Enables BH domain binding activity and protein dimerization activity. Involved in negative regulation of apoptotic process. Predicted to be located in several cellular components, including cytosol; mitochondrial matrix; and nucleus. Predicted to be part of Bcl-2 family protein complex. Predicted to be active in mitochondrial outer membrane. Orthologous to human MCL1 (MCL1 apoptosis regulator, BCL2 family member). [provided by Alliance of Genome Resources, Apr 2022]