tokens: Here , we describe a tyrosine phosphorylated nuclear protein , YT521-B , and show that it interacts with the nuclear transcriptosomal component scaffold attachment factor B , and the 68-kDa Src substrate associated during mitosis , Sam68 .
folded_tokens: here , we describe a tyrosine phosphorylated nuclear protein , yt521-b , and show that it interact with the nuclear transcriptosomal component scaffold attachment factor b , and the 68-kda src substrate associate during mitosis , sam68 .