Does this new version of LipiXplorer accepts .mgf files

[ricardo...@yahoo.com.br]

Hi all,

My question is: Does this new version of LipiXplorer accepts .mgf files?

I'm interested in tying to use deconvoluted data from MZMine/MSDial within LipidXPlorer for "database independent" compound annotation.

Thanks

[Dom's HomeStudio, Lakeside HomeRecording]

Dear Ricardo,

In LipidXplorer 1.2.8.1 the import of txt file formats was switched off. Here, we focussed on performance issue in the import for mzML files as well as inserted filters multiple scans of a certain scan type in MS1 and MS2. Besides that not much has changed. You should stay on LipidXplorer 1.2.7 for reding in peak lists in the described formats.

best wishes and sorry for the late reply.

best Dominik

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[ricardo...@yahoo.com.br]

Ok, let me mention this: I did try to convert my .mgf file into .mzML (both attached here: https://www.dropbox.com/sh/y9bg3bepojwuruj/AAAHeBfiYfM1NkTC5TnoO1T6a?dl=0), but when I try to run it into LipidXplorer I get "the polarity is given neither as '-' nor as '+'. It is "... is there a way to fix this? ... I would be very nice to be able to run this in LipidXplorer make use of dozens of .mfql files I made for Natural Product dereplication.

PS: if I could run it. I'll be able to directly import LipidXplorer annotations into Molecular Networks to increase a lot my compound identification rates..

Many Thanks

[Dom's HomeStudio, Lakeside HomeRecording]

Dear Ricardo,

as explained before. We have only improved the import of mzML files with LX 1.2.8. Until now most users are used to import this type of files into LX. With LX 1.2.7 you still keep the full functionality,

LX is expecting by default a declaration of ionization mode either positive or negative. Also in the import for CSV / dta files this has to be declared. At this time we dont have the resources for additional import modules and/or adjustments. I can have a look into the conversion if you share files with me. However, the limitation of correctly declaring an ionization mode can not be avoided.

I myself use the txt import options for import of files of bruker FTMS spectra and it works fine.

best Dominik

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