Lmst

As we* hoped, my co-authored #marine GDGT « cookbook » #review #paper (https://doi.org/10.5194/egusphere-2025-1467) was accepted for publication in the @EuroGeosciences #journal #Biogeosciences after peer-review and (minor) revision! 🥳 🍾
*Peter Bijl, Kasia Sliwinska, and all co-authors, including myself.
#Science
#ScienceMastodon
#AcademicMastodon
#PaperAccepted
#GDGTs #isoGDGTs #brGDGTs #TeamArchaea #TeamBacteria
#archaeal #bacterial #tetraether #lipids

Title and author list of the online preprint by Bijl and Sliwinska et al. (submitted to Biogeosciences) EGUsphere (https://doi.org/10.5194/egusphere-2025-1467) entitled "Reviews and syntheses: Best practices for the application of marine GDGTs as proxy for paleotemperatures: sampling, processing, analyses, interpretation, and archiving protocols", with a note which reads "Revised manuscript accepted for BG"—"BG" stands for "Biogeosciences"—and the co-editor-in-chief’s comment which reads "This publication provides a comprehensive review of the use of GDGTs (Glycerol Dialkyl Glycerol Tetraethers) for reconstructing past temperatures, with a particular focus on marine applications. It covers the full research workflow — from sample collection and processing to analytical methodologies, data interpretation, and data archiving. Importantly, the authors highlight best practices and propose recommendations to standardize approaches across the field. This review therefore serves as a valuable reference for both the paleoclimatology and organic geochemistry communities.". Screenshot taken on 26 September 2025 by Nina Davtian (that's me!) from the following website: https://bg.copernicus.org/preprints/preprints.html

Four weeks ago, my first co-authored @EuroGeosciences #preprint « #Reviews and syntheses: Best practices for the application of #marine #GDGTs as proxy for paleotemperatures: sampling, processing, analyses, interpretation, and archiving protocols » went online!
https://doi.org/10.5194/egusphere-2025-1467
#Science #ScienceMastodon #AcademicMastodon
#Review #Consensus
#EGUsphere
#isoGDGTs #brGDGTs #TeamArchaea #TeamBacteria
#archaeal #bacterial #tetraether #lipids
(1/2)

Nina Davtian (that's me!) at her work office, with the laptop screen showing the header of her co-authored preprint by Bijl and Sliwinska et al. (submitted to Biogeosciences) EGUsphere (https://doi.org/10.5194/egusphere-2025-1467) with her name highlighted in the author list. Nina is holding a mug on which the text reads « 2nd international GDGT workshop September 2023, Zürich ».

The last #scientific #publication from Devika Varma’s #PhD #thesis at @NIOZnieuws (https://www.nioz.nl/en/news/investigating-paleotemperature-proxies-based-on-archaeal-hydroxylated-tetraether-lipids) is now published in #OrganicGeochemistry:
https://doi.org/10.1016/j.orggeochem.2025.105010
Many thanks to Isla Castañeda for the invitation to review this paper—yes, I signed the review report.
#Science #ScienceMastodon #AcademicMastodon
#GDGTs #isoGDGTs #TeamArchaea
#Archaeal #tetraether #lipids

On this #InternationalWomensDay, let me highlight two #WomenInSTEM.
First, Amy Cromartie, who leads the following @EuroGeosciences #preprint:
https://egusphere.copernicus.org/preprints/2025/egusphere-2025-526/
Second, Devika Varma, who recently defended her #PhD #thesis. Her PhD work at @NIOZnieuws aimed to investigate #paleotemperature indicators based on #archaeal hydroxylated #tetraether #lipids (OH-isoGDGTs):
https://www.nioz.nl/en/news/investigating-paleotemperature-proxies-based-on-archaeal-hydroxylated-tetraether-lipids
#IWD #IWD25 #IWD2025
#Science #ScienceMastodon #AcademicMastodon
#GDGTs #brGDGTs #isoGDGTs
(1/3)

Announcement of #BactoGre 27 May - #bacteriology in #Grenoble meeting of #microbiologists focusing on #bacterial and #archaeal organisms and communities.

Registration is free but mandatory
https://forms.gle/nDi25ogQbdBP3yvQ7

submissions close 25 April,
registration 16 May

Invited speakers:
#CatherineLarose, "Institut des Géosciences de l’Environnement", Grenoble
#SamMeyer, "Microbiologie, Adaptation et Pathogénie", Lyon

Organisers: Sylvie Elsen, Pierre Marcoux and Sophie Abby

BactoGre Journée de Microbiologie de Grenoble

“Microbiologie moleculaire, structurale et évolutive, biophysique et applications"

27 mai 2025, Auditorium de I'MAG, Université Grenoble Alpes

Contrary to current orthodoxy, #archaeal #membrane mimics are more permeable to core metabolites than #bacterial #lipid membrane mimics, informing some of the earliest transitions in cell evolution @Ula_Lapinska @AncestralState @PagliaraExeter #PLOSBiology https://plos.io/3Kxa15c

Tandem repeats in giant #archaeal #Borg elements undergo rapid #evolution and create new intrinsically disordered regions in #proteins | PLOS #Biology

https://plos.io/3Y0cw3R

Parks DH, Chuvochina M, Rinke C, et al (2022) GTDB: an ongoing census of #bacterial and #archaeal #diversity through a phylogenetically consistent, rank normalized and complete genome-based taxonomy. Nucleic Acids Research 50:D785–D794. https://doi.org/10.1093/nar/gkab776

#eukaryotes Story of its #Archaeal Ancestry |. The traditional grouping of life forms into #prokaryotes and eukaryotes was revised in 1977 when rRNA sequence characterisation revealed that #archaea (then called ‘archaebacteria’) are ‘‘as distantly related to #bacteria as bacteria are to eukaryotes.‘’ T....

https://www.scientificeuropean.co.uk/sciences/biology/eukaryotes-story-of-its-archaeal-ancestry/

#Metagenomics exploration of the diversity of #archaeal #viruses in the human gut.

New research in Nature Communication on:

https://www.nature.com/articles/s41467-022-35735-y

#archaea #microbiology #microbiomes #biodiversity

New #cryoET structure from LSI Exeter colleagues Matthew Gaines et al. Bertram Daum lab, this time of the enigmatic #archaeal filament called 'thread'.

What I find cool about this work is that first they had the structure, then found the sequence based on glycosylation sites and bulky residues.
This #protein was also so ultra-stable, that resisted trypsinisation, so mass spec was not an option to identify it.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9715654/

#archaeal

Client Info