Leandro Martínez
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lmiq.bsky.social
Leandro Martínez
@lmiq.bsky.social
Computational chemist - http://m3g.iqm.unicamp.br
How Designed Liquids Are Revolutionizing Our Understanding of Proteins

cces.unicamp.br/how-designed...
June 11, 2025 at 7:18 PM
Reposted by Leandro Martínez
“Before Noether’s theorem, the principle of conservation of energy was shrouded in mystery,” the physicist and mathematician Feza Gürsey wrote in 1983. “… Noether’s simple and profound mathematical formulation did much to demystify physics.”
https://buff.ly/414iuVL
How Noether’s Theorem Revolutionized Physics | Quanta Magazine
Emmy Noether showed that fundamental physical laws are just a consequence of simple symmetries. A century later, her insights continue to shape physics.
buff.ly
February 16, 2025 at 5:23 PM
Reposted by Leandro Martínez
Qual o papel do cientista na sociedade?
Com Ronaldo Aloise Pilli, IQ Unicamp, e José Mário Martínez, IMECC da Unicamp. Pilli e Martínez são membros da Academia Brasileira de Ciências (ABC).
www.youtube.com/watch?v=lf_X...
cc @lmiq.bsky.social
Qual o papel do cientista na sociedade?
YouTube video by TV Unicamp
www.youtube.com
February 16, 2025 at 2:30 PM
Transfer free energies of native and denatured states of proteins to urea and TMAO are computed. The reweighed stability affects folding pathways. This work is possible by using minimum distance distribution functions and the ComplexMixtures.jl package. #compchem #chemsky #julialang
Osmolyte-Induced Structural and Thermodynamic Effects on the Protein Folding Landscape
Understanding how osmolytes influence protein folding is fundamental in biology and biotechnology. We developed a computational pipeline to investigate the structural and thermodynamic effects of osmolytes across the protein folding landscape: Using coarse-grained simulations to generate folding ensembles, we then employed atomistic simulations to explore each conformation in aqueous solutions of urea and TMAO. Minimum-distance distribution functions and the Kirkwood-Buff solvation theory provide unprecedented details on the solvation structures and thermodynamics. We studied two model proteins: the β-sheet SH3 domain and the helical B domain of protein A (BdpA). Urea stabilizes most denatured states, while TMAO destabilizes them. However, urea destabilizes partially denatured states of BdpA, which are only marginally affected by TMAO, demonstrating that osmolytes can selectively interfere with denaturation pathways. We show that urea-induced denaturation arises from strengthened non-specific interactions in unfolded states, leading to increased protein dehydration. Cosolvent effects on folding free energies match experimental data within 1 kcal/mol, validating force-fields and analysis methods. These findings provide a novel perspective on osmolyte-protein interplay, with implications for solvent and biomolecular design. ### Competing Interest Statement The authors have declared no competing interest.
www.biorxiv.org
February 9, 2025 at 10:55 AM
New research online: understanding cation hydrophobic effects on protein solvation. Using ComplexMixtures.jl #compchem #julialang

chemrxiv.org/engage/chemr...
Cation Hydrophobicity Effects on Protein Solvation in Aqueous Ionic Liquids
This study examines the influence of cation hydrophobicity on protein solvation in aqueous solutions of Ionic Liquids. Ubiquitin solvation structures and thermodynamics in systems with 1-ethyl-3-methy...
chemrxiv.org
January 31, 2025 at 12:10 AM
December 4, 2024 at 3:27 PM
New paper online. Here we use MD simulations and the ComplexMixtures.jl package to understand the relationship between solvation and activity of a glucosidase. #moleculardynamics #julialang
Molecular dynamics and solvation structures of the β-glucosidase from Humicola insolens (BGHI) in aqueous solutions containing glucose
The β-glucosidase enzyme is a glycosyl hydrolase that breaks down the β-1,4 linkage of cellobiose. It is inhibited by glucose at high concentrations d…
www.sciencedirect.com
November 30, 2024 at 12:45 AM
"Na prática, a legislação acaba com a moratória da soja, um acordo que proíbe, desde 2008, a compra de grãos de áreas desmatadas da Amazônia e que atinge principalmente as empresas que comercializam o grão (tradings) especialmente para o mercado externo."

agro.estadao.com.br/agropolitica...
Aprosoja MT comemora aprovação de projeto contra moratória da soja | Agro Estadão
Proposta impede a concessão de incentivos fiscais e terrenos públicos a empresas organizadas em acordos que restrinjam a competitividade do produto mato-grossense
agro.estadao.com.br
October 13, 2024 at 1:39 PM
Similar to what happens with minimum wage increases and distributive programs.
"Immigrants often increase employment among the native-born. Why? Because they spend much of their earnings where they live and work, helping create local jobs."

In other words, immigrants are people. They supply *and demand* labor. They demand *and supply* goods and services. Of course they do.
September 17, 2024 at 8:46 AM
Reposted by Leandro Martínez
Juíza condena cientistas por criticarem post que associava diabetes a parasitas

➡️ O duo NuncaVi1Cientista, formado pela bióloga Ana Bonassa (especialista no metabolismo do diabetes) e pela farmacêutica Laura Marise, terá de indenizar o autor da desinformação
September 10, 2024 at 4:27 PM
Sharing an interesting job opportunity:

Julio Hoffimann, ceo of Arpeggeo, is among the lead developers of the Julia framework for geospacial research github.com/JuliaGeo.
Geospatial Software Development at Arpeggeo®
Description We are seeking a highly skilled and motivated Software Engineer to join our team, focusing on the development of cutting-edge geospatial software solutions. The ideal candidate will have s...
discourse.julialang.org
September 9, 2024 at 11:26 AM
Reposted by Leandro Martínez
As inscrições em Introduction to Functional Programming estão abertas
github.com/adolfont/cae...
GitHub - adolfont/caes005-introduction-to-functional-programming: CAES005 - Introdução à Programação Funcional
CAES005 - Introdução à Programação Funcional. Contribute to adolfont/caes005-introduction-to-functional-programming development by creating an account on GitHub.
github.com
September 8, 2024 at 12:45 PM
I confess sometimes I have to code in Python.
September 7, 2024 at 1:00 PM
And suddenly my opinion that arxiv publications are the future begins to change. We might need, on the contrary, stricter peer review.
September 7, 2024 at 11:14 AM
Jabuticabeira em flor
September 7, 2024 at 10:35 AM
Notebook showing up Julia features for particle simulations. Units, error propagation, differentiability, and performance. Takes a bit to load because of some videos. With Pluto.jl. #julialang

m3g.github.io/2021_Fortran...
⚡ Pluto.jl ⚡
Pluto.jl notebooks
m3g.github.io
September 6, 2024 at 11:07 PM
Post-doctoral positions open in Molecular Dynamics Simulations at the University of Campinas (UNICAMP) - Brazil.

cces.unicamp.br/2024/09/02/p...

#compchem #moleculardynamics #Chemsky
Post-Doctoral positions: Molecular Dynamics Simulations – CCES Unicamp
cces.unicamp.br
September 3, 2024 at 12:25 PM