Table 1. The top ten enriched functional categories from the metatranscriptome obtained from the RefSeq microbial genomes database.

Functional annotation	Proportion (%)
actin, cytoplasmic 2	5.93
cytochrome c oxidase subunit I	3.90
translation elongation factor EF-1 subunit alpha	2.67
molecular chaperone DnaK	2.49
cytochrome b	2.09
aldehyde dehydrogenase family protein	2.01
elongation factor 1-alpha, partial	1.24
50S ribosomal protein L14	1.15
50S ribosomal protein L3, partial	1.06
molecular chaperone HtpG	1.05