Table S1 Overview of expression systems for heterologous laccase production in yeasts Source classification Source Laccase Genetically engineered Note to genetically engineered laccases Reference Expression host: Cryptococcus sp. S-2 Fungi, ascomycota Gaeumannomyces graminis LAC2 no [167] Fungi, basidiomycota Trametes versicolor LAC5 no [167] Coriolopsis gallica LCC1 no [162] Pleurotus ostreatus POXA3a, POXA3b no [209] Pleurotus ostreatus POXC, POXA1b no [122] Pleurotus ostreatus POXC, POXA1b directed evolution by random mutagenesis Pleurotus ostreatus POX3, POX4 no [123] Trametes trogii LCC1 no [150,210] LCC1 no [151,183,204] Expression host: Kluyveromyces lactis Fungi, basidiomycota higher activity, increased stability at acidic as well as alkaline pH [152,186] Expression host: Pichia methalonica Fungi, basidiomycota Trametes versicolor Expression host: Pichia pastoris Bacteria Thermus thermophilus SG0.5JP17-16 LACTt no [119] Fungi, ascomycota Botrytis aclada LAC no [159] Monilinia fructigena LCC2 optimized codon usage Gaeumannomyces graminis LAC2 no [167] Yarrowia lipolytica YlLAC no [115] basidiomycete PM1 strain CECT 2971 PM1 directed evolution by random pH-activity profile shifted to mutagenesis and/or DNA the neutral-basic range, recombination in S. cerevisiae increased resistance to halides but produced in P. pastoris [164] Coprinopsis cinerea Okayama-7 #130 CcLCC2 no [158] Coprinus comatus LAC1, LAC2 no [199] Coprinus comatus LAC3, LAC4 fusing an additional 10 amino acids tag at N-terminus volumetric activities dramatically enhanced from undetectable levels [153] Coprinus cinereus LCC5I optimized codon usage effective laccase gene expression [141] Cryptococcus LAC1 no Fungi, basidiomycota effective laccase gene expression [200] [137] neoformans Cyathus bulleri LAC no [127] Cyathus bulleri LCC random mutagenesis Fomes lignosus LCC no Fomes lignosus LCC methane sulfonate-based random mutagenesis in vitro Flammulina velutipes LCC no [202] Ganoderma fornicatum 0814 LAC1 no [131] Ganoderma lucidum GlLCC1 optimized codon usage, GC effective constitutive gene content and regions generating expression under GAP secondary structures promoter and α-factor leader in P. pastoris [207] Ganoderma lucidum LAC1 no [166] Ganoderma lucidum 7071-9 LCCI optimized codon usage Ganoderma sp. En3 LAC-En3-1 no [142,156] Lentinus sp. LCC4 no [109] increased ability to decolorize [155] reactive blue 21 (RB21), a phthalocyanine dye reported to be decolorized only by peroxidases [110] improved expression and kcat effective laccase gene expression [206] [134] Lentinus sp. LCC4 site-directed mutagenesis possibility to evaluate the effect on the laccase activity by single glycosylation site deficiency [109] Lenzites gibbosa LAC no Physisporinus rivulosus LAC1, LAC2 site-directed mutagenesis Pleuotus ostreatus LCCPol no [135] Pleuotus ostreatus POXA1B optimized codon usage, GC effective constitutive gene content and regions generating expression under GAP secondary structures promoter and α-factor leader in P. pastoris [207] Pleurotus sajor-caju P32-1 LAC4 no [133] Polyporus grammocephalus TR16 LAC no [130] Pycnoporus sanguineus LAC no [145] Pycnoporus sanguineus H275 LCC1 no [161] Pycnoporus cinnabarinus LAC1 I-937 no [201] Trametes sanguinea M85-2 LCC1-5 no [129] Trametes sp. AH28-2 LACB no [148] [144] increased specific laccase activity [128] Trametes sp. AH28-2 LACB mutagenesis by low-energy nitrogen ion implantation increased specific laccase activity, light change in its catalytic ability but superior thermal stability Trametes sp. 420 LACC no [146] Trametes sp. 420 LACD no [126,147] Trametes sp. 420 LACD site-directed mutagenesis Trametes sp. 48424 LAC48424-1 no [143] Trametes sp. 5930 LAC5930-1 no [138,140] Trametes trogii LCC1, LCC2 no [28,226,227] Trametes versicolor LCC1, LCC2 no [120,170,208, 223] Trametes versicolor LCCI site-directed mutagenesis Trametes versicolor LCCA, LCCB, LCCC no [154,157,203] Trametes versicolor LCCIV no [125] mutants with different laccase activity redox potential of the active site shifted to more negative values, enhanced rate of electron transfer between an oxidoreductase and an electrode [169] [163] [216] Chromista, oomycota Plants Trametes versicolor LAC5 no [167] Phythophthora capsici LAC1 no [118] Phythophthora capsici LAC2 no [117] Gossypium arboreum LAC1 no [43] Cryphonectria parasitica LAC3 no [192] Melanocarpus albomyces LAC1 site-directed mutagenesis confirmation of the critical role of the last amino acids in the C-terminus of MaLAC1 Myceliophthora thermophila MtL directed evolution by random mutagenesis improved expression, [30,194] increased kcat, enhanced total activity, substrate specificity not changed, higher activity in the presence of organic solvents Myceliophthora thermophila MtL combinatorial saturation mutagenesis through in vivo overlap extension (IVOE) higher kinetic parameters, resistance to high concentrations of organic solvents Expression host: Saccharomyces cerevisiae Fungi, ascomycota [84] [113,215] Fungi, basidiomycota Myceliophthora thermophila MtL in vivo recombine mutant libraries with different nucleotide bias created by in vitro evolution under the selective pressure of increasing concentrations of organic cosolvents higher kinetic parameters, [195] resistance to high concentrations of organic solvents, the electron transfer pathway between the reducing substrate and the T1 copper ion altered, improved catalytic efficiency towards nonphenolic and phenolic substrates, redox potential not significantly altered basidiomycete PM1 strain CECT 2971 PM1 directed evolution by random mutagenesis and/or DNA recombination enhanced total activity, enhanced functional expression, highly active and stable enzyme in terms of temperature, pH range, and organic cosolvents, improved catalytic capacities Coprinus congregatus LAC2 no [139] Coriolus hirsutus PO1, PO2 no [193] Lentinula edodes LCC1, LCC4 no [189] Pleurotus eryngii ERY3 no [188] Pleurotus eryngii ERY4 site-directed mutagenesis analysis the role of the Cterminus of ERY4 protein [112] [124] Pleurotus eryngii ERY3/ERY4 (4NC3) DNA shuffling by DNA recombination to form chimeric laccases from different laccase isoforms, displayed on the cell surface of S. cerevisiae chimeras with best performances in terms of enzymatic activities, affinities for different substrates and stability at a broad range of temperatures and pHs, S. cerevisiae surface display [222] Pleurotus ostreatus POXC,POXA1b no Pleurotus ostreatus POXC,POXA1b directed evolution by random mutagenesis higher activity, increased stability at acidic as well as alkaline pH [152,186] Pleurotus ostreatus POXA1b site-directed mutagenesis analysis the role of the Cterminal tail of POXA1b in affecting its catalytic and stability properties [29] Pleurotus ostreatus POX3, POX4 no [122] [123] Pycnoporus cinnabarinus LAC1 directed evolution by random mutagenesis combined with site-directed mutagenesis and/or in vivo overlap extension (IVOE) enhanced total activity, [168] improved secretion levels due to the evolved α-factor, increased kcat, pH activity profile shifted to more neutral values, the thermostability and the broad substrate specificity retained Pycnoporus cinnabarinus/PM1 basidiomycete DNA shuffling by DNA recombination to form chimeric laccases from two different fungi active hybrid laccases with combined characteristics in terms of pH activity and thermostability PcLAC1/PM1 [187] Plants Pycnoporus coccineus LCC1 no [196] Trametes sp. AH28-2 LACA no [198] Trametes sp. C30 LAC1-5 no [171,191,197] Trametes sp. C30 LAC3 optimized codon usage effective laccase gene expression Trametes sp. C30 LAC3/LAC1, LAC3/LAC2, LAC3/LAC5 DNA shuffling by DNA recombination to form chimeric laccases from different laccase isoforms pH tolerance extended towards [31] alkaline pH values, increased kcat Trametes sp. Ha1 laccase I site-directed mutagenesis, displayed on the cell surface of S. cerevisiae S. cerevisiae surface display Trametes versicolor LCC1, LCC2 no [121,160] Trametes versicolor LCCIII no [136] Trametes versicolor AUMH8272 LCCα no [132] Trametes sanguinea M85-2 LCC1 no [129] Pinus taeda LAC2 no [116] Pycnoporus cinnabarinus LAC1 no [212] [190] [225] Expression host: Yarrowia lipolytica Fungi, basidiomycota Trametes versicolor IIIb no [213] Trametes versicolor IIIb site-directed mutagenesis increased kcat, optimal pH shifted [214] Trametes versicolor DSM11269 LCC1 directed evolution combining random and site-directed mutagenesis in Y.lipolytica enhanced secreted enzyme activity, increased catalytic efficiency [149]