Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At1g31340	Ubiquitin exists either covalently attached to another protein, or free (unanchored).	The Arabidopsis cullin AtCUL1 is modified by the ubiquitin-related protein RUB1.; 1999; DOI: 10.1073/pnas.96.26.15342; PMID: 10611386; https://pubmed.ncbi.nlm.nih.gov/10611386/ | The ubiquitin-related protein RUB1 and auxin response in Arabidopsis.; 1998; DOI: 10.1126/science.280.5370.1760; PMID: 9624055; https://pubmed.ncbi.nlm.nih.gov/9624055/
Arabidopsis	At2g35635	Ubiquitin exists either covalently attached to another protein, or free (unanchored).	No verified direct reference in this release
Rice	Os09g0420800	Ubiquitin exists either covalently attached to another protein, or free (unanchored).	No verified direct reference in this release
Rice	Os06g0650100	Ubiquitin exists either covalently attached to another protein, or free (unanchored).	No verified direct reference in this release