Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At2g26550	Probable inactive heme oxygenase.	No verified direct reference in this release
Arabidopsis	At2g26670	Key enzyme in the synthesis of the chromophore of the phytochrome family of plant photoreceptors.	Arabidopsis genomes uncoupled 5 (GUN5) mutant reveals the involvement of Mg-chelatase H subunit in plastid-to-nucleus signal transduction.; 2001; DOI: 10.1073/pnas.98.4.2053; PMID: 11172074; https://pubmed.ncbi.nlm.nih.gov/11172074/ | Signal transduction mutants of Arabidopsis uncouple nuclear CAB and RBCS gene expression from chloroplast development.; 1993; DOI: 10.1016/0092-8674(93)90459-4; PMID: 7690685; https://pubmed.ncbi.nlm.nih.gov/7690685/
Arabidopsis	At1g58300	Catalyzes the opening of the heme ring to form the open-chain tetrapyrrole biliverdin IX with the release of iron and carbon monoxide (CO).	No verified direct reference in this release
Rice	Os03g0395000	Probable inactive heme oxygenase that may play a role in the regulation of phytochrome assembly and photomorphogenesis.	No verified direct reference in this release