Table 1. Summary of +1 PRF genes in ciliated protozoa of the genus Euplotes.

Species	Genes	Putative slippery sequences	Methods & References
Euplotes raikovi	Mitogen-activated protein kinase	AAA UAA A	Western blot22
Euplotes nobilii	Mitogen-activated protein kinase	AAA UAA A	Western blot23
Euplotes aediculatus	La motif protein	AAA UAA A	Mass spectrometric analysis24
Euplotes octocarinatus	Nuclear protein kinase	AAA UAA A	Nucleic-acid-based analysis37
	cAMP-dependent protein kinase	AAA UAA A	Nucleic-acid-based analysis26
Euplotes minuta	Reverse transcriptase subunits of telomerase	AAA UAA A	Nucleic-acid-based analysis38
Euplotes vannus	Reverse transcriptase subunits of telomerase	AAA UAA G	Nucleic-acid-based analysis38
Euplotes crassus	Reverse transcriptase subunits of telomerase-1	AAA UAA C & AAA UAA G	Nucleic-acid-based analysis39
	Reverse transcriptase subunits of telomerase-2	AAA UAA C	Nucleic-acid-based analysis27
	Reverse transcriptase subunits of telomerase-3	AAA UAA C & AAA UAA G	Nucleic-acid-based analysis27
	C2H2-type zinc finger protein	AAA UAA U	Nucleic-acid-based analysis20
	MORN repeat protein	AAA UAA G	Nucleic-acid-based analysis20
	Ser/Thr protein kinase	AAA UAA C & AAA UAA G & AAA UAA A	Nucleic-acid-based analysis20
	Tec2 transposon ORF2	AAA UAG U	Nucleic-acid-based analysis40