UniprotKB/SwissProt ID: P16127 (P16127)
Gene Name:
CHLI1
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Involved in chlorophyll biosynthesis. Catalyzes the insertion of magnesium ion into protoporphyrin IX to yield Mg-protoporphyrin IX. The magnesium-chelatase is a complex of three subunits, CHLI, CHLD and CHLH. The reaction takes place in two steps, with an ATP-dependent activation followed by an ATP-dependent chelation step. Possesses high affinity for ATP and may play a major role in chlorophyll biosynthesis. Does not bind abscisic acid (ABA), but is a positive regulator of ABA signaling (PubMed:11842180, PubMed:15815918, PubMed:17472958, PubMed:18846282, PubMed:23011401). May be involved in ABA signaling in the control of stomatal aperture, but does not seem to have an effect on ABA-induced gene expression (PubMed:24840863)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Plastid, chloroplast
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