Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At1g21310	Structural component which strengthens the primary cell wall.	Characterization of four extensin genes in Arabidopsis thaliana by differential gene expression under stress and non-stress conditions.; 2001; DOI: 10.1093/dnares/8.3.115; PMID: 11475326; https://pubmed.ncbi.nlm.nih.gov/11475326/ | Self-assembly of the plant cell wall requires an extensin scaffold.; 2008; DOI: 10.1073/pnas.0711980105; PMID: 18256186; https://pubmed.ncbi.nlm.nih.gov/18256186/