OsGUN4

• Symbol: OsGUN4
• MSU: LOC_Os11g16550
• RAPdb: Os11g0267000

• C-terminal residues of oryza sativa GUN4 are required for the activation of the ChlH subunit of magnesium chelatase in chlorophyll synthesis, 2012, FEBS Lett.
• A down-regulated epi-allele of the genomes uncoupled 4 gene generates a xantha marker trait in rice., 2014, Theor Appl Genet.
• A Suppressor Mutation Partially Reverts the xantha Trait via Lowered Methylation in the Promoter of Genomes Uncoupled 4 in Rice., 2019, Front Plant Sci.
• Mutations of the Genomes Uncoupled 4 Gene Cause ROS Accumulation and Repress Expression of Peroxidase Genes in Rice, 2021, Front Plant Sci.
• Mutations of the Genomes Uncoupled 4 Gene Cause ROS Accumulation and Repress Expression of Peroxidase Genes in Rice, 2021, Front Plant Sci.

Genbank accession number

• Maximum magnesium chelatase activity requires pre-activation of OsChlH with OsGUN4, Mg(2+) and protoporphyrin-IX
• OsGUN4 and OsChlH preincubated without protoporphyrin-IX yields magnesium chelatase activity similar to assays without OsGUN4, suggesting formation of a dead-end complex