Predicted to enable chromatin DNA binding activity and histone binding activity. Involved in several processes, including nematode male tail tip morphogenesis; positive regulation of Ras protein signal transduction; and vulval cell fate specification. Located in nucleus. Expressed in several structures, including P3.pa; P3.pp; P4.pa; P5.ppp; and P7.paa. Is an ortholog of human SBNO1 (strawberry notch homolog 1).