Hannah R Bridges

Hannah R Bridges

@hrbridges.bsky.social

Biochemist and Structural Biologist❄️🔬, occasional artist, keeper of orchids, converted cat person 🐾| all views my own

700 Followers 227 Following 3 Posts Joined Jan 2024
1 month ago
Post image

🚀 CryoSPARC v5.0 BETA is here!

We’re excited to deploy another major #CryoSPARC release to help enable and accelerate #cryoEM data analysis. v5 has a redesigned underlying software system and many new features - highlights in thread!

Full changelog: cryosparc.com/updates/v5.0.0

67 34 1 1
2 months ago
Original post on fediscience.org

RE: https://fediscience.org/@Guillawme/111534984107819771

Something really cool happened to me this year!

@HRBridges re-processed a #cryoEM dataset from some previous work of mine and colleagues (publicly available as EMPIAR-10739; see quoted post below for a summary of this work). She […]

13 8 3 0
3 months ago
Preview
Structura Bio | Structura Bio

🚀 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...

9 14 0 0
4 months ago

ALC1 Finds a New Foothold on the Nucleosome's Super-Groove https://www.biorxiv.org/content/10.1101/2025.11.10.687450v1

3 3 0 1
4 months ago
Post image

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...

32 11 0 1
4 months ago
Video thumbnail

🚀 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...

65 21 1 3
6 months ago
Post image

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-...

16 5 0 1
7 months ago
Video thumbnail

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...

25 5 0 0
7 months ago
Characterised members of the human SLC25 mitochondrial family. Members of the mitochondrial carriers are shown in rainbow (blue to red) cartoon and surface representations with their primary substrates shown in sphere representations to scale. Only one paralogue is shown.

Our review on the peculiar properties of mitochondrial carriers of the SLC25 family out: portlandpress.com/biochemj/art...

32 9 0 0
7 months ago

That's a wrap! The results of the first #cryoEM heterogeneity challenge are up on biorxiv!
biorxiv.org/content/10.110

45 22 3 4
7 months ago
Video thumbnail

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...

34 11 0 0
10 months ago

A really insightful piece, Christian :) I used to think on this topic often. It will be interesting to see how things change for individuals and for the system, as more people realise the toll that such professional and personal dissonance can have.

3 0 0 0
10 months ago
Preview
The Professional Self: The Enemy Inside

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...

44 15 8 8
10 months ago
Post image

Well, somebody had to do it @nucleosomepolice.bsky.social 😬

Did you know that the nucleosome inspires the Millennium Falcon design? #Maythe4thBeWithYou #MayThe4th #MayTheFourthBeWithYou

104 22 3 3
10 months ago
Post image

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...

32 7 0 0
10 months ago
Preview
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.

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

43 13 2 0
11 months ago
Video thumbnail

#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

52 19 1 2
11 months ago

Check out our recent preprint 👇on counting particles to estimate populations in #cryoem: noise can bias the estimates; with Luke Evans & a great team.

29 13 0 1
11 months ago
Preview
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...

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....

24 10 2 0
11 months ago
Video thumbnail

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

463 144 15 35
1 year ago

Awesome and exciting times @macleanlab.bsky.social !

4 0 1 0
1 year ago
Post image

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...

46 31 3 1
1 year ago

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

38 4 1 1
1 year ago
Preview
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…

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...

6 2 0 0
1 year ago
Preview
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...

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...

63 30 3 2
1 year ago
Post image

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...

34 17 0 0
1 year ago
Video thumbnail

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

47 9 2 0
1 year ago
bioRxiv Manuscript Processing System Manuscript Processing System for bioRxiv.

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!)

46 16 3 4
1 year ago
Cryo-EM map and atomic model of the RAVE complex (regulator of ATPases of endosomes and vacuoles) bound to a partial V1-ATPase complex Atomic model showing that the RAVE complex binds to a region of the V1 complex subunit A not found in the homologous ATP synthase subunit beta.

Most protein complexes are born only once. V-ATPase assembles over and over as part of its regulatory mechanism, enabled by RAVE (regulator of ATPase of vacuoles and endosomes)
@hanlinw222.bsky.social's 1st struct of RAVE bound to a partial V1 complex now out in PNAS.
www.pnas.org/doi/10.1073/...

62 14 1 0
1 year ago

Scientists, academics, researchers: We’re excited to share that @altmetric.com is now tracking mentions of your research on Bluesky! 🧪

29,661 5,024 458 279