This family consists of several plant proteins and includes RHO1, an interactor of the exocyst subunit Exo70A1 and has been shown to be required for seed coat mucilage deposition [1].

1: Arabidopsis exocyst subunits SEC8 and EXO70A1 and exocyst interactor ROH1 are involved in the localized deposition of seed coat pectin. Kulich I, Cole R, Drdova E, Cvrckova F, Soukup A, Fowler J, Zarsky V; New Phytol. 2010;188:615-625. PMID:20618910