SWI5-dependent HO expression protein 3 (She3) is an RNA-binding protein that binds specific mRNAs, including the mRNA of Ash1, which is invalid in cell-fate determination. She3 acts as an adapter protein that docks the myosin motor Myo4p onto an Ash1-She2p ribonucleoprotein complex [1]. She3 seems to bind to Myo4p and Shep2p via different domains [2].

1: The myosin motor, Myo4p, binds Ash1 mRNA via the adapter protein, She3p. Takizawa PA, Vale RD; Proc Natl Acad Sci U S A. 2000;97:5273-5278. PMID:10792032

2: She2p, a novel RNA-binding protein tethers ASH1 mRNA to the Myo4p myosin motor via She3p. Bohl F, Kruse C, Frank A, Ferring D, Jansen RP; EMBO J. 2000;19:5514-5524. PMID:11032818