Julian Ehrmann
@julianehrmann.bsky.social
T32 NRSA funded Postdoc @WuLabHarvard
PhD @clausenlab.bsky.social
Inflammasomes, innate immunity, nephropathy, ubiquitin ligases, cryo-EM
PhD @clausenlab.bsky.social
Inflammasomes, innate immunity, nephropathy, ubiquitin ligases, cryo-EM
Reposted by Julian Ehrmann
Very happy to share our collaborative project on FAM118 proteins - noncanonical sirtuins that form filaments and process NAD in human and other vertebrate cells.
Filament formation and NAD processing by noncanonical human FAM118 sirtuins
Nature Structural & Molecular Biology - Baretić and Missoury et al. identify vertebrate proteins FAM118B and FAM118A as sirtuins similar to bacterial antiphage enzymes and show that...
rdcu.be
November 17, 2025 at 11:37 AM
Very happy to share our collaborative project on FAM118 proteins - noncanonical sirtuins that form filaments and process NAD in human and other vertebrate cells.
Reposted by Julian Ehrmann
New paper alert! Scientists in Clemens Plaschka’s lab at the IMP and @juliusbrennecke.bsky.social's lab at
@imbavienna.bsky.social solved a decade-old puzzle, uncovering how the information molecule mRNA travels from the cell’s nucleus to its periphery. More: bit.ly/4nHcvys
@imbavienna.bsky.social solved a decade-old puzzle, uncovering how the information molecule mRNA travels from the cell’s nucleus to its periphery. More: bit.ly/4nHcvys
November 6, 2025 at 4:04 PM
New paper alert! Scientists in Clemens Plaschka’s lab at the IMP and @juliusbrennecke.bsky.social's lab at
@imbavienna.bsky.social solved a decade-old puzzle, uncovering how the information molecule mRNA travels from the cell’s nucleus to its periphery. More: bit.ly/4nHcvys
@imbavienna.bsky.social solved a decade-old puzzle, uncovering how the information molecule mRNA travels from the cell’s nucleus to its periphery. More: bit.ly/4nHcvys
Reposted by Julian Ehrmann
Glad to share the final version of our story about the UBR4 complex, an E4 ligase protein quality control hub @science.org. Now with more cryo-EM structures and a deeper dive into substrate recognition, especially escaped mitochondrial proteins @clausenlab.bsky.social www.science.org/doi/10.1126/...
August 28, 2025 at 6:54 PM
Glad to share the final version of our story about the UBR4 complex, an E4 ligase protein quality control hub @science.org. Now with more cryo-EM structures and a deeper dive into substrate recognition, especially escaped mitochondrial proteins @clausenlab.bsky.social www.science.org/doi/10.1126/...
Reposted by Julian Ehrmann
Happy to share our work on the structure and function of the unusual E3 ligase ZNFX1 @cp-cell.bsky.social. It uses a nucleic acid-activated transthiolation mechanism, ubiquitinating and clustering RNA to protect cells in an immune response. @clausenlab.bsky.social
www.cell.com/cell/fulltex...
www.cell.com/cell/fulltex...
A split-site E3 ligase mechanism enables ZNFX1 to ubiquitinate and cluster single-stranded RNA into ubiquitin-coated nucleoprotein particles
Grabarczyk et al. show the structure and mechanism of a non-canonical ubiquitin ligase,
which is activated through nucleic-acid-induced oligomerization and is critical for
cell survival during immune ...
www.cell.com
August 27, 2025 at 7:04 PM
Happy to share our work on the structure and function of the unusual E3 ligase ZNFX1 @cp-cell.bsky.social. It uses a nucleic acid-activated transthiolation mechanism, ubiquitinating and clustering RNA to protect cells in an immune response. @clausenlab.bsky.social
www.cell.com/cell/fulltex...
www.cell.com/cell/fulltex...
Working on Death Domain Fold proteins (CARD, Pyrin, DED, DD)? Check out our new paper for some more perspective:
www.pnas.org/doi/10.1073/pnas.2426986122
www.pnas.org/doi/10.1073/pnas.2426986122
www.pnas.org
February 20, 2025 at 6:26 PM
Working on Death Domain Fold proteins (CARD, Pyrin, DED, DD)? Check out our new paper for some more perspective:
www.pnas.org/doi/10.1073/pnas.2426986122
www.pnas.org/doi/10.1073/pnas.2426986122
Reposted by Julian Ehrmann
Happy to share our new study showing that the Ub E3 ligase SIAH1, known to dimerise via its C-term SBD, also dimerises via its N-term RING. When these tendencies combine, full-length SIAH1 forms multimers, which might explain its clustering in cells & preference for aggregated/multimeric substrates.
February 6, 2025 at 9:29 AM
Happy to share our new study showing that the Ub E3 ligase SIAH1, known to dimerise via its C-term SBD, also dimerises via its N-term RING. When these tendencies combine, full-length SIAH1 forms multimers, which might explain its clustering in cells & preference for aggregated/multimeric substrates.
Reposted by Julian Ehrmann
Best way to start 2025! Thrilled to share our Nature paper about the structures of axonemal components from sperm flagella and from epithelial cilia of the oviduct and brain ventricles. Great collaboration with Tzviya Zeev-Ben-Mordehai and @alanbrownhms.bsky.social
www.nature.com/articles/s41...
www.nature.com/articles/s41...
January 1, 2025 at 5:20 PM
Best way to start 2025! Thrilled to share our Nature paper about the structures of axonemal components from sperm flagella and from epithelial cilia of the oviduct and brain ventricles. Great collaboration with Tzviya Zeev-Ben-Mordehai and @alanbrownhms.bsky.social
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Julian Ehrmann
🎄 xmas preprint 🎄 we are excited to share our cryo-EM structure of UBR4 in complex with KCMF1 and CALM1. the PQC ligase forms a massive ubiquitination arena, primed to amplify ubiquitin chains (E4 activity) and boost degradation of defective proteins. www.biorxiv.org/content/10.1...
December 21, 2024 at 10:46 AM
🎄 xmas preprint 🎄 we are excited to share our cryo-EM structure of UBR4 in complex with KCMF1 and CALM1. the PQC ligase forms a massive ubiquitination arena, primed to amplify ubiquitin chains (E4 activity) and boost degradation of defective proteins. www.biorxiv.org/content/10.1...
giant e3 ligases shaking in their boots as Dan crosses another one off the list
Happy to share our UBR4 structures. Check out the preprint to see how this giant E4 ligase complex selects substrates for ubiquitin chain extension. We also look at conservation and adaptations across humans, nematodes and plants.
www.biorxiv.org/content/10.1...
@clausenlab.bsky.social
www.biorxiv.org/content/10.1...
@clausenlab.bsky.social
December 21, 2024 at 12:57 PM
giant e3 ligases shaking in their boots as Dan crosses another one off the list
Reposted by Julian Ehrmann
Are you a #postdoc with an innovative vision for starting your own lab in #Syntheticbiology, #Genomics, #GeneRegulation, #Development, #Cancer, #Immunology or #InfectionBiology?
@IMPvienna is inviting applications for group leader positions: www.imp.ac.at/career/open-...
Pls share!
@IMPvienna is inviting applications for group leader positions: www.imp.ac.at/career/open-...
Pls share!
November 19, 2024 at 3:08 PM
Are you a #postdoc with an innovative vision for starting your own lab in #Syntheticbiology, #Genomics, #GeneRegulation, #Development, #Cancer, #Immunology or #InfectionBiology?
@IMPvienna is inviting applications for group leader positions: www.imp.ac.at/career/open-...
Pls share!
@IMPvienna is inviting applications for group leader positions: www.imp.ac.at/career/open-...
Pls share!
Reposted by Julian Ehrmann
We are still considering postdoc candidates for the post advertised below. A 2-year contract beginning in 2025 to work on protein SUMO E3 ligases and the nucleosome.
November 16, 2024 at 6:43 AM
We are still considering postdoc candidates for the post advertised below. A 2-year contract beginning in 2025 to work on protein SUMO E3 ligases and the nucleosome.
Reposted by Julian Ehrmann
Check out this list of ubiquitin and Ubl profiles to follow. Repost if you want me to add you to it. Let’s create a good community here ☁️ go.bsky.app/3VPQofn
November 15, 2024 at 7:38 PM
Check out this list of ubiquitin and Ubl profiles to follow. Repost if you want me to add you to it. Let’s create a good community here ☁️ go.bsky.app/3VPQofn
Hard to convey how positively working with Marcin will impact your science- can not recommend enough.
We are still considering postdoc candidates for the post advertised below. A 2-year contract beginning in 2025 to work on protein SUMO E3 ligases and the nucleosome.
November 17, 2024 at 7:24 PM
Hard to convey how positively working with Marcin will impact your science- can not recommend enough.