In the overview BLAST table for a multi-sequence blast search, as shown in figure 12.10, there is one row for each query
sequence. Each row represents the BLAST result for this query
Overview BLAST table
Figure 12.10: An overview BLAST table summarizing the results for a number of query sequences.
Double-clicking a row will open the BLAST result for this query sequence, allowing more detailed investigation of the result. You can also select one or more rows and click the Open BLAST Output button at the bottom of the view. Consensus sequence can be extracted by clicking the Extract Consensus button at the bottom. Clicking the Open Query Sequence will open a sequence list with the selected query sequences. This can be useful in work flows where BLAST is used as a filtering mechanism where you can filter the table to include e.g. sequences that have a certain top hit and then extract those.
In the overview table, the following information is shown:
- Query: Since this table displays information about several query sequences, the first column is the name of the query sequence.
- Number of hits: The number of hits for this query sequence.
- For the following list, the value of the best hit is displayed together with accession number and description of this hit, with respect to E-value, identity or positive value, hit length or bit score.
- Lowest E-value
- Accession (E-value)
- Description (E-value)
- Greatest identity %
- Accession (identity %)
- Description (identity %)
- Greatest positive %
- Accession (positive %)
- Description (positive %)
- Greatest hit length
- Accession (hit length)
- Description (hit length)
- Greatest bit score
- Accession (bit score)
- Description (bit score)