Predicted to enable cyclin-dependent protein serine/threonine kinase regulator activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to be located in nuclear speck. Predicted to be part of transcription elongation factor complex. Predicted to be active in nucleus. Is expressed in head. Orthologous to human CCNL1 (cyclin L1). [provided by Alliance of Genome Resources, Apr 2022]