nodulin MtN3 family protein. similar to MTN3 (ARABIDOPSIS HOMOLOG OF MEDICAGO TRUNCATULA MTN3) [Arabidopsis thaliana] (TAIR:AT5G23660.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO68342.1); similar to hypothetical protein [Vitis vinifera] (GB:CAN71371.1); similar to hypothetical protein OsI_035009 [Oryza sativa (indica cultivar-group)] (GB:EAY81050.1); contains InterPro domain MtN3 and saliva related transmembrane protein (InterPro:IPR004316)