TABLE 1.
Metagenome sequence BLAST homology by database and domain (E value, <10−3)
| Database or domain | Avg log10 E value | Median log10 E value | No. of sequences | % of totala |
|---|---|---|---|---|
| GenBank nt or nr database | −21.5 | −13.7 | 2,195 | 39 |
| Archaea | −11.4 | −8.2 | 25 | 0.4 (1) |
| Bacteria | −17.1 | −10.1 | 1,031 | 18 (47) |
| Eukaryote | −8.1 | −4.5 | 149 | 2.6 (7) |
| Virus | −28.4 | −21.2 | 962 | 17 (44) |
| Environmental databaseb | −24.5 | −17.1 | 1,731 | 31 |
| No homology | NAc | NA | 1,715 | 30 |
| Total | NA | NA | 5,641 | 100 |
a
For domains the value in parentheses is the percentage of the 2,195 sequences displaying similarity to nt or nr database sequences.
b
The sequence was similar to at least one environmental database sequence (env-nt, env-nr, or viral metagenome) but showed no similarity to the nt or nr database.
c
NA, not applicable.