binding. similar to expressed protein [Oryza sativa (japonica cultivar-group)] (GB:ABF99240.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO67015.1); similar to hypothetical protein OsI_013334 [Oryza sativa (indica cultivar-group)] (GB:EAY92101.1); contains domain PTHR12975 (PTHR12975)