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Natalie Niemi

@nieminm.bsky.social
1.9K followers 1.6K following 182 posts

Assistant professor @WUSTLmed Biochemistry & Molecular Biophysics. Mitochondria, metabolism, and cell signaling. Mom of 2. Advocate for women in science. www.niemilab.com

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Reposted by Natalie Niemi
Dave Pagliarini @pagliarini-lab.bsky.social · 29/09/2026
Is phosphorylation broadly relevant to mitochondrial protein function? In work led by @aj-smith.bsky.social, we silenced 10 mito phosphatases, mapped dynamic sites, and revealed functional implications for import, catalysis, and morphology. www.biorxiv.org/content/10.6... # Mitochondria #HHMINews
biorxiv.org
Dynamic protein phosphorylation shapes mitochondrial catalysis, import, and architecture
Phosphorylation is a pervasive mitochondrial protein post-translational modification, yet the extent of its influence over mitochondrial functions remains unclear. To identify dynamic mitochondrial ph...
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Reposted by Natalie Niemi
Nature Structural & Molecular Biology @natsmb.nature.com · 30/09/2026
New online: A phosphoproteome atlas of human cell lines reveals the landscape of kinase activity
dlvr.it
A phosphoproteome atlas of human cell lines reveals the landscape of kinase activity
Nature Structural & Molecular Biology, Published online: 30 September 2026; doi:10.1038/s41594-026-01877-6Koenig et al. present a phosphoproteome atlas of 33 human cell lines covering >200,000 phosphosites, advancing cellular kinase activity scoring and drug sensitivity prediction, providing a resource for cell signaling insights and precision oncology.
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Nature @nature.com · 30/09/2026
Nature research paper: A design approach for bitopic kinase inhibitors go.nature.com/4yhFWgy
go.nature.com
A design approach for bitopic kinase inhibitors - Nature
Detailed analyses of ligand choice, linkage vector and linker length enabled the development of bitopic inhibitors of ABL1 and EGFR kinases, including an ABL1 inhibitor with enhanced activity against resistance mutations and reduced off-target toxicity.
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Reposted by Natalie Niemi
American Society for Cell Biology @ascbiology.bsky.social · 30/09/2026
From MBoC: Bacterial condensates may be an overlooked part of how cells organize themselves. A new Perspective explores this “bacterial dark matter” and how it could be harnessed to engineer cellular functions. www.molbiolcell.org/doi/10.1091/mbc…
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Reposted by Natalie Niemi
Mathilda Lennartz @mathilda95.bsky.social · 30/09/2026
UPDATE!: I am absolutely stoked that the second paper of my PhD is now out in @natcellbio.nature.com :D. We combined lipid imaging, STED microscopy, and mathematical modelling in a super cool team effort to quantify lipid partitioning inside clathrin-coated pits. www.nature.com/articles/s41....
nature.com
Quantification of lipid sorting during clathrin-mediated endocytosis - Nature Cell Biology
Lennartz et al. evaluate lipid enrichment in clathrin-coated pits and observe that the differential lipid partitioning into clathrin-coated pits is largely driven by the lipid asymmetry of the plasma ...
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 18/09/2026
Ubp3 mediates dynamic deubiquitination of mitochondria upon induction of mitophagy www.biorxiv.org/content/10.64898/20…
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Reposted by Natalie Niemi
Nick Burton @nickburton.bsky.social · 18/09/2026
Very excited to put out this new preprint from the lab that represents our 3rd paper now in the lab's move into the field of identifying bioactive molecules in bacteria using C. elegans and studying how they regulate animal physiology. Really excited about this space- www.biorxiv.org/content/10.6...
biorxiv.org
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Petra Levin @redrockcity.bsky.social · 19/09/2026
4 years (!) in the making, in this review Jade Wang and I detail the fundamental processes underlying growth, the cell autonomous nature of homeostatic control, and the contribution of stochasticity to both. TL;DR Bacteria are more like teenagers than you think. www.nature.com/articles/s41...
nature.com
Bacterial growth rate in populations and single cells - Nature Microbiology
In this Perspective, Levin and Wang give a brief history of bacterial growth rate and discuss how it is connected to nutrient availability and macromolecule synthesis, with a focus on (p)ppGpp as a ce...
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Nikhil Garg @nkgarg.bsky.social · 10/03/2025
*Please repost* @sjgreenwood.bsky.social and I just launched a new personalized feed (*please pin*) that we hope will become a "must use" for #academicsky. The feed shows posts about papers filtered by *your* follower network. It's become my default Bluesky experience bsky.app/profile/pape...
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Kevin A. Scott, PhD @sculpturatus.bsky.social · 17/09/2026
found at ucsf
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N End Rules @n-end-rules.bsky.social · 16/09/2026
We introduce a new transducer of oxygen sensing: Cys2-HYT1 @isamanrique.bsky.social @charlene-kunaka.bsky.social Susanna Ubeda Tomas & @gunjansharma88.bsky.social ma88.bsky.social lead work defining HYT1 contribution to root hypoxia tolerance. @natcomms.nature.com www.nature.com/articles/s41...
nature.com
Hierarchical regulation of oxygen-sensing through coupled transducers in Arabidopsis thaliana - Nature Communications
The PLANT CYSTEINE OXIDASE (PCO) N-degron pathway contributes to oxygen sensing in plants. Here the authors identify HYPOXIA TRANSDUCER1 (HYT1) as a substrate of PCO and show it forms a coherent feed-...
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Magnus Kjærgaard @proteinmagnus.bsky.social · 13/09/2026
How does linear motifs drive dephosphorylation - and does it matter where and how strong the motifs are? These are the question Evi answers in her brand new pre-print: www.biorxiv.org/content/10.6...
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Reposted by Natalie Niemi
Cell Reports @cp-cellreports.bsky.social · 12/09/2026
Succinate and its carrier Sfc1 mediate metabolic control of mitochondrial protein import by the TIM23 translocase
dlvr.it
Succinate and its carrier Sfc1 mediate metabolic control of mitochondrial protein import by the TIM23 translocase
Das et al. show that succinate regulates mitochondrial protein import through an interaction between Sfc1 (succinate-fumarate carrier) and the Tim23 translocase subunit. In the absence of succinate, Sfc1 associates with Tim23 and reduces protein import. Succinate promotes dissociation of the Sfc1-Tim23 complex, thereby enhancing TIM23 mediated protein translocation into mitochondria.
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Reposted by Natalie Niemi
Caroline Bartman @cbartman.bsky.social · 10/09/2026
Excited to share the first published paper from my lab! Postdoc Helen Jordan led this study on 1) how metabolites change differently in inflammation in tissues versus in cells in a dish and 2) the role of one of the most-increased metabolites, soluble sialic acid www.jbc.org/article/S002...
jbc.org
Metabolomics of in vivo inflammation identifies soluble sialic acid as a conserved myeloid-cell metabolite
During an immune response, metabolism changes dramatically. Metabolites are oxidized to power immune cell functions, serve as building blocks for proliferation, and act as effectors to regulate pathog...
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Reposted by Natalie Niemi
Michael Wagner @michiwagner4.bsky.social · 04/09/2026
Who knew ammonia-oxidizing archaea could be “flexitarians”? Our new study in Science Advances shows that #AOA living inside marine sponges can assimilate branched-chain amino acids, an unexpected talent that may even shape how they interact with their hosts 🧽🤝🦠 🎉 www.science.org/doi/10.1126/...
science.org
Branched-chain amino acid assimilation enables mixotrophy of ammonia-oxidizing archaeal sponge symbionts
Marine sponges and ammonia-oxidizing archaea (AOA) represent one of the earliest animal-microbe symbioses. AOA are considered metabolically constrained chemolithoautotrophs that remove nitrogenous was...
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Reposted by Natalie Niemi
bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 06/09/2026
Mitochondrial protein import couples proteostasis failure to mitochondrial permeabilization www.biorxiv.org/content/10.64898/20…
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Reposted by Natalie Niemi
Nick Stroustrup @nstroustrup.bsky.social · 05/09/2026
Did you know that the cells of old animals contain much less mRNA than the cells of young ones? Let me share with you some results from an ongoing project in the lab, where we are finding that a progressive depletion of total mRNA abundance is a crucial part of aging 1/22
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Reposted by Natalie Niemi
Chelsea Brown @chelseabrown.bsky.social · 01/09/2026
Delighted to share my first author paper on how the MIC10 protein complex generates curvature in mitochondrial crista out now in Science Advances!! 🥳🥳 www.science.org/doi/10.1126/... See below for a run through of why we were interested and what we found 👇
science.org
The molecular basis of mitochondrial crista formation by the MIC10 complex
Mitochondrial cristae are essential for respiration, yet the molecular basis of how the high curvature of these membrane folds is maintained remains unclear. Using structure prediction tools and multi...
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Reposted by Natalie Niemi
Nature Chemical Biology @natchembio.nature.com · 27/08/2026
A new paper reveals the mechanisms of topogenic sequence recognition in mitochondrial inner membrane complexes TIM23 and TIM22 www.nature.com/articles/s41...
nature.com
Topogenic sequence recognition at TIM complexes revealed by a stendomycin-bound structure - Nature Chemical Biology
The mitochondrial inner membrane complexes TIM23 and TIM22 mediate distinct protein topogenesis functions in polypeptide import. The authors reveal their mechanistic overlap in topogenic sequence reco...
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Natalie Niemi @nieminm.bsky.social · 27/08/2026
A couple of days late, but many congratulations to graduate student Youmian Yan for defending her thesis this week!! Dr. Yan gave an incredible presentation on her work on mitochondrial protein import. Well done and richly deserved. 🥳🎉
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 24/08/2026
Kinetic Control of Nuclear-encoded Mitochondrial mRNA Localization and Local Translation www.biorxiv.org/content/10.64898/20…
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Reposted by Natalie Niemi
Cell Reports @cp-cellreports.bsky.social · 23/08/2026
Organelle proteomics of human, neonatal pig, healthy and diabetic mouse islets
dlvr.it
Organelle proteomics of human, neonatal pig, healthy and diabetic mouse islets
Caliskan, Haas et al. present a cross-species subcellular proteomic atlas of pancreatic islets, revealing conserved organelle organization across human, pig, and mouse. The study uncovers disease-associated remodeling of vesicular trafficking, granule acidification machinery, and mitochondrial metabolism in a mouse model of type 2 diabetes.
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Reposted by Natalie Niemi
Nigel Goldenfeld @nigelgoldenfeld.bsky.social · 07/08/2026
What do the earliest organisms tell us about where life began on earth? This fantastic paper addresses this issue through analyses that expose early metabolism, & what the environment contributed to kick start it. Even if wrong it is worth reading for the clear introduction to metabolism.
science.org
Intermediate stages in the origin of metabolism at a phosphorylating hydrothermal vent
Enzymatic metabolism emerged from metal-catalyzed, aqueous reactions of H2, CO2, NH3 and phosphite at a hydrothermal vent.
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Reposted by Natalie Niemi
Alex Holehouse @alexholehouse.bsky.social · 21/08/2026
HUGE congrats to former lab member and all-round excellent human @jjalston.bsky.social for being awarded an ALSF Young Investigator Grant!!! 🥳 www.alexslemonade.org/where-money-...
alexslemonade.org
Engineering Peptides that Target Disordered Regions in PAX3-FOXO1–Positive Alveolar Rhabdomyosarcoma
Alveolar rhabdomyosarcoma is an aggressive childhood cancer, and many children with this disease carry a mutation that combines two different proteins, PAX3 and FOXO1, into one protein, PAX3-FOXO1. Th...
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Reposted by Natalie Niemi
Silvia Ramundo @sramundo.bsky.social · 19/08/2026
A stress response can be a great starting point for discovering new biology! By following genes regulated during the chloroplast unfolded protein response, we’re discovering novel factors involved in chloroplast homeostasis. Here’s the first one we characterized: www.pnas.org/doi/10.1073/...
pnas.org
VIA1 is a conserved regulator of thylakoid membrane integrity that acts through VIPP1 | PNAS
Thylakoid membranes are indispensable for oxygenic photosynthesis, yet the mechanisms that protect these membranes from photooxidative damage remai...
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Reposted by Natalie Niemi
Nature Structural & Molecular Biology @natsmb.nature.com · 19/08/2026
New online: Ion transport as a determinant of membrane fusion and fission
dlvr.it
Ion transport as a determinant of membrane fusion and fission
Nature Structural & Molecular Biology, Published online: 19 August 2026; doi:10.1038/s41594-026-01860-1In this Review, the authors present the mechanisms at the interplay between ion transport and membrane fusion and fission in the endosomal system and beyond.
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Reposted by Natalie Niemi
Chenxin Li, PhD @chenxinli2.bsky.social · 19/08/2026
The in vitro fertilized rice zygote contain mitochondria from both gametes, but the paternal mitochondria were eliminated from the zygote, to the point that paternal mitochondrial SNP markers were undetectable by sequencing. #PlantScience From: academic.oup.com/plphys/advan...
academic.oup.com
Monitoring the fate of paternal mitochondria and their elimination in rice zygotes
Abstract. Mitochondria are preferentially transmitted from the maternal plant in most angiosperms, including rice, and paternal mitochondria are generally
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Reposted by Natalie Niemi
bioRxiv Biochemistry @biorxiv-biochem.bsky.social · 17/08/2026
Presequences of non-imported mitochondrial proteins serve as quality control elements in the cytosol www.biorxiv.org/content/10.64898/20…
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Reposted by Natalie Niemi
Journal of Clinical Investigation @jci.org · 16/08/2026
ICYMI💫: Revealing a vulnerability in AML: doi.org/10.1172/JCI1... Tcheng et al. @pmresearch-uhn.bsky.social discover AML cells upregulate mitochondrial protein import & rely more on the mitochondrial protease LONP1 to maintain mitochondrial protein solubility compared to normal hematopoietic cells
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Brandon Faubert @faubert.bsky.social · 12/08/2026
Come join our week-long course on stable isotope tracing! Great for learning and networking in the wonderful city of Nashville. (Line dancing/bull riding optional, but encouraged)
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cryoEM papers @cryoempapers.bsky.social · 11/08/2026
Structural basis for the selective inhibition of the PI3KC3-C2 complex by Rubicon in endolysosome maturation and mitophagy www.biorxiv.org/content/10.64898/2026.08.07.743589v1 #cryoEM
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The bumbling biochemist (Bri Bibel) @bumblingbiochemist.bsky.social · 10/08/2026
One of the most important things you can do to be a successful scientist is install and use a reference manager! I use Zotero and made a guide to help my students navigate it. Thought I'd share here as well. Hope it helps! youtu.be/9ViP3DU7Xvk
youtu.be
Using the reference management tool Zotero
YouTube video by the bumbling biochemist
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Lempradl Lab @lempradllab.bsky.social · 07/08/2026
Scientific careers are rarely linear, and mine is a good example. I am grateful to @natmetabolism.nature.com for publishing this series and making space for the many different paths, timelines and ways to build a scientific career. rdcu.be/fysBT #Drosophila #CareerPathways #WomenInSTEM #ScienceSky
rdcu.be
Career pathways, part 20
Nature Metabolism - Academic careers are shaped by scientific discovery, professional networks, mentorship and the challenges of balancing research with personal and professional responsibilities....
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Cell Biology J-Club @cellclub.bsky.social · 06/08/2026
A molecular switch for coordinating kinesin and dynein transport of mitochondrial cargo | Science www.science.org/doi/10.1126/...
science.org
A molecular switch for coordinating kinesin and dynein transport of mitochondrial cargo
The cellular distribution of mitochondria in response to stress and local energy needs is governed by the relative activities of the microtubule-based molecular motors kinesin and dynein. The mechanis...
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Reposted by Natalie Niemi
Jeremy Baskin @jeremybaskin.bsky.social · 06/08/2026
Thrilled to share our new work, co-developed w/Adrian Salic's lab: bioorthogonal probes for labeling PE, a multifunctional membrane lipid and source of important protein modifications. Congrats to Yuan-Ting Cho, Brittany White-Mathieu, Jade Xia, & Cindy Jao! onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Bioorthogonal Tools for Ethanolamine Lipids and Protein Conjugates
An alkyne-tagged ethanolamine analog (AlkEA) enables bioorthogonal, metabolic labeling of endogenous phosphatidylethanolamine (PE) and its protein modifications. AlkEA is incorporated into PE via the...
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Abby Buchwalter @abbybuch.bsky.social · 06/08/2026
We are looking to hire a technician to join the team. This project focuses on the nuclear lamina, a cellular structure that protects and organizes the genome. Will build skills in genetic screening, genomics, and stem cell culture. Please share, please apply! aprecruit.ucsf.edu/JPF06185
aprecruit.ucsf.edu
Junior Specialist, Buchwalter Laboratory, Cardiovascular Research Institute
University of California, San Francisco is hiring. Apply now!
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Wyoming Wormboy @wyomingwormboy.bsky.social · 03/08/2026
With most 1st-year PhD students starting graduate programs this month, it seemed like a good time to address the most important dilemma faced by many incoming PhD students—how to choose rotation labs. Although perhaps obvious to those with experience, many of the key factors are often overlooked.
helpimascientist.com
Choosing rotations and a dissertation lab - Help, I'm a Scientist!
By David Fay Choosing a lab in which to carry out your PhD is admittedly one of the more important decisions you’ll make in your early scientific career. But it’s important to have some perspective. F...
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Magnus Kjærgaard @proteinmagnus.bsky.social · 03/08/2026
Why do intrinsically disordered proteins behave so weirdly during SDS-PAGE? This is the question we aim to answer in our recent paper: onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Sequence determinants of the hypomobility of intrinsically disordered proteins in <fc>SDS</fc>‐<fc>PAGE</fc>
Proteins with intrinsically disordered regions (IDRs) migrate at a higher apparent molecular weight in sodium dodecyl sulfate (SDS)-polyacrylamide gel electrophoresis, complicating their analysis and...
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Natalie Niemi @nieminm.bsky.social · 02/08/2026
New preprint from the lab, co-led by Youmian Yan and @lianjiejerrywei.bsky.social! 🧵 at some point in the near future, but until then, check out our work uncovering mechanisms allowing the dual targeting of mitochondrial proteins using our favorite, PPTC7, as a case study.
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Alex Holehouse @alexholehouse.bsky.social · 29/07/2026
Huge congrats to the many authors who over MANY years worked on this (but especially @karaehunt.bsky.social , @trevorbrandt.bsky.social, Karina, @shaharsu.bsky.social and @remenecker.bsky.social. www.nature.com/articles/s41...
nature.com
Rational design of disordered proteins for sequence–function investigation - Nature
GOOSE enables the design and testing of thousands of disordered protein region sequences to reveal distinct sequence-to-function relationships.
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Shahar Sukenik @shaharsu.bsky.social · 29/07/2026
Finally out - our work on high throughput design and characterization of disordered protein sequences 🪱🪱🪱. A long time collaboration with BFFs @alexholehouse.bsky.social and @remenecker.bsky.social, with experimental work led by @trevorbrandt.bsky.social and @karaehunt.bsky.social.
nature.com
Rational design of disordered proteins for sequence–function investigation - Nature
GOOSE enables the design and testing of thousands of disordered protein region sequences to reveal distinct sequence-to-function relationships.
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Needhi Bhalla 💅🏽 @needhibhalla.bsky.social · 29/07/2026
From the abstract: “promoting a woman to Associate Professor increases female faculty by 1.5 members after 15 years, leads to six additional female PhD graduates over the following decade, and raises the number who subsequently remain in academia and reach tenured positions”
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 27/07/2026
A GSK3-dependent phosphorylation switch licenses BNIP3-mediated mitophagy www.biorxiv.org/content/10.64898/20…
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 24/07/2026
Identification of lipid specificity in membrane organizing protein complexes www.biorxiv.org/content/10.64898/20…
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bioRxiv Biochemistry @biorxiv-biochem.bsky.social · 23/07/2026
A de novo designed enzyme for photo-proximity labeling of E3 ligase neighborhoods in live cells www.biorxiv.org/content/10.64898/20…
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tlochetto.bsky.social @tlochetto.bsky.social · 22/07/2026
I am so excited to see my first, first author manuscript live on bioRxiv! I remember the day I went to my PI's office and said "I want to investigate the skeletal muscles of these mice" without any idea of how to necropy them... now skeletal muscle is an organ of interest in our lab moving forward!
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Natalie Niemi @nieminm.bsky.social · 21/07/2026
New preprint from the lab, led by the ever-talented grad student Tessa Lochetto @tlochetto.bsky.social! We find that loss of our favorite phosphatase Pptc7 decreases lean mass, induces skeletal muscle dysfunction, and causes metabolic derangements in adult mice: doi.org/10.64898/202... /1
doi.org
Sustained loss of Pptc7 triggers variable skeletal muscle dysfunction and diminished body mass through dysregulation of BNIP3
The mitochondrial phosphatase PPTC7 is required to sustain mammalian metabolism, as its global knockout (KO) triggers hypoketotic hypoglycemia and perinatal lethality in mice. However, the extent to w...
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bioRxiv Biochemistry @biorxiv-biochem.bsky.social · 21/07/2026
Proximity Labelling Reveals Spatial Organisation of Mitochondrial Protein Import Complexes www.biorxiv.org/content/10.64898/20…
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Aaron and the Hoskins Lab at UW Madison @uwmadisonrna.bsky.social · 15/07/2026
This would seem to throw some cold water on the @cellpress.bsky.social paper claiming to have made "the first eukaryote functionally independent of the spliceosome"
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American Society for Cell Biology @ascbiology.bsky.social · 15/07/2026
Available in MBoC A yeast study shows that depletion of the ribosomal protein Rpl32 disrupts ribosome biogenesis & triggers G1 arrest. Surprisingly, translation remains efficient, revealing links between ribosome assembly & cell cycle control. www.molbiolcell.org/doi/10.1091/mbc…
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