TABLE 3.
Carbohydrate active genes and their functions identified from CAZy database.
| Putative CAZy genes in the four metagenomes (≥50% identity, ≥50% subject coverage) | |||||
| CAZY family | Annotations | SO | DJ | MA | JJ |
| Hemicellulose degradation | |||||
| GH11 | Endo 1,4-beta-xylanase | 2 | 2 | 1 | 1 |
| CE4 | Polysaccharide deacetylase, Chitin deacetylase | 15 | 53 | 17 | 10 |
| GH39 | Xylan 1,4-beta-xylosidase | 1 | 1 | 0 | 1 |
| GH43 | Beta-xylosidase, arabinan endo-1,5-α-L-arabinosidase, α-N-arabinofuranosidase | 9 | 21 | 8 | 13 |
| CE14 | Deacetylase | 11 | 10 | 8 | 4 |
| GH2 | Beta-galactosidase | 8 | 9 | 4 | 3 |
| GH35 | Beta-galactosidase | 3 | 6 | 1 | 6 |
| GH36 | A galactosidase | 4 | 8 | 5 | 4 |
| GH4 | A galactosidase | 19 | 30 | 16 | 17 |
| GH42 | Beta-galactosidase, beta-galacturonidase | 6 | 11 | 4 | 3 |
| GH1 | Beta-glucosidase | 60 | 76 | 54 | 52 |
| GH16 | Beta-glucanase, endo-beta-1,3-1,4 glucanase | 1 | 0 | 1 | 1 |
| GH5 | Endoglucanase, cellulase | 2 | 2 | 1 | 1 |
| GH3 | Beta-glucosidase | 12 | 21 | 11 | 9 |
| AA3 | Oxidoreductase | 3 | 3 | 2 | 1 |
| GH31 | A xylosidase, α glucosidase | 2 | 4 | 6 | 3 |
| GH13 | A amylase, glucan 1,6-α-glucosidase, trehalose synthase, neopullulanase | 24 | 36 | 22 | 19 |
| GT5 | Glycogen/starch_synthase | 1 | 3 | 1 | 2 |
| CBM26 | A -amylase | 1 | 0 | 0 | 0 |
| GH78 | A -rhamnosidase | 1 | 2 | 0 | 0 |
| GH28 | Polygalacturonase | 3 | 3 | 3 | 1 |
| PL1 | Pectate lyase | 3 | 5 | 3 | 1 |
| PL3 | Pectate lyase | 1 | 2 | 1 | 1 |
| PL8 | Polysaccharide lyase family_8 | 1 | 2 | 0 | 0 |
| PL11 | Rhamnogalacturonan lyase | 1 | 2 | 1 | 0 |
| CE8 | Pectinesterase | 1 | 4 | 1 | 0 |
| GH51 | A -N-arabinofuranosidase | 5 | 6 | 2 | 2 |
| GH53 | Arabinogalactan endo-1,4-beta-galactosidase | 1 | 0 | 0 | 0 |
| GT85 | Arabinofuranosyl transferase | 1 | 0 | 0 | 0 |
| GH105 | Rhamnogalacturonyl hydrolase | 1 | 6 | 3 | 2 |
| GT53 | Arabinosyl transferase | 1 | 0 | 0 | 0 |
| GH92 | A -1,2-mannosidase | 2 | 4 | 0 | 3 |
| GH38 | A mannosidase | 7 | 10 | 3 | 5 |
| GH26 | Beta-mannanase, mannan endo-1,4-beta-mannosidase | 2 | 2 | 3 | 0 |
| GT0 | Mannosyltransferase | 8 | 4 | 2 | 1 |
| Lipase/esterase | |||||
| CE1 | Tributyrin esterase | 5 | 5 | 4 | 4 |
| CE0 | Hydrolase, GDSL-like Lipase | 3 | 10 | 4 | 1 |
| AA0 | Multicopper oxidase | 1 | 5 | 3 | 0 |
| AA1 | Multicopper oxidase | 0 | 1 | 0 | 0 |
| Oligosaccharides production | |||||
| GH32 | Levanase, sucrose-6-phosphate hydrolase, sucrase-6-phosphate hydrolase | 13 | 18 | 11 | 11 |
| GH68 | Levansucrase | 2 | 0 | 1 | 1 |
| Others | |||||
| GT4 | D-inositol 3-phosphate glycosyltransferase, glycosyl transferase | 42 | 49 | 36 | 29 |
| GH18 | Chitinase | 3 | 4 | 2 | 0 |
| GH29 | A -L-fucosidase, α-1,3/4-fucosidase | 4 | 3 | 2 | 6 |
| GH46 | Chitosanase | 1 | 1 | 1 | 0 |
| GH88 | Glucuronyl hydrolase | 5 | 6 | 3 | 7 |
| GH77 | 4-α-glucanotransferase | 1 | 0 | 0 | 0 |
| CBM12 | Chitinase | 1 | 3 | 0 | 1 |
| Total | 304 | 453 | 251 | 226 | |
| 1234 | |||||