Predicted to enable succinate-CoA ligase (ADP-forming) activity. Predicted to be involved in succinyl-CoA metabolic process and tricarboxylic acid cycle. Predicted to be part of succinate-CoA ligase complex. Predicted to be active in mitochondrion. Is expressed in several structures, including axis; hatching gland; mesoderm; musculature system; and solid lens vesicle. Human ortholog(s) of this gene implicated in mitochondrial DNA depletion syndrome 5. Orthologous to human SUCLA2 (succinate-CoA ligase ADP-forming subunit beta).