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Influenza virus utilizes splicing factors stored at nuclear speckles through an intranuclear trafficking pathway, which targets viral M1 mRNA to nuclear speckles to promote post-transcriptional splicing and then transports the spliced M2 mRNA from the nucleus.
Antigenic variants from human H1N1 and H3N2 influenza virus libraries possessing random mutations in the haemagglutinin protein, selected by incubation with human and/or ferret convalescent sera, identify escape variants similar to those that have emerged in nature.
Fully replication competent HIV-1 viruses engineered to harbour a foreign epitope tag enabled the unbiased characterization of the cellular interactomes of viral Env and Vif proteins during the natural infection of human lymphocytes.
Whole genome sequencing coupled with assessment of maternal recto–vaginal Streptococcus agalactiae (Group B Streptococcus) colonization, stillbirth and neonatal disease reveals the disease burden and bacterial population structure in coastal Kenya.
Influenza virus PB2 and M1 induce translocation of host protein CLUH from the cytoplasm to SC35-positive speckles in the nucleoplasm where it has a role in subnuclear transport of the viral ribonucleoprotein.
Global sampling campaigns show that the CHAB-I-5 Roseobacter cluster is abundant in the marine environment, and found from the poles to the tropics. Analysis of the draft genome of strain SB2 reveals adaptation to an oligotrophic lifestyle.
Analysis of 60 sites in three ocean basins suggests that overgrowth of fleshy algae on coral reefs supports higher microbial abundances dominated by copiotrophic, potentially pathogenic bacteria via the provision of dissolved inorganic carbon.
High fidelity, ultra-deep sequencing of a modified replicon system revealed >1000-fold differences in mutation rate across the hepatitis C virus genome, with extreme variation even between adjacent nucleotides.
Antibiotic-mediated selection may promote or suppress conjugation dynamics, dependent on the population structure, physiological status of cells and energy availability.
Enrichment of oral microbiota in the bronchoalveolar lavage of apparently healthy people is associated with a pro-inflammatory phenotype, suggesting that aspiration-derived microbiota play a role in regulating basal inflammatory status.
The mosquito gut microbiome utilizes C-type lectins to evade the bactericidal capacity of host-derived antimicrobial peptides, providing a mechanism for microbiome-induced manipulation of host immunity and maintenance of gut homeostasis.
Binding of type 3 secretion system translocons to host intermediate filaments mediate Shigella, Salmonella and Yersinia docking and facilitate effector translocation.
A transposon-based screen identifies a family of outer membrane proteins — named surface lipoprotein assembly modulator (Slam) — that are important for the surface display of lipoprotein virulence factors in Neisseria spp.
Infection with HIV-1 triggers an increase in N6-methyladenosine (m6A) modification of both viral and host mRNAs, which impacts viral replication and nuclear export of viral RNA.
The HigBA toxin–antitoxin system of Caulobacter crescentus can act as a switch between promoting and inhibiting bacterial growth, depending on the dosage of HigA antitoxin, HigB toxin and its mRNA target.
T. gondii crosses biological barriers using transcellular migration or within an infected migrating cell. Here, infection and lysis of endothelial cells in the brain vasculature is identified as a new route of access to the central nervous system.
Deletions in amino acid biosynthetic pathways (auxotrophy) are widely used as selection markers, but induce major alterations of the Saccharomyces transcriptome, proteome and metabolome, representing a confounding factor in the use of auxotrophs.
pks5-recombination-mediated cell surface remodelling increased virulence of Mycobacterium canettii, driving evolution from a putative generalist mycobacteria towards a professional pathogen of mammalian hosts.
