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Osvaldo Burastero

@osvalb.bsky.social
871 followers 950 following 35 posts

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Osvaldo Burastero @osvalb.bsky.social · 10/06/2026
Moreover, the errors of the fitted parameters can be easily estimated through leave-one-out or profile likelihood analysis (thank you reviewer #3) 😁
Screenshot of CheMelt showing a popup asking the user which method to use to calculate errors.
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Osvaldo Burastero @osvalb.bsky.social · 10/06/2026
And fitted (both 330 nm and 350 nm) with a global model to obtain estimates of ΔCp, ΔHm, Tm and the m-value.
Fitted curves provided by Hamborg et al., with CheMelt global model. Global slopes and global intercepts with exponential baselinesScreenshot of CheMelt showing fitted parameters of a global fitting.
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Osvaldo Burastero @osvalb.bsky.social · 10/06/2026
CheMelt expands the work done by Hamborg et al., (2020). Global analysis of protein stability by temperature and chemical denaturation. Analytical biochemistry. For example, they kindly provide an unfolding dataset of the ACBP protein which can be imported in CheMelt:
Unfolding dataset provided by Hamborg et al., 2020. The unfolding curves were monitored at 350 nm and 330 nm.
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Osvaldo Burastero @osvalb.bsky.social · 10/06/2026
Do you want to study the stability of a designed protein that doesn't unfold below 90 ºC 🔥? Combine a denaturant and temperature and then analyse the results with our newest tool: CheMelt 🧪 Online: - spc.embl-hamburg.de/app/chemelt As Docker image (faster): - hub.docker.com/r/emblspc/ch...
Abstract illustration showing several thermal unfolding curves at different denaturant concentrations
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Osvaldo Burastero @osvalb.bsky.social · 30/03/2026
Interested in protein biophysics?🧪 Sign up for the @springernature.com webinar (08/04) where we will present the MOSBRI project outcomes @mosbri.bsky.social, including the eSPC platform (spc.embl-hamburg.de) and the Molecular Biophysics Database (mbdb-data.org) 🙌 Info here: tinyurl.com/rdfsp4nv
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Osvaldo Burastero @osvalb.bsky.social · 19/02/2026
Do you have to create a scientific poster? 🧪 I have created a basic Figma template for it. Hope it helps 👐: github.com/osvalB/figma...
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Osvaldo Burastero @osvalb.bsky.social · 13/08/2025
Do you want to analyze mass photometry (MP) count data with Python scripts? Try pyPhotoMol, a package to process, fit, and visualize the MP data 👨‍💻 github.com/osvalB/pypho... pyPhotoMol is derived from PhotoMol, our web tool for MP: spc.embl-hamburg.de/app/photoMol #massphotometry #Python #code
Simulated mass photometry results showing count distributions at a constant concentration of A (150 kDa) and seven different concentrations of B (30 kDa). B free is under the limit of detection (40 kDa). A and B interact with an equilibrium dissociation constant (Kd) of 1 nM.Screenshot of the pyPhotoMol package repository (https://github.com/osvalB/pyphotomol)
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Osvaldo Burastero @osvalb.bsky.social · 14/02/2025
Interested in antimicrobial resistance and drug discovery? Attend the talk of my colleague and partner Tania Szal 😊 Monday 17th at 8:30. Platform: protein-small molecule interactions I #BPS2025
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Osvaldo Burastero @osvalb.bsky.social · 14/02/2025
Looking forward to making new connections at #BPS2025👨 Meet me at poster B38 on Tuesday 18 Feb 13:45. Session "protein stability folding and chaperones"
espc poster details BPS conference banner
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Osvaldo Burastero @osvalb.bsky.social · 11/02/2025
Just finished a science poster (in Figma) and wanted to share the template I used! 🎨 Hope it's useful: github.com/osvalB/figma...
Poster template done in Figma
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Osvaldo Burastero @osvalb.bsky.social · 31/01/2025
The estimated Kd (micromolar) is 1.3, and we also provide the asymmetric confidence interval: [0.5 - 3.1] (link.springer.com/article/10.1...) The reported Kd by the authors was 1.2. 6. Extra: I scaled the plot to start around 0.
Points: measured MST signal. Line: Fitted curved based on the estimated Kd of 1.3 micromolar.
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Osvaldo Burastero @osvalb.bsky.social · 31/01/2025
4. Go to the '2. Fitting' section. Inside the 'Advanced settings', set the Kd max value to 5 micromolar (to help the fitting algorithm 😄😬 ). 5. Press on 'Run fitting' and voila!
Screenshot of ThermoAffinity showing that the Kd upper bound (for the fitting) is 5 micromolar.
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Osvaldo Burastero @osvalb.bsky.social · 31/01/2025
2. Import the file into our tool ThermoAffinity (spc.embl-hamburg.de/app/thermoAf...) 3. Set the units to 'Nanomolar' and the hot region between 14 - 20 seconds (based on what the authors reported)
Screenshot of ThermoAffinity showing that the selected units are 'Nanomolar', and that the hot region interval goes from 14 to 20 seconds.Microscale thermophoresis traces of the entry https://mbdb-data.org/mst/5s81t-w6s49
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Osvaldo Burastero @osvalb.bsky.social · 29/01/2025
Are you working with circular dichroism (CD)? Check out the latest update to our ChiraKit tool, now with 10 tutorials to get you started! 🚀 Try it here: spc.embl-hamburg.de/app/chirakit
An abstract representation of what happens during a circular dichroism measurement. Left- and right-circularly polarized light passes through the sample. One of the components is more absorbed.
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Osvaldo Burastero @osvalb.bsky.social · 18/11/2024
Just out! 🥳🥳 Great work done at the @spcembl.bsky.social to understand clathrin-mediated endocytosis. We investigated how clathrin and adaptor proteins interact in vitro and in vivo. Kudos to the 1st author @lucasdefelipe.bsky.social! www.nature.com/articles/s41... www.embl.org/news/science...
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