Table 1.

Reported archaeal β-CASP proteins with their 5′–3′ exo- and/or endoribonucleolytic activity

β-CASP OG	Protein	Reference	Endo-	5′–3′Exo
aCPSF1	PAB1868	This work	+	+
	MJ1236*	Levy et al. (15)	+	−
aCPSF1b	MJ0162*	Levy et al. (15)	−	+
aCPSF2	Sso0386*	Hasenohrl et al. (25)	−	+
aRNAse J	PAB1751	Clouet-d'Orval et al. (24)	−	+
	TK 1409	Clouet-d'Orval et al. (24)	−	+
	MJ0861	Levy et al. (15)	−	+

The proteins marked by asterisks were misidentified as aRNase J homologs.