Our results have shown low mutational sensitivity in all variants except to D614G the one with the most likely neutral mutational sensitivity that all variants might not explicitly affect the function of spike glycoprotein. However, D614G might change the viral conformational plasticity and hence a potential viral fitness gain but one must be cautious about drawing any concrete conclusions about the severity of symptoms and viral transmission from genomic data only.
 
  Studying mutations such as D614G in deep is essential to control the pandemic in terms of immune systems, antibodies, or even vaccines.
 Studying mutations such as D614G in deep is essential to control the pandemic in terms of immune systems, antibodies, or even vaccines.We report the purification and characterization of a nitrilase (E.C. 3.5.5.1) (Nit11764) essential for the assimilation of cyanide as the sole nitrogen source by the cyanotroph, Pseudomonas fluorescens NCIMB 11764. Nit11764, is a member of a family of homologous proteins (nitrile_sll0784) for which the genes typically reside in a conserved seven-gene cluster known as Nit1C. The physical properties and substrate specificity of Nit11764 resemble those of Nit6803, the current reference protein for the family, and the only true nitrilase that has been crystallized. The substrate binding pocket of the two enzymes places the substrate in direct proximity to the active site nucleophile (C160) and conserved catalytic triad (Glu44, Lys126). The two enzymes exhibit a similar substrate profile, however, for Nit11764, cinnamonitrile, was found to be an even better substrate than fumaronitrile the best substrate previously identified for Nit6803. A higher affinity for cinnamonitrile (Km 1.27 mM) compared to fumaronitrile (Km 8.57 mM) is consistent with docking studies predicting a more favorable interaction with hydrophobic residues lining the binding pocket. By comparison, 3,4-dimethoxycinnamonitrile was a poorer substrate the substituted methoxyl groups apparently hindering entry into the binding pocket. in situ1H NMR studies revealed that only one of the two nitrile substituents in the dinitrile, fumaronitrile, was attacked yielding trans-3-cyanoacrylate (plus ammonia) as a product. The essentiality of Nit11764 for cyanotrophy remains uncertain given that cyanide itself is a poor substrate and the catalytic efficiencies for even the best of nitrile substrates (~5 × 103 M-1 s-1) is less than stellar.
  Screening for functional disability is a promising strategy to identify high-need older adults. We compare 2 disability measures, activities of daily living (ADLs), and life space constriction (LSC), in predicting hospitalization and mortality in older adults.
 
  We used the nationally representative National Health and Aging Trends Study of 30,885 observations of adults aged 65 years and older. Outcomes were 1-year mortality and hospitalization. Predictors were ADLs (receiving help with bathing, eating, dressing, toileting, getting out of bed, walking inside) and LSC (frequency of leaving home).
 
  Of respondents, 12.4% reported 3 or more ADLs and 10.8% reported rarely/never leaving home. ADL disability and LSC predicted high rates of 1-year mortality and hospitalization of those with 3 or more ADLs, 46.4% died and 41.0% were hospitalized; of those who never/rarely left home, 40.7% died and 37.0% were hospitalized. Of those with 
  3 or more ADLs and who never/rarely left home, 58.4% died. ADL and LSC disability combined was more predictive of 1-year mortality and hospitalization than either measure alone. ADL disability and LSC screens identified overlapping but distinct populations. LSC identified more women (72.6% vs 63.8% with ADL disability), more people who live alone (40.7% vs 30.7%), fewer who were White (71.7% vs 76.2%) with cancer (27.6% vs 32.4), and reported pain (67.1% vs 70.0%).
 
  LSC and ADLs both independently predicted mortality and hospitalization but using both screens was most predictive.  https://www.selleckchem.com/Proteasome.html  Routine screening for ADLs and LSC could help health systems identify those at high risk for mortality and health care use.
 LSC and ADLs both independently predicted mortality and hospitalization but using both screens was most predictive. Routine screening for ADLs and LSC could help health systems identify those at high risk for mortality and health care use.
  The COVID-19 pandemic has caused more than 900,000 deaths globally. The risk of mortality is higher for people with pre-existing conditions such as cancers, respiratory and cardiovascular diseases and diabetes for which tobacco use is a known risk factor. We conducted a study to explore how efforts to address the COVID-19 pandemic in Uganda have been integrated with tobacco control policies to generate evidence to inform policy decisions about the public health response in general and tobacco control interventions in particular.
 
  We conducted a desk based review of 'grey' literature data sources (i.e. data that were not included in peer reviewed journals) with information about tobacco and COVID-19 in Uganda. Data were also obtained from stakeholders involved tobacco control via an online survey and telephone interviews.
 
  A total of 136 data sources were identified, of which 107 were eligible for data extraction. The online stakeholder consultation involved invitations to 61 participants of whom 33 (54%) by recognizing the role of tobacco use in exacerbating COVID-19 health outcomes.
 Advocacy should be conducted for taxation of tobacco products to reduce consumption and generate revenue to support public health investments. Public health institutions involved in the COVID-19 response should reject donations from the tobacco industry and its allies as is stipulated in the Framework Convention on Tobacco Control and the Uganda Tobacco Control Act 2015. The COVID-19 pandemic also offers an opportunity to promote tobacco cessation and strengthening tobacco control policy implementation by recognizing the role of tobacco use in exacerbating COVID-19 health outcomes.The availability of long-read technologies, like Oxford Nanopore Technologies, provides the opportunity to sequence longer fragments of the fungal ribosomal operon, up to 6 Kb (18S-ITS1-5.8S-ITS2-28S) and to improve the taxonomy assignment of the communities up to species level and in real-time. We assess the applicability for taxonomic assignment of amplicons targeting a 3.5 Kb region (V3 18S-ITS1-5.8S-ITS2-28S D2) and a 6 Kb region (V1 18S-ITS1-5.8S-ITS2-28S D12) with the What's in my pot (WIMP) classifier. We used the ZymoBIOMICSTM mock community and different microbiological fungal cultures as positive controls. Long amplicon sequencing correctly identified Saccharomyces cerevisiae and Cryptococcus neoformans from the mock community and Malassezia pachydermatis, Microsporum canis and Aspergillus fumigatus from the microbiological cultures. Besides, we identified Rhodotorula graminis in a culture mislabelled as Candida spp. We applied the same approach to external otitis in dogs. Malassezia was the dominant fungal genus in dogs' ear skin, whereas Ma.