Skip to main content
. 2022 Nov 12;15:121. doi: 10.1186/s13068-022-02216-9

Table 1.

Construction and functional screening of metagenomic libraries to identify degradative enzymes

Name of libraries Fosmid backbones Origins Number of clones Size of inserts Positive clones for sequencing
ED library pCT3FK Elephant feces 1372  ~ 40 kb 3 (2 CMCasesa, 1 xylanase)
BM1T library pCT3FK Thermophilic digestate, fermenter 980  ~ 40 kb 15 (3 arabinoxylanases, 9 dual activitiesb, 3 xylanases)
MOD18 library pCC1FOS Thermophilic digestate, fermenter, 50 °C 20000  ~ 40 kb 18 (4 arabinanases, 14 CMCases)
T1T2 library pCC1FOS Thermophilic digestate, fermenter, 55 °C 5000  ~ 40 kb 19 (2 arabinanases, 2 xylanases, 15 CMCases)
Others pCC1FOS/pCT3FK various 5424  ~ 40 kb 0
Total 32776 55

Positive clones were screened by using chromogenic polysaccharide hydrogel (CPH) substrates and insoluble chromogenic biomass (ICB) substrates

aCMCases: carboxymethyl cellulases

bDual activities: both xylanase and arabinoxylanase activities