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A C++ implementation of the SweetSEQer Python algorithm
License: MIT License
This project forked from optimusmoose/c-seqer
A C++ implementation of the SweetSEQer Python algorithm
License: MIT License
A C++11 rewrite of the Python SweetSEQer algorithm. This version has been compiled and executed in Linux using gnu compiler. This work is a derivative of the original SweetSEQer algorithm licensed to Oliver Serang (2012): https://pubmed.ncbi.nlm.nih.gov/23443135/ Required files if compiling from source: SweetSEQer.cpp MGF.h main_functions.h DeNovo.h DiGraph.h dict.h plot_glycan.py Required Operating Environment: linux (developed in Ubuntu bash shell for Windows 10) g++ 9.3.0 compiler (if compiling from source) gnu plot 5.2 patchlevel 8 Python 2.7 Matplotlib 1.5.3 NetworkX 1.1 Numpy 1.16.6 (If running in Ubuntu bash shell for Windows 10) Xming server 6.9.0.31 for display of charts if desired Execution: Required files: output from compilation .mgf file Compile: e.g. g++ SweetSEQer.cpp Execute the output file (default is 'a.out' unless specified with -o flag on compilation) with 8 parameters: epsilon : maximum absolute error between predicted and actual peak (in m/z) lambda : minimum peak intensity (relative to maximum peak intensity) p : minimum length of inferred peptide sequence g : minimum size of inferred glycan graph (including isotope peaks, not shown in graph) tau : minimum m/z value to include in glycan print output : either 0 (doesn't print text results) or 1 (prints text results for matches) plot results : either 0 (doesn't plot results) or 1 (interactively plots each matching spectrum) MGF file : paths to an MGF files to process Example of execution with parameters: ./a.out 0.01 0.01 1 1 500 1 1 120810_JF_HNU142_5.mgf Output: 1. One .txt file with title of format: MGf file Name "_" epsilon "Da" lambda "int" g "g.txt" Contains a single line per valid spectrum (any spectrum containing glycan fragments meeting the user set p and g parameters) that is contained in the .mgf file, with the following data: Spectrum charge, spectrum pepMass, spectrum rtInSeconds, charge state of spectrum for described fragment, start node of fragment, end node of fragment 2. Two .png files: one for the annotated spectrum and another for the glycan graph; uses the spectrum name as image title.
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