Mercurial > repos > martasampaio > phagepromoter
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author | martasampaio |
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date | Mon, 28 Oct 2019 11:57:47 -0400 |
parents | b575af79e250 |
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=============== PhagePromoter =============== Get promoter of phage genomes PhagePromoter is a python script that predicts promoter sequences in phage genomes, using a machine learning SVM model. This model was built from a train dataset with 19 features and 3200 examples (800 positives and 2400 negatives), each representing a 65 bp sequence of a phage genome. The positive cases represent the phage sequences that are already identified as promoters. **Inputs:** * genome format: fasta vs genbank; * genome file: acepts both genbank and fasta formats; * both strands (yes or no): allows the search in both DNA strands; * threshold: represents the probability of the test sequence be a promoter (float between 0 and 1)" * family: The family of the testing phage - Podoviridae, Siphoviridae or Myoviridae; * Bacteria: The host of the phage. The train dataset include the following hosts: Bacillus, EColi, Salmonella, Pseudomonas, Yersinia, Klebsiella, Pectobacterium, Morganella, Cronobacter, Staphylococcus, Streptococcus, Streptomyces, Lactococcus. If the testing phage has a different host, select the option 'other', and it is recommended the use of a higher threshold value for more accurate results. * phage type: The type of the phage, according to its lifecycle: virulent or temperate; **Outputs:** This tool outputs two files: a FASTA file and a table in HTML, with the locations, sequence, score and type (recognized by host or phage RNAP) of the predicted promoters. **Requirements:** * Biopython * Sklearn * Numpy * Pandas