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The binding affinity and kinetics of target engagement are fundamental to establishing structure-activity relationships (SARs) for prospective therapeutic agents. [https://www.selleckchem.com/products/Rapamycin.html selleck compound] Enhancing these binding parameters for operative targets, while minimizing binding to off-target sites, can translate to improved drug efficacy and a widened therapeutic window. Compound activity is typically assessed through modulation of an observed phenotype in cultured cells. Quantifying the corresponding binding properties under common cellular conditions can provide more meaningful interpretation of the cellular SAR analysis. Consequently, methods for assessing drug binding in living cells have advanced and are now integral to medicinal chemistry workflows. In this review, we survey key technological advancements that support quantitative assessments of target occupancy in cultured cells, emphasizing generalizable methodologies able to deliver analytical precision that heretofore required reductionist biochemical approaches. Expected final online publication date for the Annual Review of Biochemistry, Volume 89 is June 22, 2020. Please see http//www.annualreviews.org/page/journal/pubdates for revised estimates.Transcription in several organisms from certain bacteria to humans has been observed to be stochastic in nature toggling between active and inactive states. Periods of active nascent RNA synthesis known as bursts represent individual gene activation events in which multiple polymerases are initiated. Therefore, bursting is the single locus illustration of both gene activation and repression. Although transcriptional bursting was originally observed decades ago, only recently have technological advances enabled the field to begin elucidating gene regulation at the single-locus level. In this review, we focus on how biochemical, genomic, and single-cell data describe the regulatory steps of transcriptional bursts. Expected final online publication date for the Annual Review of Biochemistry, Volume 89 is June 22, 2020. Please see http//www.annualreviews.org/page/journal/pubdates for revised estimates.The investigation of water oxidation in photosynthesis has remained a central topic in biochemical research for the last few decades due to the importance of this catalytic process for technological applications. Significant progress has been made following the 2011 report of a high-resolution X-ray crystallographic structure resolving the site of catalysis, a protein-bound Mn4CaOx complex, which passes through ≥5 intermediate states in the water-splitting cycle. Spectroscopic techniques complemented by quantum chemical calculations aided in understanding the electronic structure of the cofactor in all (detectable) states of the enzymatic process. Together with isotope labeling, these techniques also revealed the binding of the two substrate water molecules to the cluster. These results are described in the context of recent progress using X-ray crystallography with free-electron lasers on these intermediates. The data are instrumental for developing a model for the biological water oxidation cycle. Expected final online publication date for the Annual Review of Biochemistry, Volume 89 is June 22, 2020. Please see http//www.annualreviews.org/page/journal/pubdates for revised estimates.The WHO Eastern Mediterranean Region (EMR) consists of 22 countries including Afghanistan, Bahrain, Djibouti, Egypt, Iraq, Islamic Republic of Iran, Jordan, Kuwait, Lebanon, Libya, Morocco, Oman, Pakistan, Palestine, Qatar, Saudi Arabia, Somalia, Sudan, Syrian Arab Republic, Tunisia, United Arab Emirates (UAE), and Yemen. According to Global Burden of Disease (GBD) data, death from self-harm has increased by 100% between 1990 and 2015 in this region. Although this increase is substantial, it appears trivial in comparison to the 1027% increase in deaths due to war and legal interventions. This might partly explain why suicide prevention does not have a high priority in these countries and why there are currently no suicide prevention strategies in place. Despite the above, some important activities in the area of suicide prevention have been carried out in the region. And while peace and stability may take time to come to the region, it should not prevent suicide prevention programs from being developed and implemented.This chapter draws on internationally available data to describe the epidemiology of suicide and self-harm in the World Health Organization (WHO) Western Pacific Region. It then describes the suicide prevention activities in the region, using in-depth case studies to highlight some key suicide prevention activities in certain countries/areas and the Global Survey on Suicide Prevention conducted in 2013 by the International Association for Suicide Prevention (IASP) and WHO. It demonstrates that there is considerable variability both between and within low and middle income countries and high income countries, both in terms of rates of suicide and self-harm and in terms of the preventive efforts that have been mobilised to address them. Adequate funding for suicide prevention efforts in the region should be a priority, as should the delivery of a range of suicide prevention approaches. Evaluation and monitoring efforts are also crucial.This chapter presents a narrative synthesis of the evidence relating to the effectiveness of 13 different approaches (interventions) that have been incorporated into national suicide prevention programs. These approaches are presented in an analytic framework that distinguishes between national and community-based multilevel programs, prevention, and treatment/maintenance. The primary source of evidence are six reviews of reviews published since 2005, supplemented by a small number of systematic reviews and primary studies. We report strongly supportive evidence concerning the effectiveness of structural interventions (restrictions on access to bridges, tall buildings, and railways) and restriction on access to pharmacological agents. Weakly supportive evidence of effectiveness is available for community-based multilevel programs; restrictions on access to firearms and ligature points in institutional settings; settings-based programs (in schools, communities, workplaces, prisons, and the armed forces); education and training targeted at primary care physicians; lithium; cognitive behavioral therapy and dialectical behavioral therapy; and brief contact.