A predicted endoRNase of the Barnase-EndoU-ColicinE5/D-RelE like nuclease fold found in polyvalent proteins of phages. The predicted active site contains a conserved arginine and threonine residues [1].

1: Polyvalent Proteins, a Pervasive Theme in the Intergenomic Biological Conflicts of Bacteriophages and Conjugative Elements. Iyer LM, Burroughs AM, Anand S, de Souza RF, Aravind L; J Bacteriol. 2017; [Epub ahead of print] PMID:28559295