. "DSIF is a heterodimer consisting of hSPT4 (human homolog of yeast Spt4- p14) and hSPT5 (human homolog of yeast Spt5-p160). DSIF association with Pol II may be enabled by Spt5 binding to Pol II creating a scaffold for NELF binding (Wada et al.,1998). Spt5 subunit of DSIF can be phosphorylated by P-TEFb."^^ . "Authored: Gopinathrao, G, 2004-05-03 18:16:42"^^ . . . . . . . "DSIF complex binds to RNA Pol II (hypophosphorylated)"^^ . . . .