#flagella — Public Fediverse posts

Mammalian #cilia & #flagella depend on association of A- & B-tubules to form axonemal doublet #microtubules, but how? This study shows that CFAP77 is essential role for #axonemal connection of these tubules and crucial for #sperm motility & #fertility in mice @PLOSBiology plos.io/4ouZ2KJ

Mammalian #cilia & #flagella depend on association of A- & B-tubules to form axonemal doublet #microtubules, but how? This study shows that CFAP77 is essential role for #axonemal connection of these tubules and crucial for #sperm motility & #fertility in mice @PLOSBiology plos.io/4ouZ2KJ

In situ structure of a bacterial flagellar motor at subnanometre resolution reveals adaptations for increased torque | Nature Microbiology

https://www.nature.com/articles/s41564-025-02012-9

#CryoEM #evolution #bacteria #flagella #motor

This reminds me...in grad school (~2013), I came across research about bacteria locomotion, and the bacteria have multiple flagella that form a bundle that twists together.

That was so confusing to me. I imagined them all twisted together, and then each flagellum trying to twist from its own motor. It seems like there would be a jam.

Now I came across two papers that help make sense of it. In both papers they created a scale model of how bacteria flagellum bundle. It seems that the multiple flagella rotate next to each other but do not actually tangle https://www.bu.edu/fluidlab/files/2016/01/particle-image-velocimetry.pdf The second paper helped me to see it better. The helixes of the flagella line up and are in phase, so they effectively get out of each others way as they rotate. In the scale models it did jam if they were driven to hard, which meshed with my intuition. https://www.pnas.org/doi/full/10.1073/pnas.2633596100

#flagella

This reminds me...in grad school (~2013), I came across research about bacteria locomotion, and the bacteria have multiple flagella that form a bundle that twists together.

That was so confusing to me. I imagined them all twisted together, and then each flagellum trying to twist from its own motor. It seems like there would be a jam.

Now I came across two papers that help make sense of it. In both papers they created a scale model of how bacteria flagellum bundle. It seems that the multiple flagella rotate next to each other but do not actually tangle https://www.bu.edu/fluidlab/files/2016/01/particle-image-velocimetry.pdf The second paper helped me to see it better. The helixes of the flagella line up and are in phase, so they effectively get out of each others way as they rotate. In the scale models it did jam if they were driven to hard, which meshed with my intuition. https://www.pnas.org/doi/full/10.1073/pnas.2633596100

#flagella

Forget Propellers, Embrace Tentacle-based Locomotion https://hackaday.com/2025/04/09/forget-propellers-embrace-tentacle-based-locomotion/ #RobotsHacks #underwater #tentacles #flagella #marine #robot #rov

Forget Propellers, Embrace Tentacle-based Locomotion https://hackaday.com/2025/04/09/forget-propellers-embrace-tentacle-based-locomotion/ #RobotsHacks #underwater #tentacles #flagella #marine #robot #rov

Forget Propellers, Embrace Tentacle-based Locomotion - Underwater robots face many challenges, not least of which is how to move around. ... - https://hackaday.com/2025/04/09/forget-propellers-embrace-tentacle-based-locomotion/ #robotshacks #underwater #tentacles #flagella #marine #robot #rov

Forget Propellers, Embrace Tentacle-based Locomotion - Underwater robots face many challenges, not least of which is how to move around. ... - https://hackaday.com/2025/04/09/forget-propellers-embrace-tentacle-based-locomotion/ #robotshacks #underwater #tentacles #flagella #marine #robot #rov

#Bacteria-inspired #robot uses 12 spinning #flagella to roam underwater

https://www.newscientist.com/article/2474732-bacteria-inspired-robot-uses-12-spinning-flagella-to-roam-underwater/

#Bacteria-inspired #robot uses 12 spinning #flagella to roam underwater

https://www.newscientist.com/article/2474732-bacteria-inspired-robot-uses-12-spinning-flagella-to-roam-underwater/

Follow the leader: A new study of #flagella in #algae reveals how they coordinate their movements to ensure cells steer efficiently https://elifesciences.org/digests/86102/follow-the-leader #protists #microbes

The younger flagellum sets the beat for #Chlamydomonas reinhardtii https://elifesciences.org/articles/86102

"To steer, C. reinhardtii adjusts the strength of the strokes made by each flagellum. Despite this asymmetry, the flagella must continue to beat in synchrony to move efficiently."

Follow the leader: A new study of #flagella in #algae reveals how they coordinate their movements to ensure cells steer efficiently https://elifesciences.org/digests/86102/follow-the-leader #protists #microbes

The younger flagellum sets the beat for #Chlamydomonas reinhardtii https://elifesciences.org/articles/86102

"To steer, C. reinhardtii adjusts the strength of the strokes made by each flagellum. Despite this asymmetry, the flagella must continue to beat in synchrony to move efficiently."

Flagellum, shift into reverse gear! https://schaechter.asmblog.org/schaechter/2024/05/hey-flagellum-shift-into-reverse-gear.html

Structural basis of directional switching by the bacterial flagellum https://pubmed.ncbi.nlm.nih.gov/38459206/

"In a manual gearbox, a gearwheel is inserted between the countershaft and the drive shaft. This reverses the rotation. #Flagella of E. coli, Salmonella #bacteria have found a smart solution to do without an additional wheel: they run their engine along the outside of a gearwheel or, if they reverse the direction of rotation, on its inside"

Flagellum, shift into reverse gear! https://schaechter.asmblog.org/schaechter/2024/05/hey-flagellum-shift-into-reverse-gear.html

Structural basis of directional switching by the bacterial flagellum https://pubmed.ncbi.nlm.nih.gov/38459206/

"In a manual gearbox, a gearwheel is inserted between the countershaft and the drive shaft. This reverses the rotation. #Flagella of E. coli, Salmonella #bacteria have found a smart solution to do without an additional wheel: they run their engine along the outside of a gearwheel or, if they reverse the direction of rotation, on its inside"

📣 📣 📣 There are less than nine months remaining until Cilia2024, happening from September 10th to 13th in Dublin! 🇮🇪 :happy:

Remember to mark your calendars! What an amazing lineup of programs and speakers!

For more information, visit http://cilia2024.ie/

Registration opens in February.

@cilia @cellbiology @cellbio
#CellBiology #DevelopmentalBiology #DevBio #Nephrology #Ciliopathies #cilia #Science #Conference #RareDiseases #Kidney #Biology #Flagella #PCD #ADPKD #BBS #NPHP #CKD #PKD

New research finds marine #bacteria ditched their #flagella and other traits when migrating back to the ocean.

#Chloroflexota #extremophiles #evolution

https://phys.org/news/2023-10-marine-bacteria-ditched-flagella-traits.html

New research finds marine #bacteria ditched their #flagella and other traits when migrating back to the ocean.

#Chloroflexota #extremophiles #evolution

https://phys.org/news/2023-10-marine-bacteria-ditched-flagella-traits.html

The shape of this spent flower from our Queen Victoria Agave flower stalk (that I painted for my Perpetual Journal) reminds me of bacteria with flagella!

#SciArt #SciArtist #art #illustration #watercolor #painting #sketchbook #NatureJournal #NatureJournaling #MastoArt #ArtistsOnMastodon #PerpetualJournal #Tucson #SonoranDesert #NativePlants #biodiversity #environment #ecosystem #ecology #nature #outdoors #succulent #agave #flower #wildflower #Summer #flagella

The shape of this spent flower from our Queen Victoria Agave flower stalk (that I painted for my Perpetual Journal) reminds me of bacteria with flagella!

#SciArt #SciArtist #art #illustration #watercolor #painting #sketchbook #NatureJournal #NatureJournaling #MastoArt #ArtistsOnMastodon #PerpetualJournal #Tucson #SonoranDesert #NativePlants #biodiversity #environment #ecosystem #ecology #nature #outdoors #succulent #agave #flower #wildflower #Summer #flagella

The Hitchhiker's Guide to... Flagellar Tips

by Christoph
The same frontispiece twice within a few days at STC? No, not quite. It's not about Roberto's hitchhiking phage this time, or the flagellated bacterium, or the hitchhiking spore, but about the tip of the flagellum (black, left). Disclosure: already back in 2020, I talked with Alise, who created the image, and three other passionate science illustrators...

Read more → https://schaechter.asmblog.org/schaechter/2023/05/the-hitchhikers-guide-to-flagellar-tips.html

#microbiology #flagella

The Hitchhiker's Guide to... Flagellar Tips

by Christoph
The same frontispiece twice within a few days at STC? No, not quite. It's not about Roberto's hitchhiking phage this time, or the flagellated bacterium, or the hitchhiking spore, but about the tip of the flagellum (black, left). Disclosure: already back in 2020, I talked with Alise, who created the image, and three other passionate science illustrators...

Read more → https://schaechter.asmblog.org/schaechter/2023/05/the-hitchhikers-guide-to-flagellar-tips.html

#microbiology #flagella

My #ThrowbackThursday #sciart continues!

Flagella origami - mixed media, 2016.

From the first year of #freelance #ScienceIllustration, I bring you the #StructuralBiology of bacterial #flagella filaments. This was commissioned as part of the branding for a flagella & type-3 secretion conference in #Japan.

I had to learn how to make an #origami pinwheel to do this - it took me ages. Then I realised the elaborate patterned paper I'd chosen was too wild, so I had to make the whole thing again!

My #ThrowbackThursday #sciart continues!

Flagella origami - mixed media, 2016.

From the first year of #freelance #ScienceIllustration, I bring you the #StructuralBiology of bacterial #flagella filaments. This was commissioned as part of the branding for a flagella & type-3 secretion conference in #Japan.

I had to learn how to make an #origami pinwheel to do this - it took me ages. Then I realised the elaborate patterned paper I'd chosen was too wild, so I had to make the whole thing again!

Karl Lechtreck discusses cargo adapters that expand the transport range of intraflagellar transport: https://journals.biologists.com/jcs/article/135/24/jcs260408/286113/Cargo-adapters-expand-the-transport-range-of
#cellbiology #cilia #IFT #BBsome #flagella

Karl Lechtreck discusses cargo adapters that expand the transport range of intraflagellar transport: https://journals.biologists.com/jcs/article/135/24/jcs260408/286113/Cargo-adapters-expand-the-transport-range-of
#cellbiology #cilia #IFT #BBsome #flagella

I'm getting better at staining. This is a sample from the bottom of the jar stained with aqueous methylene blue. I think maybe I can see two #flagella coming off one of the cells in the middle.

There's also one of the tube things in the middle there. It's interesting that the tubes don't stain. That would suggest they're not negatively charged the way most #bacteria are.

I'm thinking that what I've been calling tubes might be what other people call "safety pins". Apparently that's what Bukholderia are supposed to look like.

I'm getting better at staining. This is a sample from the bottom of the jar stained with aqueous methylene blue. I think maybe I can see two #flagella coming off one of the cells in the middle.

There's also one of the tube things in the middle there. It's interesting that the tubes don't stain. That would suggest they're not negatively charged the way most #bacteria are.

I'm thinking that what I've been calling tubes might be what other people call "safety pins". Apparently that's what Bukholderia are supposed to look like.

Beautiful #cryoET paper on choanoflagellate #flagella #cilia revealing the enigmatic ciliary vane, new components and similarities to animal cilia
#protist #evolution #EM #choanoflagellate
https://elifesciences.org/articles/78133

Beautiful #cryoET paper on choanoflagellate #flagella #cilia revealing the enigmatic ciliary vane, new components and similarities to animal cilia
#protist #evolution #EM #choanoflagellate
https://elifesciences.org/articles/78133

Happy #FluorescentFriday folks! Because everything seems a little dark on the otherside, we are sharing some color-tastic eye-popping pics to kick off the week-end.... #cilia #flagella #MicroscopeMagic #TubulinCode

Happy #FluorescentFriday folks! Because everything seems a little dark on the otherside, we are sharing some color-tastic eye-popping pics to kick off the week-end.... #cilia #flagella #MicroscopeMagic #TubulinCode

@Mill_lab

Pleasantine, this would be great - but: the group was somehow generated automatically - I can't edit the intro 🙁

So we have to keep on mentioning @cilia and adding the hashtags in our "toots". :happy:

#cilia #biology #centriole #developmentalbiology #devbiol #ciliopathy #raredisease #ADPKD #BBS #PCD #flagella #cysts #kidney
#coolestorganelleontheplanet #Ciliverse