zinc ion binding. similar to protein binding / zinc ion binding [Arabidopsis thaliana] (TAIR:AT5G61110.1); similar to hypothetical protein [Vitis vinifera] (GB:CAN63105.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO62131.1); contains InterPro domain Zinc finger, FYVE/PHD-type; (InterPro:IPR011011)