Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At2g02950	May be responsible for light-regulated cytoplasmic sequestration of phytochromes or may be a negative regulator of phytochrome B signaling.	PKS1, a substrate phosphorylated by phytochrome that modulates light signaling in Arabidopsis.; 1999; DOI: 10.1126/science.284.5419.1539; PMID: 10348744; https://pubmed.ncbi.nlm.nih.gov/10348744/ | PHYTOCHROME KINASE SUBSTRATE 1 is a phototropin 1 binding protein required for phototropism.; 2006; DOI: 10.1073/pnas.0603799103; PMID: 16777956; https://pubmed.ncbi.nlm.nih.gov/16777956/ | PHYTOCHROME KINASE SUBSTRATE1 regulates root phototropism and gravitropism.; 2008; DOI: 10.1104/pp.107.106468; PMID: 18024556; https://pubmed.ncbi.nlm.nih.gov/18024556/ | The Arabidopsis PHYTOCHROME KINASE SUBSTRATE2 protein is a phototropin signaling element that regulates leaf flattening and leaf positioning.; 2010; DOI: 10.1104/pp.109.150441; PMID: 20071603; https://pubmed.ncbi.nlm.nih.gov/20071603/
Arabidopsis	At1g14280	Acts predominantly in the phot1 pathway.	No verified direct reference in this release
Arabidopsis	At5g04190	Modulates phytochrome-mediated control of hypocotyl growth orientation.	No verified direct reference in this release
Arabidopsis	At1g18810	Probably involved in the phytochrome signaling pathway.	No verified direct reference in this release