Table S1.

List of the RMSD and sequence identity of STAT6^CF with structures of STAT proteins

PDB ID code	Protein	Phosphorylation	Protein stoichiometry	Species	Identity (%)	Z score*	RMSD of Cα (Å)*
1BF5	STAT1-DNA	Yes	Dimer	Human	30	29.8	2.7
1BG1	STAT3b-DNA	Yes	Dimer	Mouse	31	29.0	2.6
4E68	STAT3b-DNA	No	Dimer	Mouse	31	28.6	2.6
1YVL	STAT1	No	Monomer	Human	27	29.9	2.4
3CWG	STAT3	No	Monomer	Mouse	30	30.7	2.3
1Y1U	STAT5a	No	Dimer	Mouse	46	34.3	2.2
1UUR	Dd-STATa	Yes	Dimer	Mold	31	18.7	5.1
1UUS	Dd-STATa	Yes	Dimer	Mold	31	17.1	4.3

^*Data were derived from DALI service using STAT6^CF structure as reference.