Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At3g19390	Probable thiol protease.	No verified direct reference in this release
Arabidopsis	At5g43060	Probable thiol protease.	No verified direct reference in this release
Arabidopsis	At4g35350	Cysteine protease involved in xylem tracheary element (TE) autolysis during xylogenesis in roots.	Cysteine proteases XCP1 and XCP2 aid micro-autolysis within the intact central vacuole during xylogenesis in Arabidopsis roots.; 2008; DOI: 10.1111/j.1365-313x.2008.03592.x; PMID: 18573193; https://pubmed.ncbi.nlm.nih.gov/18573193/
Rice	Os04g0650000	Oryzain alpha chain.	No verified direct reference in this release