Predicted to enable RS domain binding activity; identical protein binding activity; and mRNA binding activity. Predicted to be involved in mRNA splice site selection. Predicted to act upstream of or within negative regulation of striated muscle tissue development. Predicted to be located in nucleus. Predicted to be part of U1 snRNP and U2-type prespliceosome. Orthologous to human LUC7L (LUC7 like). [provided by Alliance of Genome Resources, Apr 2022]