This review presents recommended nomenclature for the biosynthesis of ribosomally synthesized and post-translationally modified peptides (RiPPs), a rapidly growing class of natural products. The current knowledge regarding the biosynthesis of the >20 distinct compound classes is also reviewed, and commonalities are discussed.

Background. Healthcare workers (HCWs) face considerable mental and physical stress caring for patients with Covid-19. They are at higher risk of acquiring and transmitting this virus. Perception and attitude of HCWs in Saudi Arabia regarding Covid-19 were evaluated in comparison with MERS outbreak. Methods. In a cross-sectional study, HCWs at three tertiary hospitals in Saudi Arabia were surveyed via

In this retrospective case series that included 69 adults in Wuhan, 29% of patients showed dyspnea and 20% of cases showed SpO2<90%. Patients with SpO2<90% had a significantly higher risk of death. Abidol showed initial therapeutic effect. ABSTRACT Background