integral membrane family protein / nodulin MtN21-related. similar to nodulin MtN21 family protein [Arabidopsis thaliana] (TAIR:AT5G47470.1); similar to integral membrane protein, putative [Brassica oleracea] (GB:ABD64979.1); contains InterPro domain Protein of unknown function DUF6, transmembrane; (InterPro:IPR000620)