Hannah R Bridges
@hrbridges.bsky.social
Biochemist and Structural Biologist❄️🔬, occasional artist, keeper of orchids, converted cat person 🐾| all views my own
Reposted by Hannah R Bridges
🚀 Hiring: Cryo-EM Application Scientist, Marketing!
Develop and deliver high-impact scientific marketing content, illustrate the value of new #CryoSPARC features and #cryoEM advances, and help scientists understand how our tools can help solve their problems.
structura.bio/careers/appl...
Develop and deliver high-impact scientific marketing content, illustrate the value of new #CryoSPARC features and #cryoEM advances, and help scientists understand how our tools can help solve their problems.
structura.bio/careers/appl...
Structura Bio | Structura Bio
structura.bio
November 20, 2025 at 9:00 PM
🚀 Hiring: Cryo-EM Application Scientist, Marketing!
Develop and deliver high-impact scientific marketing content, illustrate the value of new #CryoSPARC features and #cryoEM advances, and help scientists understand how our tools can help solve their problems.
structura.bio/careers/appl...
Develop and deliver high-impact scientific marketing content, illustrate the value of new #CryoSPARC features and #cryoEM advances, and help scientists understand how our tools can help solve their problems.
structura.bio/careers/appl...
Reposted by Hannah R Bridges
ALC1 Finds a New Foothold on the Nucleosome's Super-Groove https://www.biorxiv.org/content/10.1101/2025.11.10.687450v1
November 11, 2025 at 2:48 AM
ALC1 Finds a New Foothold on the Nucleosome's Super-Groove https://www.biorxiv.org/content/10.1101/2025.11.10.687450v1
Reposted by Hannah R Bridges
On a gruelling hunt for rare associated molecules in your #cryoEM particle stack and not sure where to look?
Discover practical tips and tricks in our new case study using #CryoSPARC v4.7.1 where we find and refine a low-population interaction partner!
guide.cryosparc.com/processing-d...
Discover practical tips and tricks in our new case study using #CryoSPARC v4.7.1 where we find and refine a low-population interaction partner!
guide.cryosparc.com/processing-d...
October 30, 2025 at 1:33 PM
On a gruelling hunt for rare associated molecules in your #cryoEM particle stack and not sure where to look?
Discover practical tips and tricks in our new case study using #CryoSPARC v4.7.1 where we find and refine a low-population interaction partner!
guide.cryosparc.com/processing-d...
Discover practical tips and tricks in our new case study using #CryoSPARC v4.7.1 where we find and refine a low-population interaction partner!
guide.cryosparc.com/processing-d...
Reposted by Hannah R Bridges
🚀 Introducing fully automated data processing for repeat-target #cryoEM.
Using new tools in #CryoSPARC, it is now possible to obtain resolutions & map quality equal to or better than manual processing, with zero user intervention.
Preprint: www.biorxiv.org/content/10.1...
Using new tools in #CryoSPARC, it is now possible to obtain resolutions & map quality equal to or better than manual processing, with zero user intervention.
Preprint: www.biorxiv.org/content/10.1...
October 20, 2025 at 2:32 PM
🚀 Introducing fully automated data processing for repeat-target #cryoEM.
Using new tools in #CryoSPARC, it is now possible to obtain resolutions & map quality equal to or better than manual processing, with zero user intervention.
Preprint: www.biorxiv.org/content/10.1...
Using new tools in #CryoSPARC, it is now possible to obtain resolutions & map quality equal to or better than manual processing, with zero user intervention.
Preprint: www.biorxiv.org/content/10.1...
Reposted by Hannah R Bridges
Advanced #cryoEM workflows are easy in #CryoSPARC: use the Low-Level Results Interface to combine upstream extracted particles with downstream pose and CTF information, use a volume result from an intermediate iteration of a refinement to create a mask, and more! guide.cryosparc.com/application-...
September 10, 2025 at 3:46 PM
Advanced #cryoEM workflows are easy in #CryoSPARC: use the Low-Level Results Interface to combine upstream extracted particles with downstream pose and CTF information, use a volume result from an intermediate iteration of a refinement to create a mask, and more! guide.cryosparc.com/application-...
Reposted by Hannah R Bridges
Flexibility can be frustrating when processing a #cryoEM dataset. If your target has a wobbly domain, check out our new case study on FaNaC1 for continuous heterogeneity tips in #CryoSPARC!
guide.cryosparc.com/processing-d...
guide.cryosparc.com/processing-d...
August 5, 2025 at 1:46 PM
Flexibility can be frustrating when processing a #cryoEM dataset. If your target has a wobbly domain, check out our new case study on FaNaC1 for continuous heterogeneity tips in #CryoSPARC!
guide.cryosparc.com/processing-d...
guide.cryosparc.com/processing-d...
Reposted by Hannah R Bridges
Our review on the peculiar properties of mitochondrial carriers of the SLC25 family out: portlandpress.com/biochemj/art...
July 25, 2025 at 11:29 AM
Our review on the peculiar properties of mitochondrial carriers of the SLC25 family out: portlandpress.com/biochemj/art...
Reposted by Hannah R Bridges
That's a wrap! The results of the first #cryoEM heterogeneity challenge are up on biorxiv!
biorxiv.org/content/10.110
biorxiv.org/content/10.110
biorxiv.org
July 23, 2025 at 9:43 PM
That's a wrap! The results of the first #cryoEM heterogeneity challenge are up on biorxiv!
biorxiv.org/content/10.110
biorxiv.org/content/10.110
Reposted by Hannah R Bridges
When particles have orientation bias, the resulting maps are often streaked along the missing directions. In this case study, we cover why orientation bias produces anisotropic #cryoEM maps and how you may be able to recover from it!
guide.cryosparc.com/processing-d...
guide.cryosparc.com/processing-d...
July 23, 2025 at 12:29 PM
When particles have orientation bias, the resulting maps are often streaked along the missing directions. In this case study, we cover why orientation bias produces anisotropic #cryoEM maps and how you may be able to recover from it!
guide.cryosparc.com/processing-d...
guide.cryosparc.com/processing-d...
Reposted by Hannah R Bridges
I'd like to share this short piece on a topic I hope you will find useful. It is the result of a personl journey and many discussions with friends and peers. Let me know your thoughts.
network.febs.org/posts/the-pr...
network.febs.org/posts/the-pr...
The Professional Self: The Enemy Inside
network.febs.org
May 9, 2025 at 6:05 PM
I'd like to share this short piece on a topic I hope you will find useful. It is the result of a personl journey and many discussions with friends and peers. Let me know your thoughts.
network.febs.org/posts/the-pr...
network.febs.org/posts/the-pr...
Reposted by Hannah R Bridges
Well, somebody had to do it @nucleosomepolice.bsky.social 😬
Did you know that the nucleosome inspires the Millennium Falcon design? #Maythe4thBeWithYou #MayThe4th #MayTheFourthBeWithYou
Did you know that the nucleosome inspires the Millennium Falcon design? #Maythe4thBeWithYou #MayThe4th #MayTheFourthBeWithYou
May 4, 2025 at 6:30 AM
Well, somebody had to do it @nucleosomepolice.bsky.social 😬
Did you know that the nucleosome inspires the Millennium Falcon design? #Maythe4thBeWithYou #MayThe4th #MayTheFourthBeWithYou
Did you know that the nucleosome inspires the Millennium Falcon design? #Maythe4thBeWithYou #MayThe4th #MayTheFourthBeWithYou
Reposted by Hannah R Bridges
Grappling with poorly-resolved ligand binding sites in #cryoEM maps?
Check out our new case study on a peptide ligand-bound GPCR showing how practical tips and features in #CryoSPARC v4.7 improve locally refined map quality and reveal clearer ligand density!
guide.cryosparc.com/processing-d...
Check out our new case study on a peptide ligand-bound GPCR showing how practical tips and features in #CryoSPARC v4.7 improve locally refined map quality and reveal clearer ligand density!
guide.cryosparc.com/processing-d...
April 29, 2025 at 3:22 PM
Grappling with poorly-resolved ligand binding sites in #cryoEM maps?
Check out our new case study on a peptide ligand-bound GPCR showing how practical tips and features in #CryoSPARC v4.7 improve locally refined map quality and reveal clearer ligand density!
guide.cryosparc.com/processing-d...
Check out our new case study on a peptide ligand-bound GPCR showing how practical tips and features in #CryoSPARC v4.7 improve locally refined map quality and reveal clearer ligand density!
guide.cryosparc.com/processing-d...
Reposted by Hannah R Bridges
Our paper is finally out: Molecular basis of pyruvate transport and inhibition of the human mitochondrial pyruvate carrier | Science Advances www.science.org/doi/10.1126/...
#mitochondria #cryo-EM
#mitochondria #cryo-EM
Molecular basis of pyruvate transport and inhibition of the human mitochondrial pyruvate carrier
The mitochondrial pyruvate carrier transport mechanism is ΔpH driven and is inhibited competitively by distinct compound classes.
www.science.org
April 18, 2025 at 6:16 PM
Our paper is finally out: Molecular basis of pyruvate transport and inhibition of the human mitochondrial pyruvate carrier | Science Advances www.science.org/doi/10.1126/...
#mitochondria #cryo-EM
#mitochondria #cryo-EM
Reposted by Hannah R Bridges
#CryoSPARC v4.7 is out! 🚀
Featuring a new automatic Micrograph Junk Detector that labels and rejects contaminants, new tools for curating subsets of particles, performance and stability fixes, and more!
Full changelog: cryosparc.com/updates
#cryoEM
Featuring a new automatic Micrograph Junk Detector that labels and rejects contaminants, new tools for curating subsets of particles, performance and stability fixes, and more!
Full changelog: cryosparc.com/updates
#cryoEM
April 9, 2025 at 2:14 PM
#CryoSPARC v4.7 is out! 🚀
Featuring a new automatic Micrograph Junk Detector that labels and rejects contaminants, new tools for curating subsets of particles, performance and stability fixes, and more!
Full changelog: cryosparc.com/updates
#cryoEM
Featuring a new automatic Micrograph Junk Detector that labels and rejects contaminants, new tools for curating subsets of particles, performance and stability fixes, and more!
Full changelog: cryosparc.com/updates
#cryoEM
Reposted by Hannah R Bridges
Check out our recent preprint 👇on counting particles to estimate populations in #cryoem: noise can bias the estimates; with Luke Evans & a great team.
Counting particles could give wrong probabilities in Cryo-Electron Microscopy https://www.biorxiv.org/content/10.1101/2025.03.27.644168v1
March 30, 2025 at 1:29 PM
Check out our recent preprint 👇on counting particles to estimate populations in #cryoem: noise can bias the estimates; with Luke Evans & a great team.
Reposted by Hannah R Bridges
Now published J. Med. Chem! @zestytoast.bsky.social's structure of type II NADH dehydrogenase from mycobacteria. A promising drug target for TB & other mycobacterial infections, Yingke demonstrates how an inhibitor can block transfer of electrons from NADH to the ETC.
pubs.acs.org/doi/full/10....
pubs.acs.org/doi/full/10....
Structure of Mycobacterial NDH-2 Bound to a 2-Mercapto-Quinazolinone Inhibitor
Mycobacterial type II NADH dehydrogenase (NDH-2) is a promising drug target because of its central role in energy metabolism in Mycobacterium tuberculosis and other pathogens, and because it lacks a k...
pubs.acs.org
March 21, 2025 at 4:55 PM
Now published J. Med. Chem! @zestytoast.bsky.social's structure of type II NADH dehydrogenase from mycobacteria. A promising drug target for TB & other mycobacterial infections, Yingke demonstrates how an inhibitor can block transfer of electrons from NADH to the ETC.
pubs.acs.org/doi/full/10....
pubs.acs.org/doi/full/10....
Reposted by Hannah R Bridges
In a new Science study, cryo–electron tomography captures the in-cell architecture of the mitochondrial respiratory chain, illuminating how the coordinated action of molecular machines drives life’s fundamental energy conversion.
Learn more in this week's issue: scim.ag/3FA3Ygq
Learn more in this week's issue: scim.ag/3FA3Ygq
March 20, 2025 at 6:05 PM
In a new Science study, cryo–electron tomography captures the in-cell architecture of the mitochondrial respiratory chain, illuminating how the coordinated action of molecular machines drives life’s fundamental energy conversion.
Learn more in this week's issue: scim.ag/3FA3Ygq
Learn more in this week's issue: scim.ag/3FA3Ygq
Awesome and exciting times @macleanlab.bsky.social !
What a proud moment to see @macleanlab.bsky.social starting his own lab in a few days 🤩
For all of you #ECRs out there thinking who should you work with in your next career stage - contact Andrew think no more!
For all of you #ECRs out there thinking who should you work with in your next career stage - contact Andrew think no more!
February 27, 2025 at 6:39 PM
Awesome and exciting times @macleanlab.bsky.social !
Reposted by Hannah R Bridges
We are hosting a cryo-EM grid nanofabrication workshop on 28 April 2025, as part of the Canadian Cryo-EM Nexus (ccemn.ca).
Learn how to make holey gold or holey carbon grids in your own laboratory!
Space is limited, so please apply at web.cvent.com/event/ee88ac...
Learn how to make holey gold or holey carbon grids in your own laboratory!
Space is limited, so please apply at web.cvent.com/event/ee88ac...
January 6, 2025 at 7:28 PM
We are hosting a cryo-EM grid nanofabrication workshop on 28 April 2025, as part of the Canadian Cryo-EM Nexus (ccemn.ca).
Learn how to make holey gold or holey carbon grids in your own laboratory!
Space is limited, so please apply at web.cvent.com/event/ee88ac...
Learn how to make holey gold or holey carbon grids in your own laboratory!
Space is limited, so please apply at web.cvent.com/event/ee88ac...
Reposted by Hannah R Bridges
Finally out! Working with this team was a fantastic learning experience. Also I was excited to determine the in situ clathrin structure for this project! That’s my first EM-structure upload to EMDB. Can I tell my mom I am a structural biologist now? 😁 #cryoET
January 6, 2025 at 6:00 PM
Finally out! Working with this team was a fantastic learning experience. Also I was excited to determine the in situ clathrin structure for this project! That’s my first EM-structure upload to EMDB. Can I tell my mom I am a structural biologist now? 😁 #cryoET
Reposted by Hannah R Bridges
Using 33 pathogenic variants of citrin we identify crucial elements of the carrier domain required for transport and show that the N-terminal domain is not involved in calcium regulation of transport, but causes a mitochondrial import defect, when mutated.
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Distinct roles for the domains of the mitochondrial aspartate/glutamate carrier citrin in organellar localization and substrate transport
Citrin, the mitochondrial aspartate/glutamate carrier isoform 2 (AGC2), is structurally and mechanistically the most complex SLC25 family member, beca…
www.sciencedirect.com
December 1, 2024 at 12:47 PM
Using 33 pathogenic variants of citrin we identify crucial elements of the carrier domain required for transport and show that the N-terminal domain is not involved in calcium regulation of transport, but causes a mitochondrial import defect, when mutated.
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Hannah R Bridges
1/ A new series of #CryoSPARC tutorial videos from this year’s S2C2 #cryoEM image processing workshop are now online! These videos will be interesting to all users and especially those newer to #cryoEM.
www.youtube.com/playlist?lis...
www.youtube.com/playlist?lis...
2024 S2C2 Single-Particle Cryo-EM Image Processing Workshop - YouTube
This playlist contains six recordings covering single particle cryo-EM data processing in CryoSPARC from the 2024 Single-Particle Cryo-EM Image Processing Wo...
www.youtube.com
December 13, 2024 at 6:56 PM
1/ A new series of #CryoSPARC tutorial videos from this year’s S2C2 #cryoEM image processing workshop are now online! These videos will be interesting to all users and especially those newer to #cryoEM.
www.youtube.com/playlist?lis...
www.youtube.com/playlist?lis...
Reposted by Hannah R Bridges
Looking for a primer on why the contrast transfer function matters in #cryoEM?
Have a look at our updated #CryoSPARC Guide pages on CTF estimation! We cover intuition, theory, job types and practical considerations: guide.cryosparc.com/processing-d...
Have a look at our updated #CryoSPARC Guide pages on CTF estimation! We cover intuition, theory, job types and practical considerations: guide.cryosparc.com/processing-d...
December 9, 2024 at 9:24 PM
Looking for a primer on why the contrast transfer function matters in #cryoEM?
Have a look at our updated #CryoSPARC Guide pages on CTF estimation! We cover intuition, theory, job types and practical considerations: guide.cryosparc.com/processing-d...
Have a look at our updated #CryoSPARC Guide pages on CTF estimation! We cover intuition, theory, job types and practical considerations: guide.cryosparc.com/processing-d...
Reposted by Hannah R Bridges
Just for fun, reprocessed a subset (1200 mics) of EMPIAR-11918 (beautiful 40kDa RNA-protein complex) with cryoSPARC to compare with BLUSH/RELION workflow - 3Å NU-refine from 60k blob-picked particles after quick classification without alignments
December 6, 2024 at 3:25 AM
Just for fun, reprocessed a subset (1200 mics) of EMPIAR-11918 (beautiful 40kDa RNA-protein complex) with cryoSPARC to compare with BLUSH/RELION workflow - 3Å NU-refine from 60k blob-picked particles after quick classification without alignments
Reposted by Hannah R Bridges
Finally we are able to share our story on the molecular mechanism of the transformative anti-tuberculosis drug bedaquiline within living cells
www.biorxiv.org/content/10.1...
A (hopefully) broadly-accessible tutorial below ⬇️ (it ended up being really long!)
www.biorxiv.org/content/10.1...
A (hopefully) broadly-accessible tutorial below ⬇️ (it ended up being really long!)
bioRxiv Manuscript Processing System
Manuscript Processing System for bioRxiv.
submit.biorxiv.org
December 5, 2024 at 10:16 PM
Finally we are able to share our story on the molecular mechanism of the transformative anti-tuberculosis drug bedaquiline within living cells
www.biorxiv.org/content/10.1...
A (hopefully) broadly-accessible tutorial below ⬇️ (it ended up being really long!)
www.biorxiv.org/content/10.1...
A (hopefully) broadly-accessible tutorial below ⬇️ (it ended up being really long!)