MassWiz
Encyclopedia
MassWiz is an open source software for protein identification from mass spectrometry
Mass spectrometry
Mass spectrometry is an analytical technique that measures the mass-to-charge ratio of charged particles.It is used for determining masses of particles, for determining the elemental composition of a sample or molecule, and for elucidating the chemical structures of molecules, such as peptides and...

 data. Developed at Institute of Genomics and Integrative Biology
Institute of Genomics and Integrative Biology
Institute of Genomics and Integrative Biology is a scientific research institute devoted primarily to integrated biological research. It is a part of Council of Scientific and Industrial Research , India....

, it is currently in its beta release. It has been developed to better the existing methods by finding semi and non-enzymatic peptides to enhance the confidence in protein identifications. The Software aims at easy usability by automating the downstream analysis after identification of peptides by incorporating significance estimation of peptide hits by integrating FDR analysis
False discovery rate
False discovery rate control is a statistical method used in multiple hypothesis testing to correct for multiple comparisons. In a list of rejected hypotheses, FDR controls the expected proportion of incorrectly rejected null hypotheses...

.

Commandline version

MassWiz has a Windows 32 command line version ( Sourceforge link ) for high throughput data analyses. The FDR analysis is directly plugged into the algorithm and the users can choose the type of target-decoy strategy they want to follow (i.e. either concatenated or separate target-decoy search).

Webserver Algorithms and Tools

  1. Probability and intensity based PMF search
  2. Intensity and ion abundance based MS/MS search identifying semi+non-enzymatic peptides
  3. Candidate peptide validation
  4. Mass and pI calculator
  5. mzXML file converter
  6. Custom Database for targeted studies
  7. Customized local BLAST in the custom database
  8. Graphical representation of the matches found.
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