Downloaded datasets, identified cellulase genes and clusters, and coded scripts

Cellulose is a carbon source widespread in nature. However, it is a difficult task for any organism to get carbon atoms from the cellulose as it has a highly complex structure. Only a few taxonomic groups are known to decompose cellulose. They do it by producing cellulases, the various enzymes which break beta-glycosidic bonds in the cellulose.纤维素是自然界中广泛分布的碳源。然而，由于其结构高度复杂，任何生物体从中获取碳原子都并非易事。目前已知仅有少数分类类群能够降解纤维素，此类群通过分泌纤维素酶（cellulases）——一类可断裂纤维素内β-糖苷键（beta-glycosidic bonds）的多种酶类——完成降解过程。