after Apical Transport in the Drosophila Blastoderm

is grk mRNA, which encodes a TGF-α protein. The Grk in addition to requiring kinesin for its transport, osk signal acts twice during oogenesis, first to initiate the mRNA is thought to be anchored in an actin-dependent anteroposterior axis and later to initiate the dorso- manner. osk mRNA localization also requires the actin ventral axis (Gonzalez-Reyes et al., 1995; Neuman-Sil- associated proteins, Moesin and Tropomyosin (Erdelyi berberg and Schüpbach, 1993). The minus end directed et al., 1995; Glotzer et al., 1997; Jankovics et al., 2002), MT motor cytoplasmic dynein (dynein) transports gur- as well as bifocal, which may act as actin-dependent anchors (Babu et al., 2004). The maintenance of yeast ASH1 mRNA localization to the bud involves Bud6p/*Correspondence