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Sheila Roitman

@sheilaroitman.bsky.social

Moving from Sci-Fi to Science ๐Ÿ”ฌ๐Ÿ“š๐Ÿชด๐Ÿคฟ๐Ÿ•๏ธ๐Ÿ‡ฆ๐Ÿ‡ท ๐Ÿ‡ฎ๐Ÿ‡ฑ Post-doc at WeigelWorld ๐Ÿ‡ฉ๐Ÿ‡ช, Plants & microbes Past: PhD at Beja Lab, Marine microbiology

433 Followers  |  560 Following  |  64 Posts  |  Joined: 19.11.2024  |  2.1433

Latest posts by sheilaroitman.bsky.social on Bluesky

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...

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 donโ€™t secrete toxins โ€” they inject them using phage-derived machines called extracellular contractile injection systems (eCISs).

26.01.2026 13:26 โ€” ๐Ÿ‘ 39    ๐Ÿ” 26    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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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...

Phycocyanobilin biosynthesis in Galdieria sulphuraria requires isomerization of phycoerythrobilin synthesized by bilin reductases febs.onlinelibrary.wiley.com/doi/10.1111/...

13.01.2026 13:05 โ€” ๐Ÿ‘ 1    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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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 ๐Ÿค—๐Ÿฅผโš—๏ธ๐Ÿงช
www.weizmann.ac.il/plants/voichek

11.01.2026 20:41 โ€” ๐Ÿ‘ 45    ๐Ÿ” 31    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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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/...

08.01.2026 10:59 โ€” ๐Ÿ‘ 45    ๐Ÿ” 15    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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Postdoctoral Researcher in discovering the benefits of plant growth-promoting bacteriophages Postdoctoral Researcher in discovering the benefits of plant growth-promoting bacteriophages

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.

29.12.2025 06:28 โ€” ๐Ÿ‘ 30    ๐Ÿ” 35    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Oh Josie, when you want someone who is always imagining the worse just come to me

14.12.2025 10:38 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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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.

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...

09.12.2025 09:00 โ€” ๐Ÿ‘ 9    ๐Ÿ” 6    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Causality?

06.12.2025 16:11 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

But do not despair, soon our dissident political leaders will also be prosecuted, and you will remember too ๐Ÿ˜…

06.12.2025 11:18 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

People in the southern hemisphere do

06.12.2025 11:16 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

AI people here don't speak about anything else (for days now)

02.12.2025 16:28 โ€” ๐Ÿ‘ 2    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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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...

30.11.2025 05:28 โ€” ๐Ÿ‘ 9    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

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...

25.11.2025 14:54 โ€” ๐Ÿ‘ 6    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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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...

1/5
๐Ÿšจ๐Ÿšจ preprint alert! ๐Ÿšจ๐Ÿšจ
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 ๐Ÿชธ) but not in other animals.
www.biorxiv.org/content/10.1...

25.11.2025 12:06 โ€” ๐Ÿ‘ 34    ๐Ÿ” 10    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1
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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

21.11.2025 09:46 โ€” ๐Ÿ‘ 14    ๐Ÿ” 7    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

That curly jellyfish was incredible

21.11.2025 18:18 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Livestream?

21.11.2025 17:35 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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@honour.bsky.social casually having a snack while presenting her work on Ralstonia wars. As nonchalant as it gets ๐Ÿ˜Ž

21.11.2025 14:58 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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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.

Nature research paper: Viral NblA proteins negatively affect oceanic cyanobacterial photosynthesis

go.nature.com/3JKJofG

13.11.2025 18:49 โ€” ๐Ÿ‘ 19    ๐Ÿ” 4    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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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

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

12.11.2025 16:00 โ€” ๐Ÿ‘ 44    ๐Ÿ” 27    ๐Ÿ’ฌ 9    ๐Ÿ“Œ 2
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Call for Applications for the Azrieli International Postdoctoral Fellowship-2026-27 - The Azrieli Foundation

Call for Applications for the Azrieli International Postdoctoral Fellowship-2026-27 azrielifoundation.org/azrieli-fell...

09.11.2025 08:29 โ€” ๐Ÿ‘ 4    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Me too! ๐Ÿ˜…๐Ÿ˜…

07.11.2025 12:08 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Jumbo phageโ€“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...

@prczhaoyansong.bsky.socialโ€™s deep dive into the dark matter of compost communities is now out ๐ŸŽ‰ Genomic islands hijack jumbo phagesโ€”whose capsids enable transfer of large tracts of DNAโ€”shedding new light on the scale & scope of phage-mediated gene flow ๐Ÿ˜Ž

www.pnas.org/doi/10.1073/...

28.10.2025 18:36 โ€” ๐Ÿ‘ 71    ๐Ÿ” 46    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 2

Having a PhD means you can find the word โ€œunfortunatelyโ€ in an email faster that the search function

28.10.2025 03:58 โ€” ๐Ÿ‘ 393    ๐Ÿ” 41    ๐Ÿ’ฌ 8    ๐Ÿ“Œ 4
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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...

27.10.2025 17:53 โ€” ๐Ÿ‘ 62    ๐Ÿ” 34    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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q.e.d Science Critical Thinking AI for constructive criticism and science evaluation

Here's the link to the system, try it! qedscience.com
@qedscience.bsky.social

15.10.2025 12:22 โ€” ๐Ÿ‘ 203    ๐Ÿ” 66    ๐Ÿ’ฌ 17    ๐Ÿ“Œ 16
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 Jรผlich foc...

Please RT:
We have an opening for a junior group leader position in โ€žPhage Biology & Biotechnologyโ€œ.
www.fz-juelich.de/de/karriere/...

Interested candidates are encouraged to contact me via email for further details.

@spp2330.bsky.social; @mibinet.bsky.social

08.10.2025 06:50 โ€” ๐Ÿ‘ 35    ๐Ÿ” 57    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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ืขื‘ื•ืจื™ ื–ื” ืœื ืขืจื‘ ื—ื’. ื–ื” ืขื•ื“ ืขืจื‘ ื›ื•ืื‘ ืฉืœ ื”ืžืชื ื” ืœืงืจื™ืื” ืœื‘ื•ื ืœืืกื•ืฃ ืืช ืื™ืชืŸ | ื“ืขื” "ืื™ืš ื”ื”ืจื’ืฉื” ื‘ืขืจื‘ ื—ื’ ื ื•ืกืฃ ื‘ื• ื‘ื ืš ืขื“ื™ืŸ ื‘ืฉื‘ื™?". ื›ืš ื ืคืชื— ื›ืœ ืจืื™ื•ืŸ ื‘ืฉื‘ื•ืข ื”ืื—ืจื•ืŸ. ืื– ืืœื• ื”ืŸ ื”ืžื—ืฉื‘ื•ืช ื‘ืขืจื‘ ื”ืฉื ื” ื”ื—ื“ืฉื” ื•ื‘ืคืชื—ื• ืฉืœ ืฉื‘ื•ืข ื ื•ืกืฃ ืฉืœ ืคื—ื“, ื›ืื‘ ื•ื’ืขื’ื•ืข ืœื‘ื ื™ ื”ืฆืขื™ืจ

www.haaretz.co.il/opinions/202...

22.09.2025 08:06 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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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...

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! ๐Ÿงช๐Ÿชธ๐Ÿฆ ๐Ÿงฌ๐Ÿ–ฅ๏ธ

16.09.2025 01:49 โ€” ๐Ÿ‘ 21    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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v2. Evidence for the acquisition of a proteorhodopsin-like rhodopsin by a chrysophyte-infecting giant virus www.biorxiv.org/content/10.1...

15.09.2025 11:20 โ€” ๐Ÿ‘ 4    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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