Browse
Submit Data
Databases
API
Help

Dataset Information

15 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Introduction of Brazilian SARS-CoV-2 484K.V2 related variants into the UK.

ABSTRACT:

SUBMITTER: Toovey OTR

PROVIDER: S-EPMC7857057 | biostudies-literature |

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Similar Datasets

SARS-CoV-2 UK, South African and Brazilian Variants in Karachi- Pakistan

Project description:The COVID-19 pandemic has been evolving in Pakistan with the emergence of the United Kingdom, South African, and Brazilian variants. These variants of concern (VOC) are known for increased transmissibility and can also be responsible for avoiding immune responses. The gold standard to detect VOC is sequencing, however routine genomic surveillance in resource-limited countries like Pakistan is not always readily available. The inadvertent detection of the B.1.1.7 (United Kingdom) VOC by a target failure due to the key deletion in spike Δ69-70 by commercially available PCR assay helps to understand target failures as an alternative approach to detect variants. In pursuit of VOC it was further discovered that a deletion in the ORF1a gene (ORF1a Δ3675-3677) is common in B.1.1.7, B.1.351 (South African), and P.1 (Brazilian) VOC. The Real-Time Quantitative PCR (RT-qPCR) assay can distinguish target failures and can discriminate SARS-CoV-2 VOC. The study uses positive samples archived in respective labs. Samples were divided into two groups. Group I constitutes 261 positive samples out of total of 16,964 (1.53%) performed from August till September 2020, while group II consists of 3501 positive samples out of a total of 46,041 (7.60%) performed, from November 2020 till January 2021. The RT-qPCR analysis showed that no VOC was present in positive samples of group I. However, a staggering difference in results was noted in group II where the positivity ratio increased exponentially and the VOC started appearing in significant numbers (53.64%). This concludes that the third wave in Pakistan is due to the importation of SARS-CoV-2 variants.

| S-EPMC8572847 | biostudies-literature

Introduction of the South African SARS-CoV-2 variant 501Y.V2 into the UK.

Project description: Not available

| S-EPMC7813514 | biostudies-literature

Recognition through GRP78 is enhanced in the UK, South African, and Brazilian variants of SARS-CoV-2; An in silico perspective.

Project description:New SARS-CoV-2 variants emerged in the United Kingdom and South Africa in December 2020 in concomitant with the Brazillian variant in February 2021 (B.1.1.248 lineage) and currently sparking worldwide during the last few months. The new strain 501.V2 in South Africa bears three mutations in the spike receptor-binding domain (RBD); K417 N, E484K, and N501Y, while the Brazilian B.1.1.248 lineage has 12 mutations. In the current study, we simulate the complex ACE2-SARS-CoV-2 spike RBD system in which the RBD is in the wild-type and mutated isoforms. Additionally, the cell-surface Glucose Regulated Protein 78 (CS-GRP78) associated with the ACE2-SARS-CoV-2 spike RBD complex (ACE2-S RBD) is modeled at the presence of these mutant variants of the viral spike. The results showed that E484K and N501Y are critical in viral spike recognition through either ACE2 or CS-GRP78. The mutated variants (the UK, South African, and Brazilian) of the spike RBD tightly bind to GRP78 more than in the case of the wild-type RBD. These results point to the potent role of GRP78 with ACE2 in the attachment of the new variants, which could be a key for the design of inhibitors to block SARS-CoV-2 attachment and entry to the host cell.

| S-EPMC8139235 | biostudies-literature

Genetic variants and source of introduction of SARS-CoV-2 in South America.

Project description:After more than 4 months of the COVID-19 pandemics with genomic information of SARS-CoV-2 around the globe, there are more than 1000 complete genomes of this virus. We used 691 genomes from the GISAID database. Several studies have been reporting mutations and hotspots according to viral evolution. Our work intends to show and compare positions that have variants in 30 complete viral genomes from South American countries. We classified strains according to point alterations and portray the source where strains came into this region. Most viruses entered South America from Europe, followed by Oceania. Only Chilean isolates demonstrated a relationship with Asian isolates. Some changes in South American genomes are near to specific domains related to viral replication or the S protein. Our work contributes to the global understanding of which sort of strains are spreading throughout South America, and the differences among them according to the first isolates introduced to this region.

| S-EPMC7272973 | biostudies-literature

Detection of SARS-CoV-2 variants in India from UK returnees.

Project description: Not available

| S-EPMC8220361 | biostudies-literature

Structural conservation among variants of the SARS-CoV-2 spike postfusion bundle

Project description: Not available

| EMPIAR-10999 | biostudies-other

Tilt series of SARS-CoV-2 virions, Wuhan/Alpha/Beta/Delta variants

Project description: Not available

| EMPIAR-11070 | biostudies-other

Missense variants in human ACE2 modify binding to SARS-CoV-2 Spike

Project description: Not available

| S-BSST649 | biostudies-other

Responses to SARS-CoV-2 variants in hACE2 transgenic mice

Project description:hACE2 transgenic mice were infected with the original SARS-CoV-2 strain (B.1) and the Beta (B.1.351) variant. Lung and spleen samples were collected 1 day post infection (DPI), 3 DPI and 5 DPI, and mRNA was sequenced.

2023-09-22 | E-MTAB-13308 | biostudies-arrayexpress

Identification of genotypic variants and its proteomic mutations of Brazilian SARS-CoV-2 isolates.

Project description:The second wave of COVID-19 caused by severe acute respiratory syndrome virus (SARS-CoV-2) is rapidly spreading over the world. Mechanisms behind the flee from current antivirals are still unclear due to the continuous occurrence of SARS-CoV-2 genetic variants. Brazil is the world's second-most COVID-19 affected country. In the present study, we identified the genomic and proteomic variants of Brazilian SARS-CoV-2 isolates. We identified 16 different genotypic variants were found among the 27 isolates. The genotypes of three isolates such as Bra/1236/2021 (G15), Bra/MASP2C844R2/2020 (G11), and Bra/RJ-DCVN5/2020 (G9) have a unique mutant in NSP4 (S184N), 2'O-Mutase (R216N), membrane protein (A2V) and Envelope protein (V5A). A mutation in RdRp of SARS-CoV-2, particularly the change of Pro-to Leu-at 323 resulted in the stabilization of the structure in BRA/CD1739-P4/2020. NSP4, NSP5 protein mutants are more virulent in genotype 15 and 16. A fast protein folding rate changes the structural stability and leads to escape for current antivirals. Thus, our findings help researchers to develop the best potent antivirals based on the new mutant of Brazilian isolates.

| S-EPMC8563081 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data