integral membrane transporter family protein. similar to integral membrane transporter family protein [Arabidopsis thaliana] (TAIR:AT1G64890.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO38987.1); contains InterPro domain Biopterin transport-related protein BT1; (InterPro:IPR004324); contains InterPro domain MFS general substrate transporter (InterPro:IPR016196)