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Christian Speck

@speck-lab.bsky.social
457 followers 402 following 14 posts

Biochemist who uses interdisciplinary approaches to uncover molecular mechanisms in DNA replication. Professor at Imperial College London specklab.com

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Reposted by Christian Speck
MRC Laboratory of Medical Sciences @mrc-lms.bsky.social · 17/08/2026
Your cells copy 3 billion DNA letters every time they divide – and only when they're meant to. New research in Nature Communications reveals how a protein pair, Sld3 and Sld7, detects when the cell's DNA-copying machine is "switched on" and delivers the final piece needed to kick off replication.
lms.mrc.ac.uk
Study reveals key steps in switching on DNA replication
Researchers at the MRC Laboratory of Medical Sciences (LMS), Imperial College London and their collaborators have uncovered a crucial mechanism that cells use to control when to start DNA copying. Thi...
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Christian Speck @speck-lab.bsky.social · 17/08/2026
🧬 How is MCM2-7 switched on? Our paper shows DDK phosphorylation exposes Sld3-binding sites on Mcm4/Mcm6. Sld3-Cdc45 then delivers Cdc45 to Mcm2/Mcm5, driving CMG assembly. In summary, our work explains why MCM2-7 phosphorylation is needed to turn on replication. www.nature.com/articles/s41...
nature.com
Structural insights into Sld3-Sld7-dependent Cdc45 loading during replication initiation - Nature Communications
DNA replication depends on loading Cdc45 onto the MCM2-7 helicase to start DNA unwinding. Here, the authors use cryo-EM to show how phosphorylation enables Sld3-Sld7 to bind MCM2-7 and position Cdc45 ...
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Christian Speck @speck-lab.bsky.social · 28/07/2026
🧬 Delighted to share our new Nature Communications paper! We show how MCM2-7 double hexamers become active helicases and trigger DNA melting in vivo. Led by Chris Weekes & L. Maximilian Reuter. Congratulations to the whole team! doi.org/10.1038/s414... #DNAReplication
doi.org
Mechanisms of MCM2–7 helicase activation and initial DNA melting at near base-pair resolution - Nature Communications
DNA replication begins when inactive helicases are switched on to unwind DNA. Here, the authors map this activation in yeast, revealing where DNA first melts and how helicase splitting, factor release...
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Reposted by Christian Speck
Robin Allshire 🇮🇪 🇪🇺✊🏿 ⬆️ Zak’s favourite nucleosome: K9me @allshire-lab.bsky.social · 09/04/2026
Very upsetting to hear the sad news of Greg Hannon’s passing. I always enjoyed our far too few conversations we had over the years. He had an interesting and insightful perspective on any science being discussed. He will be missed. www.cruk.cam.ac.uk/news/in-memo...
cruk.cam.ac.uk
In Memoriam: Professor Greg Hannon (1964–2026) - Cancer Research UK Cambridge Institute
Greg was already a world-renowned scientist when appointed Director, and for the community, he was a visionary leader, a cherished mentor, and a singular force of nature whose influence shaped the research landscape.
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Christian Speck @speck-lab.bsky.social · 19/01/2026
📢 One more week to go... exciting fully funded #PhD position for UK candidates to work across #ICR and #Imperial on novel mechanisms in genome stability and #CancerResearch. #PhDStudentship #LifeSciences #DNAReplication #CRISPR
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Christian Speck @speck-lab.bsky.social · 31/12/2025
🚨 Interdisciplinary PhD opportunity for graduates interested in DNA replication, chromatin biology, and cancer research. Please share with potential candidates.
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Christian Speck @speck-lab.bsky.social · 18/12/2025
We are recruiting a PhD student to tackle a fundamental question in cancer biology: how DNA replication fails at centromeres and drives chromosomal instability (CIN) — a major driver of tumour evolution and therapy resistance. tiny.cc/vilw001 #PhD #CancerResearch #GenomeStability #Chromatin
findaphd.com
PhD Studentship: Understanding How Centromere Replication Fails in Cancer Imperial College London & The Institute of Cancer Research (CRUK Convergence Science Centre) at Institute of Cancer Research o...
PhD Project - PhD Studentship: Understanding How Centromere Replication Fails in Cancer Imperial College London & The Institute of Cancer Research (CRUK Convergence Science Centre) at Institute of...
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Christian Speck @speck-lab.bsky.social · 27/10/2025
Blue-sky, I need your help. Is alphafold good in predicting protein-protein interactions involving beta sheets?
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Reposted by Christian Speck
MRC Laboratory of Medical Sciences @mrc-lms.bsky.social · 09/07/2025
A new study, published today in Nature, reveals the hidden benefits of weight loss on fat tissue. A better understanding of how weight loss leads to health improvements at a molecular level could help inform the development of therapies for diseases such as type 2 diabetes in the future.
lms.mrc.ac.uk
Study reveals the hidden benefits of weight loss on fat tissue
Scientists from the MRC Laboratory of Medical Sciences (LMS) and Imperial College London have produced the first detailed characterisation of the changes that weight loss causes in human fat tissue by...
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Christian Speck @speck-lab.bsky.social · 05/05/2025
Still time to apply for the MRC LMS Emerging Innovators Fellowship for scientists of Black heritage!!!
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Christian Speck @speck-lab.bsky.social · 24/02/2025
📢To all postdocs. Are you ready to start your semi-independent career? The BBSRC Fellowship call is open. We may host you if you work at the interface of DNA replication/chromatin biology/cancer and like to use protein biochemistry, genomics, cryo-EM, AlphaFold, MD... www.ukri.org/opportunity/...
ukri.org
2024 BBSRC Fellowships scheme
Apply for funding to carry out independent research within a host laboratory and gain leadership skills.
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Reposted by Christian Speck
AlphaFold Unofficial @alphafold.bsky.social · 04/02/2025
700,000 women are to be recruited to take part in an NHS AI breast cancer screening trial in England. Five different AI platforms will be tested across 30 sites from April to see if the technology can speed up diagnosis as well as free up radiologists. www.bbc.com/news/article...
bbc.com
Major breast cancer screening AI trial to begin - BBC News
Almost 700,000 women to be recruited to study as government fires starting gun on cancer strategy.
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Reposted by Christian Speck
Smolka Lab @smolka-lab.bsky.social · 17/12/2024
Excited to share our preprint reporting a completely new approach to study kinase signaling: ProKAS. ProKAS is based on a tandem array of peptide sensors with barcodes for multiplexed, spatial and kinetic applications. We applied it to DDR kinases. Please share. www.biorxiv.org/content/10.1...
We developed a proteomic kinase activity sensor platform (ProKAS) for the analysis of kinase signaling using mass spectrometry. ProKAS is based on a tandem array of peptide sensors with amino acid barcodes that allow multiplexed analysis for spatial, kinetic, and screening applications.
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Christian Speck @speck-lab.bsky.social · 07/12/2024
I was waiting for that...
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Reposted by Christian Speck
Institute for Protein Innovation @ipiproteins.bsky.social · 25/11/2024
The Baker Lab (@uwproteindesign.bsky.social) recently hosted this powerful webinar on computational #proteindesign. Take a journey through the history of this groundbreaking field, guided by some of the greats! 🧬🧶 #alphafold #proteomics #proteinscience www.youtube.com/live/BuJGTn7...
youtube.com
YouTube
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Reposted by Christian Speck
Daniela Barillà @danielabarilla.bsky.social · 23/11/2024
📢 Interested in chromosomes and microbes thriving at the edge of life?PhD project in York-UK on chromosome segregation in #Archaea. Supervised by me, @Steve Quinn & @georgerheath.bsky.social www.findaphd.com/phds/project... Open to Applicants Worldwide! 📅 January 6, 2025 #microsky #archaeasky
Diagram showing archaeal cells containing two chromosomes bound by proteins prior to cell division.
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