c
Figure 2. Distribution of cellulose, hemicellulose, and lignin degradation associated genes across selected genomes. (a) Distribution of enzyme-encoding genes involved in cellulose, hemicellulose, and lignin degradation pathways, as determined by KEGG database mapping. (b) Cellulose degradation pathways showing cellulose degradation genes encoding key enzymes. EC 3.2.1.74 and EC 3.2.1.91 were identified by GH3, GH5, and GH8 in the CAZy database. (c) Carbohydrate-active enzyme families involved in cellulose, hemicellulose, and lignin degradation pathways determined via the CAZy database (GH: glycoside hydrolase, CE: carbohydrate esterases, AA: auxiliary activities). Red text indicates enzymes involved in lignin degradation, blue text indicates enzymes involved in hemicellulose degradation, and black text indicates enzymes involved in cellulose degradation.