Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At5g41580	Together with MOM1 and PIAL1, regulates transcriptional gene silencing (TGS) independently of changes in DNA methylation.	Arabidopsis PIAL1 and 2 promote SUMO chain formation as E4-type SUMO ligases and are involved in stress responses and sulfur metabolism.; 2014; DOI: 10.1105/tpc.114.131300; PMID: 25415977; https://pubmed.ncbi.nlm.nih.gov/25415977/ | The SUMO E3 Ligase-Like Proteins PIAL1 and PIAL2 Interact with MOM1 and Form a Novel Complex Required for Transcriptional Silencing.; 2016; DOI: 10.1105/tpc.15.00997; PMID: 27113777; https://pubmed.ncbi.nlm.nih.gov/27113777/
Arabidopsis	At1g08910	Together with MOM1 and PIAL2, regulates transcriptional gene silencing (TGS) independently of changes in DNA methylation.	Arabidopsis PIAL1 and 2 promote SUMO chain formation as E4-type SUMO ligases and are involved in stress responses and sulfur metabolism.; 2014; DOI: 10.1105/tpc.114.131300; PMID: 25415977; https://pubmed.ncbi.nlm.nih.gov/25415977/ | The SUMO E3 Ligase-Like Proteins PIAL1 and PIAL2 Interact with MOM1 and Form a Novel Complex Required for Transcriptional Silencing.; 2016; DOI: 10.1105/tpc.15.00997; PMID: 27113777; https://pubmed.ncbi.nlm.nih.gov/27113777/