protein binding / zinc ion binding. similar to protein binding / zinc ion binding [Arabidopsis thaliana] (TAIR:AT5G45100.1); similar to hypothetical protein [Vitis vinifera] (GB:CAN83796.1); contains InterPro domain Zinc finger, RING-type; (InterPro:IPR001841); contains InterPro domain S-ribonuclease binding protein, SBP1, pollen (InterPro:IPR017066)