Re: QQQ MRM data
Reply #2 –
Now I also have MRM data from AB-Sciex QQQ... Neither mzMine nor XCMS can read the file generated by msconvert, but seeMS shows the data as Ricca said. I do get another error from XCMS though:
Any ideas of how to read this data?
Each scan looks like this:
<chromatogram index="1" id="SRM SIC Q1=86.01 Q3=69 sample=1 period=1 experiment=1 transition=0" defaultArrayLength="380">
<cvParam cvRef="MS" accession="MS:1001473" name="selected reaction monitoring chromatogram" value=""/>
<userParam name="MS_dwell_time" value="0.029999999999999999" type="xs:float"/>
<precursor>
<isolationWindow>
<cvParam cvRef="MS" accession="MS:1000827" name="isolation window target m/z" value="86.01" unitCvRef="MS" unitAccession="MS:1000040" unitName="m/z"/>
</isolationWindow>
<activation>
<cvParam cvRef="MS" accession="MS:1000133" name="collision-induced dissociation" value=""/>
<cvParam cvRef="MS" accession="MS:1000045" name="collision energy" value="0.0" unitCvRef="UO" unitAccession="UO:0000266" unitName="electronvolt"/>
<userParam name="MS_declustering_potential" value="0" type="xs:float"/>
</activation>
</precursor>
<product>
<isolationWindow>
<cvParam cvRef="MS" accession="MS:1000827" name="isolation window target m/z" value="69.0" unitCvRef="MS" unitAccession="MS:1000040" unitName="m/z"/>
</isolationWindow>
</product>
<binaryDataArrayList count="2">
<binaryDataArray encodedLength="3236"><cvParam cvRef="MS" accession="MS:1000523" name="64-bit float" value=""/>
<cvParam cvRef="MS" accession="MS:1000574" name="zlib compression" value=""/>
<cvParam cvRef="MS" accession="MS:1000595" name="time array" value="" unitCvRef="UO" unitAccession="UO:0000031" unitName="minute"/>
<binary>..............................</binary>
</binaryDataArray><binaryDataArray encodedLength="1156">
<cvParam cvRef="MS" accession="MS:1000523" name="64-bit float" value=""/>
<cvParam cvRef="MS" accession="MS:1000574" name="zlib compression" value=""/>
<cvParam cvRef="MS" accession="MS:1000515" name="intensity array" value="" unitCvRef="MS" unitAccession="MS:1000131" unitName="number of detector counts"/>
<binary>......
</binary>
</binaryDataArray>
</binaryDataArrayList>
...
...
</chromatogram>