multiPrime 2.1.1

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multiPrime

multiPrime is an error-tolerant primer design tool for broad-spectrum pathogens detection. It proposes a solution for the minimum degeneracy degenerate primer design with error (MD-EDPD).

1. Install

pip

pip3 install multiPrime

• pip python >=3.7

2. Usage

$ multiPrime -h 
multiPrime -i input -o output
           Options: { -l [18] -n [4] -d [10] -v [1] -g [0.2,0.7] -f [0.8] -c [4] -p [10] -a [4] }

Parameters：

Parameters	Description
-i/--input	Input file: Result of multi-alignment. (muscle, mafft or others)
-l/--plen	Length of primer. Default: 18
-n/--dnum	Number of degenerate. Default: 4.
-v/--variation	Max mismatch number of primer. Default: 1.
-e/--entropy	Entropy is actually a measure of disorder. This parameter is used to judge whether the window is conservation. Entropy of primer-length window. Default: 3.6.
-g/--gc	Filter primers by GC content. Default [0.2,0.7].
-s/--size	Number of degenerate. Default: 4.
-f/--fraction	Filter primers by match fraction (Coverage with errors). Default: 0.8.
-c/--coordinate	Mismatch index is not allowed to locate in start or stop. otherwise, it won't be regard as the mis-coverage. With this param, you can control the index of Y-distance (number=variation and position of mismatch) when calculate coverage with error.Default: 4.
-p/--proc	Number of process to launch. Default: 20.
-a/--away	Filter hairpin structure, which means distance of the minimal paired bases. Default: 4. Example:(number of X) AGCT[XXXX]AGCT. Primers should not have complementary sequences (no consecutive 4 bp complementarities),otherwise the primers themselves will fold into hairpin structure.
-o/--out	Output file: candidate primers. e.g. [*].candidate.primers.txt.

3. Results

Three output files：

• output：Information of primer.
• output.gap_seq_id_json: Positions and non-contained sequences caused by errors (number of errors are greater than threshold).
• output.non_coverage_seq_id_json: Positions and non-contained sequences.

4. test dir

multiPrime/example