Andrés Guillén Samander
@aguillensamander.bsky.social
92 followers 160 following 3 posts
🇵🇪 EMBO Postdoctoral Fellow @BNITM in Hamburg studying interorganelle communication in Malaria parasites
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Reposted by Andrés Guillén Samander
rhyswg.bsky.social
The outer membrane of Gram-negative bacteria blocks many antibiotics. Our latest work reveals that L-type pyocins bypass this barrier by inactivating the BAM complex, killing Pseudomonas aeruginosa without entering the cell, providing a new blueprint for beating antibiotic resistance.
A Protein Antibiotic Inhibits the BAM Complex to Kill Without Cell Entry
Many antibiotics are ineffective against Gram-negative pathogens such as Pseudomonas aeruginosa because they cannot penetrate the bacterial outer membrane. Here, we show that protein antibiotics calle...
www.biorxiv.org
Reposted by Andrés Guillén Samander
mike-hanna.bsky.social
New paper alert! I’m very excited to share our paper published in @embojournal.org! @pdc-lab.bsky.social @yaleneuro.bsky.social
embojournal.org
Bridge-like lipid transfer protein 3A (BLTP3A) participates in endomembrane repair as an effector of #ATG8 conjugation to single membranes (CASM) - helping repair or minimize #lysosome damage
@mike-hanna.bsky.social et al, @pdc-lab.bsky.social
www.embopress.org/doi/full/10....
Reposted by Andrés Guillén Samander
jcb.org
Rodriguez Salazar, @caglaeroglu.bsky.social et al. @dukehealth.bsky.social show that Drp1-mediated mitochondrial fission is necessary for peripheral #astrocyte process formation. Loss of Drp1 induces astrocyte reactivity & disrupts cortical astrocyte organization rupress.org/jcb/article/...
Reposted by Andrés Guillén Samander
jcb.org
@anbangdai.bsky.social et al. @pdc-lab.bsky.social report the localization of BLTP2 in different human cell types & reveal binding partners that mediate its tethering to the PM & to PM-connected structures including certain #endosomes & #macropinosomes undergoing fusion rupress.org/jcb/article/...
Reposted by Andrés Guillén Samander
madic.bsky.social
New preprint: In situ Architecture of #Plasmodesmata.

Using #cryoET, #AlphaFold & proteomics, we uncover the native organization of plant intercellular nanopores.

🔗 doi.org/10.1101/2025...

🧪🧵1/n
#teamtomo #PlantScience #Physcomitrium #Arabidopsis #cryoEM
aguillensamander.bsky.social
Thank you Mike! Happy that you liked it. BBE<3
aguillensamander.bsky.social
One for the Apicomplexa peeps:
ever wonder how does the IMC grow so fast during progeny formation? Where do all the lipids come from? In our latest work on malaria RBC stages we implicate this monster protein (~6000 residues!) and ER contact sites.
Happy+proud to share and keen to hear thoughts!
Reposted by Andrés Guillén Samander
womeninmalaria.bsky.social
📢 The Preliminary Programme for the 2nd WiM Online Conference is out 🥳 🎉

The Early Bird Registration closes Feb 14 2025, 23.59 UTC (50 USD). Fee waivers are available for LMICs & you can also buy fee waivers or donate. Register and apply/donate: womeninmalaria.es/wim-conferen... 💙💛 Please share!
Reposted by Andrés Guillén Samander
haniehfalahati.bsky.social
Our paper is out just in time for #EM_Monday! It is about a specialized neuron-specific ER, called the spine apparatus, which is found close to synapses and has a very peculiar shape. If you think neurons are special, the spine apparatus is their🦄 horn! But how does it form?!
doi.org/10.1016/j.cu...
Gif showing a spine containing spine apparatus, reconstructed from FIB-SEM images. ER: red, synapse: yellow, plasma membrane: blue