Witold Szymański

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199 Posts
Profile administered by Witold Szymański.
I am a staff scientist responsible for Mass Spectrometry part of our Institute for Translational Proteomics and the Core Facility for Proteomics at the Phillips University of Marburg, Germany.
websitehttps://www.graumannlab.science/
Let's try something new as well. Anyone interested, please follow me on Bluesky:
@proteomicsmarburg.bsky.social
@translational_proteomics @UCDProteomics You can do it in 1x PBS or 4% SDS/HEPES buffer, I prefer second.
@translational_proteomics @UCDProteomics Prepping plasma? I thought it is always ready to use ;-) Normally, we just dilute strongly (1:10 for human) and start the CAM process, followed by SP3 cleanup .
Found an old spectrum from 2011! :D
Most failed proteomics methods are things that sounded good on paper but something was fundamentally wrong or the technology was not capable. I have no idea how random enrichment of protein noise from plasma ever got off the ground. It sounds ridiculous on paper. Let's see if some nanoparticles with different surfaces can have a really rare peptide stick before the crap from albumin saturates everything. Maybe there are non-random patterns in the random binding. Time to go commercial…

New paper published with the involvement of our lab!

https://pubmed.ncbi.nlm.nih.gov/37607954/

Impaired Plakophilin-2 in obesity breaks cell cycle dynamics to breed adipocyte senescence - PubMed

Plakophilin-2 (PKP2) is a key component of desmosomes, which, when defective, is known to promote the fibro-fatty infiltration of heart muscle. Less attention has been given to its role in adipose tissue. We report here that levels of PKP2 steadily increase during fat cell differentiation, and are c …

PubMed
Ohh how I missed that! Gravel ride!
RT @DemichevLab: We have added DIA-NN 1.8.2 beta 25 to the QuantUMS preprint repository https://osf.io/q8kfc/?view_only=5e77d3c62563468280fd09265583dbbd. Inlcudes improved QuantUMS and some fixes. This version has quite a number of major improvements over 1.8.1, we will make an official github release once thoroughly tested https://osf.io/q8kfc/?view_only=5e77d3c62563468280fd09265583dbbd
QuantUMS benchmarks

Benchmarks of the QuantUMS algorithm for peptide and protein quantification from LC-MS proteomics data Hosted on the Open Science Framework

OSF

(RSS) (Proteom Res News) Confirmatory results! 0.1% formic acid IS a stupid buffer, particularly for single cells!: A few months ago, Battellino et al., dropped this bombshell little paper on the proteomics world that made me get up and start questioning everything. Their title was long but I called it "is using formic acid in your buffers stupid?" and that sort of summed it up. 

Caution! Disclaimers! Check with the persons who service… https://proteomicsnews.blogspot.com/2023/08/confirmatory-results-01-formic-acid-is.html?utm_source=dlvr.it&utm_medium=mastodon (/Proteom Res News) #proteomics

Confirmatory results! 0.1% formic acid IS a stupid buffer, particularly for single cells!

A few months ago, Battellino et al., dropped this bombshell little paper on the proteomics world that made me get up and start questioning e...

@proteomicsnews blog post | Confirmatory results! 0.1% formic acid IS a stupid buffer, particularly for single cells! | https://proteomicsnews.blogspot.com/2023/08/confirmatory-results-01-formic-acid-is.html #proteomics
Confirmatory results! 0.1% formic acid IS a stupid buffer, particularly for single cells!

A few months ago, Battellino et al., dropped this bombshell little paper on the proteomics world that made me get up and start questioning e...