Sheila Roitman
@sheilaroitman.bsky.social
Moving from Sci-Fi to Science 🔬📚🪴🤿🏕️🇦🇷 🇮🇱
Post-doc at WeigelWorld 🇩🇪, Plants & microbes
Past: PhD at Beja Lab, Marine microbiology
Post-doc at WeigelWorld 🇩🇪, Plants & microbes
Past: PhD at Beja Lab, Marine microbiology
Reposted by Sheila Roitman
A new paper from the lab on virus-like particles called eCISs www.nature.com/articles/s41...
How bacteria evolved thousands of precision nanoinjectors?
Some bacteria don’t secrete toxins — they inject them using phage-derived machines called extracellular contractile injection systems (eCISs).
How bacteria evolved thousands of precision nanoinjectors?
Some bacteria don’t secrete toxins — they inject them using phage-derived machines called extracellular contractile injection systems (eCISs).
A comprehensive catalogue of receptor-binding domains in extracellular contractile injection systems - Nature Communications
Extracellular contractile injection systems (eCISs) are bacteriophage tail-derived toxin delivery complexes that are present in many prokaryotes. Here, the authors present an analysis of eCIS tail fib...
www.nature.com
January 26, 2026 at 1:26 PM
A new paper from the lab on virus-like particles called eCISs www.nature.com/articles/s41...
How bacteria evolved thousands of precision nanoinjectors?
Some bacteria don’t secrete toxins — they inject them using phage-derived machines called extracellular contractile injection systems (eCISs).
How bacteria evolved thousands of precision nanoinjectors?
Some bacteria don’t secrete toxins — they inject them using phage-derived machines called extracellular contractile injection systems (eCISs).
Reposted by Sheila Roitman
Phycocyanobilin biosynthesis in Galdieria sulphuraria requires isomerization of phycoerythrobilin synthesized by bilin reductases febs.onlinelibrary.wiley.com/doi/10.1111/...
FEBS Press
The biosynthesis of bilins, tetrapyrroles essential for light harvesting and sensing, is performed by specific enzymes (FDBRs). In Galdieria sulphuraria, both phycobiliprotein types bind phycocyanobi...
febs.onlinelibrary.wiley.com
January 13, 2026 at 1:05 PM
Phycocyanobilin biosynthesis in Galdieria sulphuraria requires isomerization of phycoerythrobilin synthesized by bilin reductases febs.onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Sheila Roitman
The (Yoav) Voichek lab has opened its gates at the Weizmann Institute, and is actively recruiting students and researchers at all levels - come explore gene regulation and computational genomics in a fun, friendly sprouting lab 🤗🥼⚗️🧪
www.weizmann.ac.il/plants/voichek
www.weizmann.ac.il/plants/voichek
January 11, 2026 at 8:41 PM
The (Yoav) Voichek lab has opened its gates at the Weizmann Institute, and is actively recruiting students and researchers at all levels - come explore gene regulation and computational genomics in a fun, friendly sprouting lab 🤗🥼⚗️🧪
www.weizmann.ac.il/plants/voichek
www.weizmann.ac.il/plants/voichek
Reposted by Sheila Roitman
Out after peer review, led by @shanshanwang3.bsky.social.
Gating of immune responses in Arabidopsis mesophyll cells: after initial response, immune gene expression stays hi in some cells, while during PTI other cells reinitiate a growth-related program.
nph.onlinelibrary.wiley.com/doi/10.1111/...
Gating of immune responses in Arabidopsis mesophyll cells: after initial response, immune gene expression stays hi in some cells, while during PTI other cells reinitiate a growth-related program.
nph.onlinelibrary.wiley.com/doi/10.1111/...
January 8, 2026 at 10:59 AM
Out after peer review, led by @shanshanwang3.bsky.social.
Gating of immune responses in Arabidopsis mesophyll cells: after initial response, immune gene expression stays hi in some cells, while during PTI other cells reinitiate a growth-related program.
nph.onlinelibrary.wiley.com/doi/10.1111/...
Gating of immune responses in Arabidopsis mesophyll cells: after initial response, immune gene expression stays hi in some cells, while during PTI other cells reinitiate a growth-related program.
nph.onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Sheila Roitman
A four-year postdoc focusing on "plant growth-promoting bacteriophages" available in my group. Skills in metaviromics and metagenomics essential. Application deadline: 2.2.2026. For more info, see the link.
Postdoctoral Researcher in discovering the benefits of plant growth-promoting bacteriophages
Postdoctoral Researcher in discovering the benefits of plant growth-promoting bacteriophages
jobs.helsinki.fi
December 29, 2025 at 6:29 AM
A four-year postdoc focusing on "plant growth-promoting bacteriophages" available in my group. Skills in metaviromics and metagenomics essential. Application deadline: 2.2.2026. For more info, see the link.
Reposted by Sheila Roitman
This is such a cool paper as it experimentally addresses the role of the auxiliary metabolic gene nblA in cyanophages showing a large benefit of NblA to the cyanophage and a negative effect on the host photosynthetic apparatus and host photosynthesis
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis - Nature
Viral NblA accelerates the cyanophage infection cycle, directs degradation of the host phycobilisome and other proteins, and reduces host photosynthetic light-harvesting efficiency.
www.nature.com
December 9, 2025 at 9:00 AM
This is such a cool paper as it experimentally addresses the role of the auxiliary metabolic gene nblA in cyanophages showing a large benefit of NblA to the cyanophage and a negative effect on the host photosynthetic apparatus and host photosynthesis
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Sheila Roitman
Spectral tuning and signaling of diverse and most red sensitive visual rhodopsins that drive high colour discrimination in Mantis Shrimp eyes www.biorxiv.org/content/10.1...
November 30, 2025 at 5:29 AM
Spectral tuning and signaling of diverse and most red sensitive visual rhodopsins that drive high colour discrimination in Mantis Shrimp eyes www.biorxiv.org/content/10.1...
Reposted by Sheila Roitman
2 days left to apply for a fully funded MIBTP Phd project with me at the School of Life Sciences @warwicklifesci.bsky.social at Warwick. We will do viral functional metagenomics and other cool techniques.
Check out the details and apply in the link below
warwick.ac.uk/fac/cross_fa...
Check out the details and apply in the link below
warwick.ac.uk/fac/cross_fa...
November 25, 2025 at 2:54 PM
2 days left to apply for a fully funded MIBTP Phd project with me at the School of Life Sciences @warwicklifesci.bsky.social at Warwick. We will do viral functional metagenomics and other cool techniques.
Check out the details and apply in the link below
warwick.ac.uk/fac/cross_fa...
Check out the details and apply in the link below
warwick.ac.uk/fac/cross_fa...
Reposted by Sheila Roitman
1/5
🚨🚨 preprint alert! 🚨🚨
I wish to introduce CARDIB, not the singer, but the protein.
CARDIB=CARD Inhibitory Binding protein.
In our new work we discover this antiviral protein that is found in all Anthozoa (sea anemones and corals 🪸) but not in other animals.
www.biorxiv.org/content/10.1...
🚨🚨 preprint alert! 🚨🚨
I wish to introduce CARDIB, not the singer, but the protein.
CARDIB=CARD Inhibitory Binding protein.
In our new work we discover this antiviral protein that is found in all Anthozoa (sea anemones and corals 🪸) but not in other animals.
www.biorxiv.org/content/10.1...
An ancient anthozoan protein reveals an alternative evolutionary path of antiviral signaling
How antiviral immunity first arose in animals is a central question in evolutionary biology. Using the sea anemone Nematostella vectensis, we identify CARDIB, a previously uncharacterized gene located...
www.biorxiv.org
November 25, 2025 at 12:06 PM
1/5
🚨🚨 preprint alert! 🚨🚨
I wish to introduce CARDIB, not the singer, but the protein.
CARDIB=CARD Inhibitory Binding protein.
In our new work we discover this antiviral protein that is found in all Anthozoa (sea anemones and corals 🪸) but not in other animals.
www.biorxiv.org/content/10.1...
🚨🚨 preprint alert! 🚨🚨
I wish to introduce CARDIB, not the singer, but the protein.
CARDIB=CARD Inhibitory Binding protein.
In our new work we discover this antiviral protein that is found in all Anthozoa (sea anemones and corals 🪸) but not in other animals.
www.biorxiv.org/content/10.1...
Reposted by Sheila Roitman
Today's dive site, to ~2,200m. We will be streaming 9am-3pm Central. At www.youtube.com/@SchmidtOcean
#AsgardArchaea
@schmidtocean.bsky.social
@moorefound.bsky.social
@texasscience.bsky.social
@utmsi.bsky.social
#AsgardArchaea
@schmidtocean.bsky.social
@moorefound.bsky.social
@texasscience.bsky.social
@utmsi.bsky.social
November 21, 2025 at 9:46 AM
Today's dive site, to ~2,200m. We will be streaming 9am-3pm Central. At www.youtube.com/@SchmidtOcean
#AsgardArchaea
@schmidtocean.bsky.social
@moorefound.bsky.social
@texasscience.bsky.social
@utmsi.bsky.social
#AsgardArchaea
@schmidtocean.bsky.social
@moorefound.bsky.social
@texasscience.bsky.social
@utmsi.bsky.social
@honour.bsky.social casually having a snack while presenting her work on Ralstonia wars. As nonchalant as it gets 😎
November 21, 2025 at 2:58 PM
@honour.bsky.social casually having a snack while presenting her work on Ralstonia wars. As nonchalant as it gets 😎
Reposted by Sheila Roitman
Nature research paper: Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis
go.nature.com/3JKJofG
go.nature.com/3JKJofG
Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis - Nature
Viral NblA accelerates the cyanophage infection cycle, directs degradation of the host phycobilisome and other proteins, and reduces host photosynthetic light-harvesting efficiency.
go.nature.com
November 13, 2025 at 6:49 PM
Nature research paper: Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis
go.nature.com/3JKJofG
go.nature.com/3JKJofG
Reposted by Sheila Roitman
Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis www.nature.com/articles/s41...
this project was led by @omernadel.bsky.social and is a joint work between the labs of @bejalab.bsky.social, Debbie Lindell and Oded Kleifeld from @biologytechnion.bsky.social
this project was led by @omernadel.bsky.social and is a joint work between the labs of @bejalab.bsky.social, Debbie Lindell and Oded Kleifeld from @biologytechnion.bsky.social
the sun is shining through the clouds in the sky above the ocean
ALT: the sun is shining through the clouds in the sky above the ocean
media.tenor.com
November 12, 2025 at 4:00 PM
Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis www.nature.com/articles/s41...
this project was led by @omernadel.bsky.social and is a joint work between the labs of @bejalab.bsky.social, Debbie Lindell and Oded Kleifeld from @biologytechnion.bsky.social
this project was led by @omernadel.bsky.social and is a joint work between the labs of @bejalab.bsky.social, Debbie Lindell and Oded Kleifeld from @biologytechnion.bsky.social
Reposted by Sheila Roitman
Call for Applications for the Azrieli International Postdoctoral Fellowship-2026-27 azrielifoundation.org/azrieli-fell...
Call for Applications for the Azrieli International Postdoctoral Fellowship-2026-27 - The Azrieli Foundation
azrielifoundation.org
November 9, 2025 at 8:30 AM
Call for Applications for the Azrieli International Postdoctoral Fellowship-2026-27 azrielifoundation.org/azrieli-fell...
Reposted by Sheila Roitman
@prczhaoyansong.bsky.social’s deep dive into the dark matter of compost communities is now out 🎉 Genomic islands hijack jumbo phages—whose capsids enable transfer of large tracts of DNA—shedding new light on the scale & scope of phage-mediated gene flow 😎
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Jumbo phage–mediated transduction of genomic islands | PNAS
Bacteria acquire new genes by horizontal gene transfer, typically mediated by mobile
genetic elements (MGEs). While plasmids, bacteriophages, and c...
www.pnas.org
October 28, 2025 at 6:36 PM
@prczhaoyansong.bsky.social’s deep dive into the dark matter of compost communities is now out 🎉 Genomic islands hijack jumbo phages—whose capsids enable transfer of large tracts of DNA—shedding new light on the scale & scope of phage-mediated gene flow 😎
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Reposted by Sheila Roitman
Having a PhD means you can find the word “unfortunately” in an email faster that the search function
October 28, 2025 at 3:58 AM
Having a PhD means you can find the word “unfortunately” in an email faster that the search function
Reposted by Sheila Roitman
1/2 Want to become up to date with pangenomes and genome graphs and their history? Check out this fantastic review by @zbao.bsky.social!
Complexity welcome: Pangenome graphs for comprehensive population genomics
#pangenomes #plantscience #genomegraphs
www.cambridge.org/core/journal...
Complexity welcome: Pangenome graphs for comprehensive population genomics
#pangenomes #plantscience #genomegraphs
www.cambridge.org/core/journal...
October 27, 2025 at 5:53 PM
1/2 Want to become up to date with pangenomes and genome graphs and their history? Check out this fantastic review by @zbao.bsky.social!
Complexity welcome: Pangenome graphs for comprehensive population genomics
#pangenomes #plantscience #genomegraphs
www.cambridge.org/core/journal...
Complexity welcome: Pangenome graphs for comprehensive population genomics
#pangenomes #plantscience #genomegraphs
www.cambridge.org/core/journal...
Reposted by Sheila Roitman
q.e.d Science
Critical Thinking AI for constructive criticism and science evaluation
qedscience.com
October 15, 2025 at 12:22 PM
Reposted by Sheila Roitman
Please RT:
We have an opening for a junior group leader position in „Phage Biology & Biotechnology“.
www.fz-juelich.de/de/karriere/...
Interested candidates are encouraged to contact me via email for further details.
@spp2330.bsky.social; @mibinet.bsky.social
We have an opening for a junior group leader position in „Phage Biology & Biotechnology“.
www.fz-juelich.de/de/karriere/...
Interested candidates are encouraged to contact me via email for further details.
@spp2330.bsky.social; @mibinet.bsky.social
Junior Group Leader - Phage Biology & Biotechnology
As a leading research institution for microbial biotechnology the Institute of Bio- and Geosciences - Biotechnology (IBG-1, https://www.fz-juelich.de/de/ibg/ibg-1 ) at the Forschungszentrum Jülich foc...
www.fz-juelich.de
October 8, 2025 at 6:50 AM
Please RT:
We have an opening for a junior group leader position in „Phage Biology & Biotechnology“.
www.fz-juelich.de/de/karriere/...
Interested candidates are encouraged to contact me via email for further details.
@spp2330.bsky.social; @mibinet.bsky.social
We have an opening for a junior group leader position in „Phage Biology & Biotechnology“.
www.fz-juelich.de/de/karriere/...
Interested candidates are encouraged to contact me via email for further details.
@spp2330.bsky.social; @mibinet.bsky.social
Reposted by Sheila Roitman
Looking forward to attending and presenting on
"coral bacterial pangenomes in the Anthropocene: at this conference in beautiful Valencia, Spain www.alocongress.com/pangenome2025 Join us! 🧪🪸🦠🧬🖥️
"coral bacterial pangenomes in the Anthropocene: at this conference in beautiful Valencia, Spain www.alocongress.com/pangenome2025 Join us! 🧪🪸🦠🧬🖥️
PANGENOME2025
The biology of prokaryotic cells is directly dependent on the differential gene pools that characterize each cell or strain. This has been a fundamental aspect of epidemiology for delimiting outbreaks...
www.alocongress.com
September 16, 2025 at 1:49 AM
Looking forward to attending and presenting on
"coral bacterial pangenomes in the Anthropocene: at this conference in beautiful Valencia, Spain www.alocongress.com/pangenome2025 Join us! 🧪🪸🦠🧬🖥️
"coral bacterial pangenomes in the Anthropocene: at this conference in beautiful Valencia, Spain www.alocongress.com/pangenome2025 Join us! 🧪🪸🦠🧬🖥️
Reposted by Sheila Roitman
v2. Evidence for the acquisition of a proteorhodopsin-like rhodopsin by a chrysophyte-infecting giant virus www.biorxiv.org/content/10.1...
September 15, 2025 at 11:20 AM
v2. Evidence for the acquisition of a proteorhodopsin-like rhodopsin by a chrysophyte-infecting giant virus www.biorxiv.org/content/10.1...
Reposted by Sheila Roitman
New tool for clustering bacterial genomes: PanGene-O-Meter, provides a higher level of granularity than ANI when classifying bacterial isolates of the same species. Work of the talented @haimashkenazy.bsky.social
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
September 2, 2025 at 8:29 PM
New tool for clustering bacterial genomes: PanGene-O-Meter, provides a higher level of granularity than ANI when classifying bacterial isolates of the same species. Work of the talented @haimashkenazy.bsky.social
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
How diverse are the individual strains within your species?
How broad is their Pangenome?
How will you choose representatives from the whole collection?
Look no further! PanGene-O-Meter is here for you!
From @haimashkenazy.bsky.social @plantevolution.bsky.social
www.biorxiv.org/content/10.1...
How broad is their Pangenome?
How will you choose representatives from the whole collection?
Look no further! PanGene-O-Meter is here for you!
From @haimashkenazy.bsky.social @plantevolution.bsky.social
www.biorxiv.org/content/10.1...
PanGene-O-Meter: Intra-Species Diversity Based on Gene-Content
Bacterial genome evolution is shaped to a great extent by horizontal gene transfer, detectable as genes with a presence-absence pattern of variation that does not follow phylogenetic relationships acr...
www.biorxiv.org
September 2, 2025 at 7:20 AM
How diverse are the individual strains within your species?
How broad is their Pangenome?
How will you choose representatives from the whole collection?
Look no further! PanGene-O-Meter is here for you!
From @haimashkenazy.bsky.social @plantevolution.bsky.social
www.biorxiv.org/content/10.1...
How broad is their Pangenome?
How will you choose representatives from the whole collection?
Look no further! PanGene-O-Meter is here for you!
From @haimashkenazy.bsky.social @plantevolution.bsky.social
www.biorxiv.org/content/10.1...