Predicted to be involved in endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA). Predicted to be part of 90S preribosome. Predicted to be active in nucleolus. Is expressed in cervico-thoracic ganglion; tail dorsal root ganglion; and thymus primordium. Orthologous to human KRI1 (KRI1 homolog). [provided by Alliance of Genome Resources, Apr 2022]