IRX12/LAC4 (laccase 4); copper ion binding / oxidoreductase. Identical to Laccase-4 precursor (IRX12) [Arabidopsis Thaliana] (GB:O80434;GB:Q940U7); similar to LAC10 (laccase 10), copper ion binding / oxidoreductase [Arabidopsis thaliana] (TAIR:AT5G01190.1); similar to LAC16 (laccase 16), copper ion binding / oxidoreductase [Arabidopsis thaliana] (TAIR:AT5G58910.1); similar to LAC11 (laccase 11), copper ion binding / oxidoreductase [Arabidopsis thaliana] (TAIR:AT5G03260.1); similar to diphenol oxidase (GB:AAC49536.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO15786.1); similar to unnamed protein product [Vitis vinifera] (GB:C