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Helicases are molecular motors that translocate along single-stranded DNA and unwind duplex DNA. They rely on the consumption of chemical energy from nucleotide hydrolysis to drive their translocation. Specialized helicases play a critically important role in DNA replication by unwinding DNA at the front of the replication fork. The replicative helicases of the model systems bacteriophages T4 and T7, Escherichia coli and Saccharomyces cerevisiae have been extensively studied and characterized using biochemical methods. While powerful, their averaging over ensembles of molecules and reactions m...

Chez les patients atteints de sclérose en plaques, la dégénérescence des neurones est particulièrement avancée (taux importants de déchets neuronaux dans le sang) quand des anneaux noirs, traces d'une forte inflammation active, sont détectés à la périphérie des plaques observées sur les coupes cérébrales à l'IRM (Imagerie par Résonance Magnétique). Cette corrélation a été mise en évidence par une étude internationale dirigée par le Dr. Pietro Maggi, avec notamment le concours des universités et hôpitaux universitaires de Lausanne et Bâle en Suisse, puis de l'UCLouva...

Abstract Recent single-molecule studies have demonstrated that the composition of multi-protein complexes can strike a balance between stability and dynamics. Proteins can dynamically exchange in and out of the complex depending on their concentration in solution. These exchange dynamics are a key determinant of the molecular pathways available to multi-protein complexes. It is therefore important that we develop robust and reproducible assays to study protein exchange. Using DNA replication as an example, we describe three single-molecule fluorescence assays used to study protein exchange dy...

Pacific Biosciences of California, Inc. to Present at Upcoming Investor Conferences Pacific Biosciences of California, Inc. Menlo Park, California, UNITED STATES MENLO PARK, Calif., Feb. 26, 2021 (GLOBE NEWSWIRE) -- Pacific Biosciences of California, Inc. (NASDAQ: PACB) announced today that its executives will be speaking at the following investor conferences: Cowen Annual Health Care Conference on Monday, March 1, 2021 at 1:20 p.m. EST Barclays Global Healthcare Conference on Wednesday, March 10, 2021 at 2:25 p.m. EST The live webcasts can be accessed at the company�...

Is Pacific Biosciences The Best Biotech Stock To Buy In The Stock Market Today? In the biotech world of genome sequencing, Illumina (NASDAQ: ILMN) may be the undisputed market leader. But when it comes to shareholder returns in the past year, Pacific Biosciences of California Inc. (NASDAQ: PACB) was one of the top performers, rewarding investors lavishly. For the uninitiated, Pacific Biosciences (or PacBio) is a biotechnology company that develops gene sequencing systems.  PacBio’s key product is its Sequel system, a nucleic acid sequencing platform based on Single Molecule, Real-Time...