD, and BchI or ChlI Arabidopsis thaliana