Predicted to enable 3'-5' exonuclease activity. Predicted to be involved in several processes, including cellular response to ionizing radiation; negative regulation of cell cycle phase transition; and substantia nigra development. Predicted to be located in chromosome and nucleoplasm. Predicted to be part of checkpoint clamp complex. Orthologous to human RAD1 (RAD1 checkpoint DNA exonuclease). [provided by Alliance of Genome Resources, Apr 2022]