https://github.com/cpanse/specter

Specter: linear deconvolution for targeted analysis of data-independent acquisition mass spectrometry proteomics

https://github.com/cpanse/specter

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Specter: linear deconvolution for targeted analysis of data-independent acquisition mass spectrometry proteomics

Basic Info
  • Host: GitHub
  • Owner: cpanse
  • Language: Python
  • Default Branch: master
  • Homepage:
  • Size: 405 KB
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Fork of rpeckner-broad/Specter
Created about 8 years ago · Last pushed about 8 years ago

https://github.com/cpanse/Specter/blob/master/

# Specter

Specter is an algorithm for the targeted analysis of data-independent acquisition mass spectrometry proteomics experiments, which is described in detail in our paper in [*Nature Methods*](http://dx.doi.org/10.1038/nmeth.4643). It can analyze data from any instrument type and window acquisition scheme. The required user inputs are a DIA data file in centroided mzML format, a spectral library in blib format, and a mass accuracy parameter, specified in parts-per-million. 

The raw output of Specter is a .csv file describing the total ion intensities (= sum of fragment ion intensities) of each precursor in the spectral library at each retention time point of the experiment. A snippet of the typical raw output file looks like this:
```
Scan index    Retention time (s)    Precursor sequence     Precursor charge    Total ion intensity
  10032          268.3763              ETLDASLPSDYLK               2                  1,569,034
  10032          268.3763             NPAADAGSNNASKK               2                  3,112,580
  10033          268.4273                 IVLVDDSIVR               2                    722,175
```
with the identifications and quantifications based on these scan-by-scan total ion intensities reported separately:
```
Precursor sequence    Precursor charge      Quant
   ETLDASLPSDYLK              2          148,110,338
  NPAADAGSNNASKK              2           32,234,856
      IVLVDDSIVR              2           11,768,772
```
Specter currently requires the cluster-computing framework Apache Spark; a cloud framework and accompanying website will appear in the future. See ```SpecterUserGuide.pdf``` for detailed instructions on how to set up and use Specter. 


Owner

  • Name: Christian Panse
  • Login: cpanse
  • Kind: user
  • Location: 47N 008E
  • Company: Swiss federal institute of technology in Zurich

proteome informatics; ms comp; visualization; maps; code; reproducible research @hb9feb@fosstodon.org

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