Cryo-EM structures of SARS-CoV-2 Omicron BA.2 spike

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Abstract

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  1. SciScore for 10.1101/2022.04.07.487528: (What is this?)

    Please note, not all rigor criteria are appropriate for all manuscripts.

    Table 1: Rigor

    Ethicsnot detected.
    Sex as a biological variablenot detected.
    Randomizationnot detected.
    Blindingnot detected.
    Power Analysisnot detected.
    Cell Line Authenticationnot detected.

    Table 2: Resources

    Antibodies
    SentencesResources
    Antibodies were incubated at room temperature for 1 hour, washed and binding detected with goat anti-human-HRP (Jackson ImmunoResearch Laboratories, PA) and TMB substrate.
    anti-human-HRP
    suggested: None
    Mouse anti-monkey IgG-HRP (Southern Biotech, CAT# 4700-05) and Goat anti-human IgG-HRP (Jackson ImmunoResearch Laboratories, CAT# 109-035-098) secondary antibodies were used to detect antibody bound to the spike proteins.
    anti-monkey IgG-HRP
    suggested: (SouthernBiotech Cat# 4700-05, RRID:AB_2796069)
    anti-human IgG-HRP
    suggested: None
    RBD binding to IgG’s was assessed using a Series S CM5 chip (Cytiva, MA) which was labeled with anti-human IgG (fc) antibody using a Human Antibody Capture Kit (Cytiva, MA).
    anti-human IgG
    suggested: None
    Experimental Models: Cell Lines
    SentencesResources
    Antibodies were produced in Expi293 cells (embryonal, human kidney).
    Expi293
    suggested: RRID:CVCL_D615)
    293T/ACE2-MF cells were detached from T75 culture flasks using TrypLE Select Enzyme solution, suspended in growth medium (100,000 cells/ml) and immediately added to all wells (10,000 cells in 100 µL of growth medium per well).
    293T/ACE2-MF
    suggested: None
    Recombinant DNA
    SentencesResources
    The sequence was codon optimized for mammalian expression and subcloned into the pCAGGS mammalian expression vector under the AG promoter.
    pCAGGS
    suggested: RRID:Addgene_127347)
    Software and Algorithms
    SentencesResources
    https://www.addgene.org).
    https://www.addgene.org
    suggested: (Addgene, RRID:SCR_002037)
    Sensogram data were analyzed using the BiaEvaluation software (Cytiva, MA)
    BiaEvaluation
    suggested: (BIAevaluation Software, RRID:SCR_015936)
    The cryoSPARC (Punjani et al., 2017) software was used for data processing.
    cryoSPARC
    suggested: (cryoSPARC, RRID:SCR_016501)
    Coot (Emsley et al., 2010)
    Coot
    suggested: (Coot, RRID:SCR_014222)
    , Pymol (Schrodinger, 2015), Chimera (Pettersen et al., 2004), ChimeraX (Goddard et al., 2018) and Isolde (Croll, 2018) were used for model building and refinement.
    Pymol
    suggested: (PyMOL, RRID:SCR_000305)
    Difference distance matrices (DDM): DDM were generated using the Bio3D package (Grant et al., 2020) implemented in R (R Core Team (2014).
    Bio3D
    suggested: None

    Results from OddPub: Thank you for sharing your data.


    Results from LimitationRecognizer: An explicit section about the limitations of the techniques employed in this study was not found. We encourage authors to address study limitations.

    Results from TrialIdentifier: No clinical trial numbers were referenced.


    Results from Barzooka: We did not find any issues relating to the usage of bar graphs.


    Results from JetFighter: We did not find any issues relating to colormaps.


    Results from rtransparent:
    • Thank you for including a conflict of interest statement. Authors are encouraged to include this statement when submitting to a journal.
    • Thank you for including a funding statement. Authors are encouraged to include this statement when submitting to a journal.
    • No protocol registration statement was detected.

    Results from scite Reference Check: We found no unreliable references.


    About SciScore

    SciScore is an automated tool that is designed to assist expert reviewers by finding and presenting formulaic information scattered throughout a paper in a standard, easy to digest format. SciScore checks for the presence and correctness of RRIDs (research resource identifiers), and for rigor criteria such as sex and investigator blinding. For details on the theoretical underpinning of rigor criteria and the tools shown here, including references cited, please follow this link.