Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At5g23730	Functions in association with RUP1 as repressor of UV-B-induced photomorphogenesis mediated by UVR8 and HY5.	Negative feedback regulation of UV-B-induced photomorphogenesis and stress acclimation in Arabidopsis.; 2010; DOI: 10.1073/pnas.0914532107; PMID: 21041653; https://pubmed.ncbi.nlm.nih.gov/21041653/ | EFO1 and EFO2, encoding putative WD-domain proteins, have overlapping and distinct roles in the regulation of vegetative development and flowering of Arabidopsis.; 2011; DOI: 10.1093/jxb/erq336; PMID: 21242318; https://pubmed.ncbi.nlm.nih.gov/21242318/
Arabidopsis	At5g52250	Functions in association with RUP2 as repressor of UV-B-induced photomorphogenesis mediated by UVR8 and HY5, likely in coordination with DHU1.	Negative feedback regulation of UV-B-induced photomorphogenesis and stress acclimation in Arabidopsis.; 2010; DOI: 10.1073/pnas.0914532107; PMID: 21041653; https://pubmed.ncbi.nlm.nih.gov/21041653/ | EFO1 and EFO2, encoding putative WD-domain proteins, have overlapping and distinct roles in the regulation of vegetative development and flowering of Arabidopsis.; 2011; DOI: 10.1093/jxb/erq336; PMID: 21242318; https://pubmed.ncbi.nlm.nih.gov/21242318/ | DHU1 negatively regulates UV-B signaling via its direct interaction with COP1 and RUP1.; 2017; DOI: 10.1016/j.bbrc.2017.07.110; PMID: 28735869; https://pubmed.ncbi.nlm.nih.gov/28735869/
Arabidopsis	At2g32950	E3 ubiquitin-protein ligase that acts as a repressor of photomorphogenesis and as an activator of etiolation in darkness.	Two interacting bZIP proteins are direct targets of COP1-mediated control of light-dependent gene expression in Arabidopsis.; 2002; DOI: 10.1101/gad.969702; PMID: 12023303; https://pubmed.ncbi.nlm.nih.gov/12023303/ | Short Hypocotyl in White Light1 Interacts with Elongated Hypocotyl5 (HY5) and Constitutive Photomorphogenic1 (COP1) and Promotes COP1-Mediated Degradation of HY5 during Arabidopsis Seedling Development.; 2015; DOI: 10.1104/pp.15.01184; PMID: 26474641; https://pubmed.ncbi.nlm.nih.gov/26474641/ | PHYTOCHROME INTERACTING FACTOR8 Inhibits Phytochrome A-Mediated Far-Red Light Responses in Arabidopsis.; 2020; DOI: 10.1105/tpc.19.00515; PMID: 31732705; https://pubmed.ncbi.nlm.nih.gov/31732705/ | Role of a COP1 interactive protein in mediating light-regulated gene expression in arabidopsis.; 1998; DOI: 10.1105/tpc.10.7.1083; PMID: 9668129; https://pubmed.ncbi.nlm.nih.gov/9668129/
Arabidopsis	At3g15354	Repressor of photomorphogenesis in the light.	The SPA1-like proteins SPA3 and SPA4 repress photomorphogenesis in the light.; 2003; DOI: 10.1046/j.1365-313x.2003.01813.x; PMID: 12887588; https://pubmed.ncbi.nlm.nih.gov/12887588/ | Functional and expression analysis of Arabidopsis SPA genes during seedling photomorphogenesis and adult growth.; 2006; DOI: 10.1111/j.1365-313x.2006.02812.x; PMID: 16813571; https://pubmed.ncbi.nlm.nih.gov/16813571/ | Arabidopsis SPA proteins regulate photoperiodic flowering and interact with the floral inducer CONSTANS to regulate its stability.; 2006; DOI: 10.1242/dev.02481; PMID: 16854975; https://pubmed.ncbi.nlm.nih.gov/16854975/