Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g25260	Pectin methylesterase (PME) inhibitor that can target PME3 in a pH-dependent manner, mainly in slightly acidic conditions (pH 6.0 and 5.0) but not at pH 7.0.	Tuning of Pectin Methylesterification: PECTIN METHYLESTERASE INHIBITOR 7 MODULATES THE PROCESSIVE ACTIVITY OF CO-EXPRESSED PECTIN METHYLESTERASE 3 IN A pH-DEPENDENT MANNER.; 2015; DOI: 10.1074/jbc.m115.639534; PMID: 26183897; https://pubmed.ncbi.nlm.nih.gov/26183897/ | Structural and dynamical characterization of the pH-dependence of the pectin methylesterase-pectin methylesterase inhibitor complex.; 2017; DOI: 10.1074/jbc.ra117.000197; PMID: 29109147; https://pubmed.ncbi.nlm.nih.gov/29109147/
Arabidopsis	At3g47380	Pectin methylesterase (PME) inhibitor involved in the maintenance of cell wall integrity in response to necrotrophic pathogens.	No verified direct reference in this release