Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g22260	Acts early in chloroplast biogenesis as a component of a redox chain responsible for phytoene desaturation.	A plastid terminal oxidase associated with carotenoid desaturation during chromoplast differentiation.; 2000; DOI: 10.1104/pp.123.4.1427; PMID: 10938359; https://pubmed.ncbi.nlm.nih.gov/10938359/ | Sequences required for the activity of PTOX (IMMUTANS), a plastid terminal oxidase: in vitro and in planta mutagenesis of iron-binding sites and a conserved sequence that corresponds to Exon 8.; 2005; DOI: 10.1074/jbc.m508940200; PMID: 16249174; https://pubmed.ncbi.nlm.nih.gov/16249174/