Predicted to enable histone deacetylase binding activity and identical protein binding activity. Predicted to contribute to histone deacetylase activity. Predicted to be involved in several processes, including histone deacetylation; negative regulation of transcription by RNA polymerase II; and substantia nigra development. Predicted to act upstream of or within blastocyst hatching and negative regulation of transcription, DNA-templated. Predicted to be located in cytosol and nuclear body. Predicted to be part of Sin3 complex. Orthologous to human SUDS3 (SDS3 homolog, SIN3A corepressor complex component). [provided by Alliance of Genome Resources, Apr 2022]