Results 81 to 90 of about 4,847 (207)

Zernike Phase Contrast Cryo-Electron Microscopy and Tomography for Structure Determination at Nanometer and Subnanometer Resolutions [PDF]

, 2010
Zernike phase contrast cryo-electron microscopy (ZPC-cryoEM) is an emerging technique that is capable of producing higher image contrast than conventional cryoEM.
Chiu, Wah, Danev, Radostin, Jakana, Joanita, King, Jonathan Alan, Liu, Xiangan, Murata, Kazuyoshi, Nagayama, Kuniaki, Schmid, Michael F.   +7 more
core   +1 more source

Purine Chemistry in the Early RNA World at the Origins of Life: From RNA and Nucleobases Lesions to Current Key Metabolic Routes

ChemBioChem, Volume 26, Issue 11, June 3, 2025.
In the nascent processes of the beginnings and evolution of life, nucleobases and especially purines, ribonucleos(t)ides and primitive RNAs have been continuously modified. A RNA‐peptide world and key metabolic pathways probably have emerged from the corresponding chemical modifications resulting from adenine deamination, purine alkylation and ...
Jean‐Luc Décout, Marie‐Christine Maurel   +1 more
wiley   +1 more source

Solar radiation-driven decay of cyanophage infectivity, and photoreactivation of the cyanophage by host cyanobacteria [PDF]

Aquatic Microbial Ecology, 2007
Cyanophage PP (isolated from Plectonema boryanum and Phormidium foveolarum and named after the respective first letters of its 2 hosts) is a short-tailed, icosahedral-shaped, and double- stranded DNA virus and can be frequently detected with a high abundance and activity in many eutrophic lakes in Wuhan City, PR China.
K Cheng, Y Zhao, X Du, Y Zhang, S Lan, Shi Zhengli   +5 more
openaire   +1 more source

Insights Into Phylogeny, Diversity and Functional Potential of Poseidoniales Viruses

Environmental Microbiology, Volume 27, Issue 1, January 2025.
Our spatio‐temporal metagenomic study of a subtropical estuary successfully identified viruses and their potential hosts. Viral contigs were detected using a consensus approach comprising geNOMAD and VirSorter2. Through virus‐host predictions, we were able to identify, characterise and propose magroviruses and non‐magroviruses associated with ...
Apoorva Prabhu, Julian Zaugg, Cheong Xin Chan, Simon J. McIlroy, Chris Rinke   +4 more
wiley   +1 more source

Genomes of the T4-related bacteriophages as windows on microbial genome evolution [PDF]

, 2010
The T4-related bacteriophages are a group of bacterial viruses that share morphological similarities and genetic homologies with the well-studied Escherichia coli phage T4, but that diverge from T4 and each other by a number of genetically determined ...
Vasiliy M Petrov, Swarnamala Ratnayaka, James M Nolan, Eric S Miller, Jim D Karam   +4 more
core   +1 more source

Genomic diversification of marine cyanophages into stable ecotypes [PDF]

Environmental Microbiology, 2016
Summary Understanding the structure and origin of natural bacteriophage genomic diversity is important in elucidating how bacteriophages influence the mortality rates and composition of their host communities. Here, we examine the genetic structure and genomic diversification of naturally occurring bacteriophages ...
Marston, Marcia F., Martiny, Jennifer B.H.   +1 more
openaire   +3 more sources

Rates of Molecular Evolution in a Marine Synechococcus Phage Lineage

Viruses, 2019
Cyanophages are characterized by vast genomic diversity and the formation of stable ecotypes over time. The evolution of phage diversity includes vertical processes, such as mutation, and horizontal processes, such as recombination and gene transfer ...
Anne Kupczok, Tal Dagan
doaj   +1 more source

Adaptive Responses of Cyanobacteria to Phosphate Limitation: A Focus on Marine Diazotrophs

Environmental Microbiology, Volume 26, Issue 12, December 2024.
Marine diazotrophic cyanobacteria, which are essential for atmospheric nitrogen fixation in low‐nutrient oceans, have developed various strategies to survive under phosphate (Pi) limitation by using high‐affinity transporters and enzymes that break down dissolved organic phosphorus (DOP).
Chloé Caille, Solange Duhamel, Amel Latifi, Sophie Rabouille   +3 more
wiley   +1 more source

Effects of salinity and nutrient stress on a toxic freshwater cyanobacterial community and its associated microbiome: An experimental study

Environmental Microbiology Reports, Volume 16, Issue 5, October 2024.
This study demonstrated the strong halotolerance of natural Microcystis colonies, which was associated with the production of osmolytes. Bacterial community composition was primarily structured by salinity, followed by time, and differed between the attached and free fractions.
Océane Reignier, Enora Briand, Fabienne Hervé, Elise Robert, Véronique Savar, Simon Tanniou, Zouher Amzil, Cyril Noël, Myriam Bormans   +8 more
wiley   +1 more source

Estimating the Importance of Viral Contributions to Soil Carbon Dynamics

Global Change Biology, Volume 30, Issue 10, October 2024.
Written Summary: Viruses are ubiquitous in soils and impact global carbon cycling through infection of microbial hosts. Using existing data from the literature, we generate a global budget of the carbon potentially released from microbial biomass by viral infections in soils.
Amy E. Zimmerman, Emily B. Graham, Jason McDermott, Kirsten S. Hofmockel   +3 more
wiley   +1 more source