BB (BIG BROTHER); protein binding / zinc ion binding. similar to zinc finger (C3HC4-type RING finger) family protein [Arabidopsis thaliana] (TAIR:AT3G19910.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO40855.1); contains InterPro domain Zinc finger, RING/FYVE/PHD-type (InterPro:IPR013083); contains InterPro domain Zinc finger, RING-type; (InterPro:IPR001841)