SART-1 is a protein involved in cell cycle arrest and pre-mRNA splicing [1]. It has been shown to be a component of U4/U6 x U5 tri-snRNP complex in human, Schizosaccharomyces pombe and Saccharomyces cerevisiae [2]. SART-1 is a known tumour antigen in a range of cancers recognised by T cells [1].

1: Ubiquitin-like protein Hub1 is required for pre-mRNA splicing and localization of an essential splicing factor in fission yeast. Wilkinson CR, Dittmar GA, Ohi MD, Uetz P, Jones N, Finley D; Curr Biol 2004;14:2283-2288. PMID:15620657

2: Small nuclear ribonucleoprotein remodeling during catalytic activation of the spliceosome. Makarov EM, Makarova OV, Urlaub H, Gentzel M, Will CL, Wilm M, Luhrmann R; Science 2002;298:2205-2208. PMID:12411573