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Concept

Phage lambda

Publications associées (27)

Generation of a Gal4-dependent gene recombination and illuminating mouse

Freddy Radtke

Cell labeling technologies, including the Cre/loxP system, are powerful tools in developmental biology. Although the conventional Cre/loxP system has been extensively used to label the expression of specific genes, it is less frequently used for labeling p ...

INT PRESS EDITING CENTRE INC2022

Inositol pyrophosphates promote the interaction of SPX domains with the coiled-coil motif of PHR transcription factors to regulate plant phosphate homeostasis

Luciano Andres Abriata

Phosphorus is an essential nutrient taken up by organisms in the form of inorganic phosphate (Pi). Eukaryotes have evolved sophisticated Pi sensing and signaling cascades, enabling them to stably maintain cellular Pi concentrations. Pi homeostasis is regul ...

Nature Research2021

The box C/D snoRNP assembly factor Bcd1 interacts with the histone chaperone Rtt106 and controls its transcription dependent activity

Benjamin Marcel Daniel Rothé

Biogenesis of eukaryotic box C/D small nucleolar ribonucleoproteins initiates co-transcriptionally and requires the action of the assembly machinery including the Hsp90/R2TP complex, the Rsa1p:Hit1p heterodimer and the Bcd1 protein. We present genetic inte ...

Nature Research2021

A Vibriophage Takes Antirepression to the Next Level

Melanie Blokesch, Leonardo Filipe Lemos Rocha

Since its isolation by Esther Lederberg, phage lambda and its repressor protein CI have contributed substantially to the advancement of molecular biology. In this issue of Cell Host & Microbe, Silpe et al. (2020) characterize the antirepressor Qtip of Vibr ...

Elsevier2020

Structure and Function of the T4 Spackle Protein Gp61.3

Petr Leiman

The bacteriophage T4 genome contains two genes that code for proteins with lysozyme activity-e and 5. Gene e encodes the well-known T4 lysozyme (commonly called T4L) that functions to break the peptidoglycan layer late in the infection cycle, which is requ ...

2020

Structure and transformation of bacteriophage A511 baseplate and tail upon infection of Listeria cells

Petr Leiman, Sergey Nazarov, Mikhail Shneyder, Ricardo Cesar Guerrero Ferreira, Nicholas Michael Ian Taylor

Contractile injection systems (bacteriophage tails, type VI secretions system, R-type pyocins, etc.) utilize a rigid tube/contractile sheath assembly for breaching the envelope of bacterial and eukaryotic cells. Among contractile injection systems, bacteri ...

WILEY2019

Structural and functional analysis of host attachment proteins from contractile injection systems

Michel Plattner

Bacteriophages of the myoviridae family, R-type pyocin, Photorhabus virulence cassette (PVC), Serratia antifeeding prophage (Afp) and type 6 secretion system (T6SS) form a class of contractile injection systems that share common structural and functional c ...

EPFL2018

Bypassing bacterial infection in phage display by sequencing DNA released from phage particles

Christian Heinis, Xudong Kong, Camille Villequey

Phage display relies on a bacterial infection step in which the phage particles are replicated to perform multiple affinity selection rounds and to enable the identification of isolated clones by DNA sequencing. While this process is efficient for wild-typ ...

2017

New methods for developing (bi)cyclic peptides by phage display

Camille Villequey

Cyclic peptide ligands are a promising molecular format for the development of therapeutics. They combine some of the advantages of large protein therapeutics (high affinity and specificity) and of small molecule drugs (accessibility to chemical synthesis ...

EPFL2017

Phage Selection of Cyclic Peptides for Application in Research and Drug Development

Christian Heinis, Xudong Kong, Kaycie Marie Butler

Cyclic peptides can bind to protein targets with high affinities and selectivities, which makes them an attractive modality for the development of research reagents and therapeutics. Additional properties, including low inherent toxicity, efficient chemica ...

American Chemical Society2017

MAR-Mediated transgene integration into permissive chromatin and increased expression by recombination pathway engineering

Christian Iseli, Nicolas Mermod, Thomas Junier

Untargeted plasmid integration into mammalian cell genomes remains a poorly understood and inefficient process. The formation of plasmid concatemers and their genomic integration has been ascribed either to non-homologous end-joining (NHEJ) or homologous r ...

2017

Single Molecule Localization and Discrimination of DNA–Protein Complexes by Controlled Translocation Through Nanocapillaries

Aleksandra Radenovic, Sebastian Maerkl, Sanjin Marion, Roman Bulushev, Sebastian James Davis, Ekaterina Emilova Petrova

Through the use of optical tweezers we performed controlled translocations of DNA-protein complexes through nanocapillaries. We used RNA polymerase (RNAP) with two binding sites on a 7.2 kbp DNA fragment and a dCas9 protein tailored to have five binding si ...

American Chemical Society (ACS)2016

Branched Lateral Tail Fiber Organization in T5-Like Bacteriophages DT57C and DT571/2 is Revealed by Genetic and Functional Analysis

Ricardo Cesar Guerrero Ferreira

The T5-like siphoviruses DT57C and DT571/2, isolated from horse feces, are very closely related to each other, and most of their structural proteins are also nearly identical to T5 phage. Their LTFs (L-shaped tail fibers), however, are composed of two prot ...

Mdpi Ag2016

Natural competence for transformation

Melanie Blokesch

While most molecular biologists are familiar with the artificial transformation of bacteria in the context of laboratory cloning experiments, natural competence for transformation refers to a specific physiological state in which prokaryotes are able to ta ...

2016

Phage selection of chemically stabilized alpha-helical peptide ligands

Christian Heinis, Jörg Hülsken, Davide Bertoldo, Pierre Vincent Dessen, Philippe Diderich, Maola Khan Mohammad Golam

Short alpha-helical peptides stabilized by linkages between constituent amino acids offer an attractive format for ligand development. In recent years, a range of excellent ligands based on stabilized alpha-helices were generated by rational design using a ...

2016

Phage selection of peptide macrocycles against b-catenin to interfere with Wnt signaling

Christian Heinis, Jörg Hülsken, Davide Bertoldo, Pierre Vincent Dessen, Maola Khan Mohammad Golam

Upregulation of b-catenin, the primary mediator of the Wnt signaling pathway, plays an important role in the tumorigenesis of several types of human cancer. Targeting b-catenin to interfere with its ability to serve as a translational co-activator is consi ...

2016

Structure and biochemical characterization of bacteriophage phi92 endosialidase

Petr Leiman, Christopher Browning

Surface-associated capsular polysaccharides (CPSs) protect bacteria against phage infection and enhance pathogenicity by interfering with the function of the host innate immune system. The CPS of enteropathogenic Escherichia coli K92 is a unique sialic aci ...

Academic Press Inc Elsevier Science2015

Structure of viral membrane-penetrating machines by electron cryo-microscopy and tomography

Sergey Nazarov

My PhD thesis aims to obtain the structure of several bacteriophages, including so-called “jumbo” phages, using the electron cryo-microscopy (cryo-EM) and to study the structural transformation of these viruses as they attach and infect the host cell. We a ...

EPFL2015

Complete genome sequences of T5-related Escherichia coli bacteriophages DT57C and DT571/2 isolated from horse feces

Ricardo Cesar Guerrero Ferreira

We report the complete genome sequencing of two Escherichia coli T5-related bacteriophages, DT57C and DT571/2, isolated from the same specimen of horse feces. These two isolates share 96 % nucleotide sequence identity and can thus be considered representat ...

Springer Wien2015

Phage Selection of Photoswitchable Peptide Ligands

Christian Heinis, Shiyu Chen, Inmaculada Rentero Rebollo, Silvia Bellotto

Photoswitchable ligands are powerful tools to control biological processes at high spatial and temporal resolution. Unfortunately, such ligands exist only for a limited number of proteins and their development by rational design is not trivial. We have dev ...

2014