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Marcelo D. Polêto

@mdpoleto.bsky.social
743 followers 425 following 281 posts

Computational Biochemist @ Universidade Federal de Viçosa (UFV) | Molecular simulations | Drude Polarizable FF | Enzyme engineering | Sustainability ♻️. Trying to grow my own agroforestry system 🌳🫒. he/him 🇧🇷 mdpoleto.github.io

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Reposted by Marcelo D. Polêto
Joe Greener @jgreener64.bsky.social · 30/09/2026
I gave a teaching lecture on molecular dynamics this morning. If anyone is interested in the slides they are at docs.google.com/presentation....
docs.google.com
LJC Summer School lecture
Molecular Dynamics Joe Greener MRC Laboratory of Molecular Biology LJC Summer School - 30/09/26
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David K Smith @professor-dave.bsky.social · 28/09/2026
As part of our decolonisation work @chemistryatyork.bsky.social, I have created 25 touchstone global chemical stories, each linked to a key point in our curriculum. 13 'Chemical Histories' and 12 'Scientists'. Over the coming weeks, I will share some as 'quote posts' of this, so they can be found.
DECOLONISING CHEMISTRY

PACKAGE OF MATERIALS FOR YORK CHEMISTRY UNDERGRADUATES

Global Chemical Histories

Contents

FIREWORKS and EXPLOSIVES	2
INDIGO	7
MAKING DYES STICK – MORDANTS	11
CEMENT – BUILDING CIVILISATIONS	15
PERFUMERY	18
MINERAL ACIDS (and ‘ALKALI’)	22
RUBBER	27
PAPERMAKING	31
ANALYTICAL CHEMISTRY – STANDARDS and UNITS	34
GOLD PLATING	36
SURFACTANTS IN CLEANING	39
LUBRICATION TECHNOLOGY	41
THE HISTORY OF MEDICINE	43

DECOLONISING CHEMISTRY

PACKAGE OF MATERIALS FOR YORK CHEMISTRY UNDERGRADUATES

Global Scientists

Contents

GEORGE WASHINGTON CARVER	2
HAR GOBIND KHORANA	7
TU YOUYOU	11
C. V. RAMAN	14
ALICE BALL	19
AP DE SILVA	23
TAKAMINE JŌKICHI	27
BERTRAM OLIVER FRASER-REID	32
MARIE MAYNARD DALY	35
OSAMU SHIMOMURA	39
PRAFULLA CHANDRA RAY	42
MARY ELLIOTT HILL (& CARL McCLELLAN HILL)	46
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Sergey Ovchinnikov @sokrypton.org · 14/09/2026
Finally a more intuitaive way to learn pLDDT/pAE? 😎 sokrypton.github.io/protein_figh... (Character idea from @hannes-stark.bsky.social & Alex Waldherr)
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Marcelo D. Polêto @mdpoleto.bsky.social · 14/09/2026
This is, hands down, the best pedagogical resource to teach protein denaturation. sokrypton.github.io/protein_figh... Absolutely amazing, @sokrypton.org 👏👏👏
sokrypton.github.io
Protein Fighter
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Stephen Moran. @moranstephen1000.bsky.social · 30/08/2026
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Jo Wolff @jowolff.bsky.social · 26/08/2026
Grete Hermann (1901-1984), brilliant philosopher of maths and quantum mechanics and first student of Emily Noether. Hermann was co-founder of the journal Ratio, and turned to political philosophy later in her career, writing in 1947:
Whoever lives in the Third Reich or otherwise comes to terms with it, but isolates themselves from the political events around them in order to occupy themselves with other, in themselves beautiful and worthy subjects, is lending their name and their work to this system. There is no neutrality towards the legal and cultural decline in public life. Whoever does not oppose it is complicit in it. Whatever beautiful and good things they may create otherwise are devalued by this participation in the social injustice with which it is burdened.
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Kresten Lindorff-Larsen @lindorfflarsen.bsky.social · 25/08/2026
Predicting RNA structure is hard, and predicting RNA dynamics is even harder We combined extensive NMR data with MD simulations to study the dynamics of RNA tetraloops By projecting onto the universe of tetraloop structures, we show how NMR+MD captures structures not seen by prediction methods
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Alma Preta Jornalismo @alma-preta.bsky.social · 24/08/2026
Candidata da UP à Presidência apresenta à Alma Preta propostas para trabalho e renda e critica conciliação com setores econômicos almapreta.com.br/sessao/polit...
almapreta.com.br
'Falar de soberania e não fazer reforma agrária não faz sentido', diz Samara Martins
Em entrevista, Samara Martins fala sobre socialismo, trabalho, reforma agrária e confronto com setores econômicos nas eleições de 2026.
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Erahsto Felício @erahsfeliz.bsky.social · 22/08/2026
Coisas para não ter medo: 1. Papel 2. Cerca 3. Burguesia
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Atila Iamarino @atila.bsky.social · 19/08/2026
Tem um pessoal dolorido com o fim do vídeo de hoje. Mas a Dilma tinha razão.
youtu.be
O Fim da Globalização
YouTube video by Atila Iamarino
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Sergey Ovchinnikov @sokrypton.org · 15/08/2026
getting close to recreating Jane Richardson's style 😎
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FX Coudert @nanoporous.net · 30/07/2026
After 8 years as an editor for Communications Chemistry @commschem.nature.com, I am retiring today. It's been great seeing the journal grow and evolve since its launch in 2018, and I absolutely recommend it as a venue for publishing your work! Serious journal, serious team, loved working with them.
static.klipy.com
8th Birthday Eighth Birthday
ALT: 8th Birthday Eighth Birthday
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Kay Severin @kay-severin.bsky.social · 13/08/2026
Faculty position in our institute @EPFL: www.epfl.ch/about/workin...
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Kelly @broadwaybabyto.bsky.social · 09/08/2026
Leaked video from an ICE camp details people suffering from tuberculosis, a never ending “flu” & conjunctivitis. ICE enforcement is a mass disabling event. These are concentration camps. They’re a breeding ground for disease which will lead to preventable suffering, disability and death.
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noam @noamchompers.bsky.social · 08/08/2026
many professors are calling it 'the least surprising result of all time'
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Conexão Planeta @conexaoplaneta.bsky.social · 04/08/2026
Projeto tem ações planejadas para todos os #biomas do país. Um dos objetivos é a geração de benefícios diretos a 150 mil pessoas, das quais pelo menos 35% serão #mulheres
conexaoplaneta.com.br
Iniciativa de organizações ambientais irá restaurar 600 mil hectares de vegetação nativa no Brasil
Além da recuperação, o projeto Restaura Biomas prevê a promoção de práticas sustentáveis em 1,2 milhão de hectares, redução do equivalente a 34 milhões de toneladas de dióxido de carbono (CO₂e) e gera...
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Adriana @adrir.bsky.social · 01/08/2026
É assim na fila sopa, as pessoas chegam com suas panelinhas vazias e recebem a sopa e o pão, essa foi a fila de ontem Mas a sopa de hoje depende de ajuda que ainda vai chegar🥹 Nenhuma ação solidária se mantém sem ajuda e essa nao é diferente. Ajude urgente 🙏 Pix adriana.rc.drikaa@gmail.com
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Marcelo D. Polêto @mdpoleto.bsky.social · 31/07/2026
It is unbelievably satisfying to see concrete data backing up a feeling about LLMs and the "no stopping AI train".
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Kresten Lindorff-Larsen @lindorfflarsen.bsky.social · 23/06/2026
Come join the new Novo Nordisk Foundation Center for Protein Design as a group leader Cool science in a great scientific environment in wonderful and very family friendly Copenhagen There are two positions that can either be at TT assistant or associate prof level employment.ku.dk/tenure-track...
employment.ku.dk
Tenure-track Assistant Professor or Associate Professor of De novo Protein Design
The Novo Nordisk Foundation Center for Protein Design at the University of Copenhagen seeks to appoint two new group leaders in de novo protein design from 1 February 2027 or as soon as possible thereafter. These positions will be at the Assistant or Associate Professor level and associated with the Department of Biology (Faculty of Science) or the Department of Drug Design and Pharmacology (Faculty of Health and Medical Sciences).
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Sarah Shay @sarahshay.com · 14/06/2026
My biggest editing client has officially replaced me with an LLM, meaning I am now functionally unemployed. If any of you need a proofreader or copy editor and value having a human being who can tell right from wrong doing the job, let me know?
sarahshay.com
Copy Editing and Proofreading – Sarah Shay
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𝓒𝓵𝓪𝓻𝓲𝓼𝓼𝓪 𝓟𝓪𝓲𝓿𝓪 🦢✨ @clarissapaiva.bsky.social · 10/06/2026
Lembrando que tem TELEFONE pra ligar, WhatsApp e e-mail e se vc tiver animado pode até enviar cartas Gabinete: Senado Federal Anexo 2 Ala Affonso Arinos Gabinete 10 Telefones: (61) 3303-6717 / 6720 E-mail: sen.davialcolumbre@senado.leg.br
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Kit Yates @kityates.bsky.social · 10/06/2026
Can only assume the The Royal Society, by its inaction, is condoning the actions in Belfast incited by Elon Musk (one of their fellows). Why will the UK's premier Scientific Institution not stand up for itself and for its values?
telegraph.co.uk
Belfast attack live: Labour accuses Musk of fuelling riots
Labour has accused Elon Musk of fuelling protests in Belfast, which broke out after a Sudanese asylum seeker was charged with attempted murder.
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Marcelo D. Polêto @mdpoleto.bsky.social · 08/06/2026
Alright Internet, I need advice. As a jr PI starting my own research group on #compchem, I want to write a "Lab Guide" to define what students should expect from me, and what I expect from them. The idea is to structure and materialize the implicit and unspoken "lab rules" Suggestions? #chemsky
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Marcelo D. Polêto @mdpoleto.bsky.social · 06/06/2026
Super important and global phenomenon. If anything, offloading the exercise of thinking to algorithms is probably the way machines enslave humanity.
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Erahsto Felício @erahsfeliz.bsky.social · 04/06/2026
Pegar esse fundamento aqui
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Marcelo D. Polêto @mdpoleto.bsky.social · 02/06/2026
"Comer macarrão instantâneo é 400x mais barato do que refeição balanceada e saudável", diz CEO da Nissin Lamen. Coisa ridícula...
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Alexandrova Lab @alexandrovalab.bsky.social · 23/05/2026
👀 Out now in @chemicalscience.rsc.org! With @shafaatlab.bsky.social, we study electronic structure and magnetic coupling in a protein model of CODH, revealing covalency changes across states of the Ni–Fe–S cluster: 👉 doi.org/10.1039/D6SC00023A #compchem #chemsky #compchemsky @uclacb.bsky.social
doi.org
A protein-based model of carbon monoxide dehydrogenase exhibits tunable covalency across cluster oxidation and ligand-bound states
The nickel-containing carbon monoxide dehydrogenase (CODH) uses a unique heterometallic [NiFe4S4] cluster active site, called the C-cluster, to catalyze the reversible reduction of carbon dioxide (CO2...
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MDAnalysis @mdanalysis.bsky.social · 01/05/2026
Congratulations to all three of the #GSoC contributors who were accepted to work with MDAnalysis and @westpasoftware.bsky.social mentors this year! 👀 🔜 🤩 Keep an eye out for a blog post coming soon where you can learn more about each of the contributors and their projects.
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Jan H. Jensen @janhjensen.bsky.social · 20/04/2026
Curated digital datasets of acid dissociation constants in dipolar aprotic solvents | ChemRxiv #compchem chemrxiv.org/doi/full/10....
chemrxiv.org
Curated digital datasets of acid dissociation constants in dipolar aprotic solvents | ChemRxiv
The acid dissociation constant is a key thermodynamic property, but large compilations of highly trustworthy data in non-aqueous solvents are scarce. This work presents a newly-digitized compilation, with corrections, of pK a data published originally by ...
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Marcelo D. Polêto @mdpoleto.bsky.social · 18/04/2026
Ok, but.... Δ‡G feels wrong 😅
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Marcelo D. Polêto @mdpoleto.bsky.social · 16/04/2026
Well, it's official so I can finally say it: I'm joining the Dept. of Biochemistry and Molecular Biology at my alma mater, Universidade Federal de Viçosa❤️ I'm truly happy and honored to be part of UFV again, now empowering the next generation of Brazilian biochemists 🇧🇷👨‍🔬 More info soon! #chemsky
Picture of the campus Viçosa of the Universidade Federal de Viçosa
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Marcelo D. Polêto @mdpoleto.bsky.social · 13/04/2026
Yet another reason why the current state of AI is slowly killing me: I can't access a single paper now without proving that I'm not a LLM gathering references for their hallucinations 😩 #chemsky
A screenshot of a CAPTCHA to access ACS journals.
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Nabil Bonduki @nabilbonduki.bsky.social · 09/04/2026
Hoje o UOL expôs exatamente o que venho denunciando há meses em todas as sessões da CPI: a Prefeitura NÃO tem o mínimo controle sobre as unidades de Habitação de Interesse Social que está incentivando. +
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Paul Eric @pauleric70.bsky.social · 04/04/2026
Israel is blowing up entire civilian homes in Naqoura, South Lebanon right now. Civilian homes. No military target. No justification. Just pure terror and destruction. This is a war crime in broad daylight. And the world watches in silence. 🤬🤬🤬🤬🤬🤬🤬🤬🤬🇮🇱♾️
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Joe Sondow @joesondow.bsky.social · 05/04/2026
Heads up GitHub users. You have less than a month left to opt out of "Allow GitHub to use my data for AI model training". "On April 24 we'll start using GitHub Copilot interaction data for AI model training unless you opt out." github.com/settings/cop...
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hollensteinlab.bsky.social @hollensteinlab.bsky.social · 03/04/2026
Very happy to share our pre-print on the enzymatic synthesis of DNA equipped with short oligosaccharides. Great collaboration with Marc Delarue and Laurence Mulard. Congrats to Maria Dalla Pozza and Marc! chemrxiv.org/doi/full/10.... @pasteur.fr @ipdbsc.bsky.social @cnrs.fr
chemrxiv.org
Enzymatic synthesis of glyco-DNA equipped with oligosaccharides and charged monosaccharides | ChemRxiv
The therapeutic and biotechnological utility of synthetic oligonucleotides is constrained by the limited chemical diversity of canonical nucleotides and their susceptibility to nuclease degradation. Inspired by the hypermodified genomes of bacteriophages, ...
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Roland Dunbrack 🏳️‍🌈 @rolanddunbrack.bsky.social · 05/04/2026
Here is the talk I gave @asbmb.bsky.social for the DeLano Award in Computational Biosciences in March 2026. www.youtube.com/watch?v=g0Gv...
youtube.com
Roland Dunbrack: Structural bioinformatics and protein structure prediction at multiple scales
YouTube video by American Society for Biochemistry and Molecular Biology (ASBMB)
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Avogadro Project @avogadro.cc · 05/04/2026
Sometimes you just want to see a molecule move. Run a quick MD simulation without leaving Avogadro — no scripts, no setup. The new auto-optimize tool includes a dynamics mode. Watch it move in real time. Great for teaching. Great for intuition. Just fun to watch. #openscience #compchem #opensource
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Avogadro Project @avogadro.cc · 04/04/2026
Visualize molecular orbitals and electron density easily with Avogadro 2.0. Volumetric rendering of orbitals, plus van der Waals, solvent-accessible and solvent-excluded surfaces for biomolecular work. See the chemistry, not just the atoms. #compchem #openscience #opensource
Volumetric rendering of the highest occupied molecular orbital (HOMO) of pentacene. Yellow and blue indicate opposite phases of the wavefunction, with color intensity indicating the magnitude of the wavefunctionVan der Waals molecular surface of coronene, with overlaid electrostatic potential map: red = more negative charge, blue = more positive chargeRendering of the highest occupied molecular orbital (HOMO) of pyrazineRendering of a graphene supercell with solvent-accessible surface (green) indicating a defect site with a hydrogen molecule and overlay of electrostatic potential (blue = more positive, red = more negative)
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Creissonino is a Dead Man @creissonino.bsky.social · 03/04/2026
Acredito que as grandes empresas nos tiram a dignidade e a independência e que estes sistemas devem ser destruídos, queimados ou nivelados pela força que se fizer necessária. Mas esta é só a opinião de um ursinho. (sim, acredito no mesmo que o Catatau)
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Carol Almeida 🇵🇸 @caroltypes.bsky.social · 03/04/2026
Vou traduzir a postagem abaixo e vs inferem sobre o que tá acontecendo: Tropas israelenses no Líbano vão procurar por muçulmanos escondidos nos sótãos de lares cristãos e druzos (árabes que não são muçulmanos, e têm cidadania israelense) Procurar por muçulmanos nos SÓTÃOS de casas. Lembra algo?
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Rosetta Commons @rosettacommons.bsky.social · 02/04/2026
Three RFdiffusion3 (RFD3) tutorials are now available. These tutorials walk you through how to use RFD3 to generate structures for: protein-protein interface design, enzyme design, and nucleic acid binder design, and can be expanded to other areas of interest. Check them out @ zurl.co/og3XK
There is an image of green, purple, and teal protein spirals on a black background with the announcement of the new RDF3 tutoritals being available. Additional text states “Whether you’re just starting with RFdiffusion3 (RDF3) or looking ot refine your design workflows, these three new tutorials for RFD3 guide you step-by-step through creating new protein structures for your design projects. Learn more at rosettacommons.org/news.” The Rosetta Commons logo is in the upper right corner. The background is a light teal with some hexagons in the corners.
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Avogadro Project @avogadro.cc · 01/04/2026
No fooling, Avogadro 2.0.0 is finally here! Rebuilt from the ground up: fast modern rendering, improved stability, designed for the next generation of molecular, biomolecule, and materials research & education. 🧪 ⚗️ avogadro.cc/install/ discuss.avogadro.cc #opensource #openscience #compchem
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Ariane Nunes Alves @anunesalves.bsky.social · 31/03/2026
Happy to share the review that @apoorvam.bsky.social, Vanessa and I wrote about recent trends in modeling and simulation of biological phenomena in crowded and cell-like environments! I really like this topic, for me this is the future of #compchem. arxiv.org/abs/2603.26974
arxiv.org
Recent advances in modeling and simulation of biological phenomena in crowded and cellular environments
While experiments and computer simulations to study biological phenomena are usually performed in diluted in vitro conditions, such phenomena happen inside the cellular cytoplasm, an environment dense...
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Kresten Lindorff-Larsen @lindorfflarsen.bsky.social · 29/03/2026
“The glass must be absolutely transparent for one to perceive the mud at the bottom” 💪 doi.org/10.1063/5.03...
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gabriel @arrobagaf.bsky.social · 28/03/2026
marcelinho lendo a redação do menino da fuvest
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Gonzalo Parra @gonzaparra.bsky.social · 27/03/2026
🚨 New postdoc opening in my group at @bsc-cns.bsky.social! We’re looking for someone excited about protein evolution, local frustration, ML, & large-scale computational biophysics 🧬 Access to world-class HPC (MareNostrum) + great team! www.bsc.es/join-us/job-...
bsc.es
158_26_LS_ESB_R2
Reference: 158_26_LS_ESB_R2 Job title: Postdoctoral Researcher – Protein Computational Biophysics (R2) About BSC The Barcelona Supercomputing Center - Centro N
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C&EN (Chemical & Engineering News) @cenmag.bsky.social · 13/03/2026
If people show confidence in the value of green chemistry, it will empower our students and colleagues to do the same: cen.acs.org/environment/... #greenchemistry #chemsky 🧪
Do you believe in green chemistry?
by Juliana Vidal and Amy Cannon, special to C&EN.
This three-panel image is tinted green and shows a person wearing a lab coat and holding a flask containing a dark liquid.
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Andrew D Wilson @adw.bsky.social · 26/03/2026
Wikipedia now has higher standards than all universities
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Mariko Bennett @nachoriko.bsky.social · 24/03/2026
I defended my PhD 10 years ago today. That was the least remarkable thing that happened that day. Sharing something I wrote about it last year. Since then "the horrors persist but so do we." And with dignity.
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