Author

J.-M. Alempic

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Microbiology· 7 Evolutionary Biology· 1

Signature Assays, Organisms & Methods

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Approach:experimental assay· 6 Research Focus:cell type annotation· 5 Assay:proteomics· 4 Research Focus:chromatin & epigenetic regulation· 2 Assay:DNA methylation· 2 Research Focus:gene regulatory network inference· 2 Research Focus:host-pathogen & immune response· 2 Approach:statistical model· 2

Frequent Co-Authors

C. Abergel· 8 shared A. Lartigue· 7 shared M. Legendre· 6 shared J.-M. Claverie· 5 shared Y. Coute· 5 shared N. Philippe· 4 shared O. Poirot· 4 shared S. Jeudy· 4 shared

Activity by Year

2018-2023 · peak 3/yr

Co-Author Collaboration Network

10 top collaborators · 45 mutual co-author links

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8 shared papersMicrobiology

C. Abergel

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Author profile →

8 papers

Recent·Most cited

Functional redundancy revealed by the deletion of the mimivirus GMC-oxidoreductase genes

J.-M. Alempic, H. Bisio, A. Villalta, S. Santini, A. Lartigue, A. Schmitt, C. Bugnot, A. Notaro, L. BELMUDES, A. Adrait, O. Poirot, D. Ptchelkine, C. De Castro, Y. Coute, C. Abergel

The study shows that deleting GMC-oxidoreductase genes in mimiviruses does not impair genomic fiber or fibril layer formation, indicating functional redundancy.

bioRxiv · Apr 28, 2023Microbiology

An update on eukaryotic viruses revived from ancient permafrost

J.-M. Alempic, A. Lartigue, A. E. Goncharov, G. Grosse, J. Strauss, A. N. Tikhonov, A. N. Fedorov, O. Poirot, M. Legendre, S. Santini, C. Abergel, J.-M. Claverie

The paper reports the isolation and characterization of 13 new viruses from ancient permafrost samples, highlighting their potential to challenge assumptions about the rarity of revived viruses.

bioRxiv · Nov 10, 2022Microbiology

Evolution of giant pandoravirus from small icosahedral viruses revealed by CRISPR/Cas9

H. Bisio, M. Legendre, C. Giry, N. Philippe, J.-M. Alempic, S. Jeudy, C. Abergel

The paper uses CRISPR/Cas9 to genetically modify giant viruses and their host, revealing evolutionary transitions from small icosahedral viruses to larger amphora-shaped viruses.

bioRxiv · Aug 18, 2022 · PreprintMicrobiology

The giant Mimivirus 1.2 Mb genome is elegantly organized into a 30 nm helical protein shield

A. Villalta, A. Schmitt, L. F. Estrozi, E. R. J. Quemin, A. Lartigue, J.-M. Alempic, V. Prazak, L. Belmudes, D. Vasishtan, A. M. G. Colmant, F. A. Honore, Y. Coute, K. Grünewald, C. Abergel

The paper reveals the Mimivirus genome is organized into a 30 nm helical protein shell with super-helical DNA strands and a central channel accommodating transcription machinery.

bioRxiv · Feb 17, 2022Microbiology

Characterization of Mollivirus kamchatka, the first modern representative of the proposed Molliviridae family of giant viruses

E. Christo-Foroux, J.-M. Alempic, A. Lartigue, S. Santini, K. Labadie, M. Legendre, C. Abergel, J.-M. Claverie

The paper describes the isolation and characterization of Mollivirus kamchatka, a modern relative of M. sibericum, confirming the persistence of molliviruses and their evolutionary relationship with pandoraviruses.

Journal of Virology · Mar 31, 2020Peer-reviewedMicrobiology

Commensalism in the Mimiviridae giant virus family

S. Jeudy, L. Bertaux, J.-M. Alempic, A. Lartigue, M. Legendre, L. Belmudes, S. Santini, N. Philippe, L. Beucher, E. G. Biondi, S. Juul, D. J. Turner, Y. Coute, J.-M. Claverie, C. Abergel

This study investigates the interaction network between a virophage, transpovirons, and their host giant viruses, revealing a form of commensalism where transpovirons use virophages to propagate without affecting the host virus's infectious cycle.

bioRxiv · Sep 25, 2019 · PreprintMicrobiology

Pandoravirus celtis illustrates the microevolution processes at work in the giant Pandoraviridae genomes

M. LEGENDRE, J.-M. ALEMPIC, N. PHILIPPE, A. LARTIGUE, S. JEUDY, O. POIROT, N. T. TA, S. NIN, Y. COUTE, C. ABERGEL, J.-M. CLAVERIE

The paper analyzes the Pandoravirus celtis genome to test the hypothesis that new protein-coding genes arise de novo from non-coding regions, finding ORFans and transposase insertions.

bioRxiv · Feb 11, 2019Evolutionary Biology

Diversity and evolution of the emerging Pandoraviridae family

M. Legendre, E. Fabre, O. Poirot, S. Jeudy, A. Lartigue, J.-M. Alempic, L. Beucher, N. Philippe, L. Bertaux, K. Labadie, Y. Coute, C. Abergel, J.-M. Claverie

This study analyzes the genomic diversity and evolution of the Pandoraviridae family by comparing newly isolated strains and performing comprehensive annotation.

bioRxiv · Jan 26, 2018Microbiology