Difference between revisions of "QUAST"

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(Created page with "==What it does== QUAST = QUality ASsessment Tool. The tool evaluates genome assemblies by computing various metrics. If you have one or multiple genome assemblies, you can a...")
 
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The tab delimited Quast report will contain the following information::
 
The tab delimited Quast report will contain the following information::
<nowiki>
+
 
  Assembly                  pit_fna cef_fna car_fna
+
  * Assembly                  pit_fna cef_fna car_fna
  # contigs (>= 0 bp)          100      91      94
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  * # contigs (>= 0 bp)          100      91      94
  # contigs (>= 1000 bp)        62      58      61
+
  * # contigs (>= 1000 bp)        62      58      61
  Total length (>= 0 bp)    6480635 6481216 6480271
+
  * Total length (>= 0 bp)    6480635 6481216 6480271
  Total length (>= 1000 bp) 6466917 6468946 6467103
+
  * Total length (>= 1000 bp) 6466917 6468946 6467103
  # contigs                      71      66      70
+
  * # contigs                      71      66      70
  Largest contig            848753  848766  662053
+
  * Largest contig            848753  848766  662053
</nowiki>
+

Revision as of 19:48, 27 March 2019

What it does

QUAST = QUality ASsessment Tool. The tool evaluates genome assemblies by computing various metrics.

If you have one or multiple genome assemblies, you can assess their quality with Quast. It works with or without reference genome. If you are new to Quast, start by reading its `manual page <http://quast.bioinf.spbau.ru/manual.html>`_.

Using Quast without reference

Without reference Quast can calculate a number of assembly related-metrics but cannot provide any information about potential misassemblies, inversions, translocations, etc. Suppose you have three assemblies produced by Unicycler corresponding to three different antibiotic treatments *car*, *pit*, and *cef* (these stand for carbenicillin, piperacillin, and cefsulodin, respectively). Evaluating them without reference will produce the following Quast outputs:

The tab delimited Quast report will contain the following information::

* Assembly                  pit_fna cef_fna car_fna
* # contigs (>= 0 bp)           100      91      94
* # contigs (>= 1000 bp)         62      58      61
* Total length (>= 0 bp)    6480635 6481216 6480271
* Total length (>= 1000 bp) 6466917 6468946 6467103
* # contigs                      71      66      70
* Largest contig             848753  848766  662053
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