The Auxin-Binding-Protein from Maize Coleoptiles

There is good evidence that auxin-dependent cell elongation (Lobler, Klambt (1985b) and H+ secretion (Barbier-Brygoo et al., 1989) is mediated by an auxin-binding-protein (ABP). The ABP is isolated from maize coleoptiles, purified and characterized by Lobler and Klambt (1985 a,b) and Shimomura et al. (1986). Recently cDNA clones of ABP were isolated, sequenced and further characterized (Hesse et al., 1989; Tillmann et al., 1989; Inohara et al., 1989). These reports confirmed earlier results. The pre-ABP contains a signal peptide and one glycosylation site.