General information
    ACovPid:ACoVP100441
    Trivial Name:LCB3
    Amino Acids Sequence:NDDELHMLMTDLVYEALHFAKDEEIKKRVFQLFELADKAYKNNDRQKLEKVVEELKELLERLLS
    Length:64
    C-Terminal Modification:None
    N-Terminal Modification:None
    Chemical Modification:None
    Peptide Source:

    Human Angiotensin Converting Enzyme 2 (hACE2) : 9606

    Source Description:
    Against Virus:

    Severe acute respiratory syndrome coronavirus 2 (2019-nCoV) (SARS-CoV-2) : 2697049

    Inhibition Value Type:IC50
    Inhibitory Effect:0.000048
    Inhibitory Unit:µM
    Target Domain Name:RBD of SARS-CoV-2
    Assay:Virus microneutralization(MN) assay SARS-CoV-2 neutralization assay
    Assay Description:SARS-CoV-2 strain 2019 n-CoV/USA_WA1/2020 was obtained from the Centers for Disease Control and Prevention (gift of Natalie Thornburg). Virus stocks were produced in Vero CCL81 cells (ATCC) and titrated by focus-forming assay on Vero E6 cells. Serial dilutions of minibinders were incubated with 102focus-forming units (FFU) of SARS-CoV-2 for 1 h at 37°C. RBD binder-virus complexes were added to Vero E6 cell monolayers in 96-well plates and incubated for 1 h at 37°C. Next, cells were overlaid with1% (w/v) methylcellulose in MEM supplemented to contain 2% FBS. Plates were harvested 30 h later by removing overlays and fixed with 4% PFA in PBS for 20 min at room temperature. Plates were washed and sequentially incubated with 1 µg/mL of CR3022 (5)anti-S antibody and HRP-conjugated goat anti-human IgG in PBS supplemented to contain 0.1% saponin and 0.1% BSA. SARS-CoV-2-infected cell foci were visualized using TrueBlue peroxidase substrate (KPL) and quantitated on an ImmunoSpot microanalyzer (Cellular Technologies). Data was processed using Prism software (GraphPad Prism 8.0).
    Anti-CoV activity in vivo:
    Reference:32907861
    Comment:Large pools of designed minibinders (supplementary materials, materials and methods), made by using the first and second approaches, were encoded in long oligonucleotides and screened for binding to fluorescently tagged RBD displayed on the surface of yeast cells. Deep sequencing identified three ACE2 helix scaffolded designs (“approach 1”), and 105 de novo interface designs (“approach 2”) that were enriched after fluorescence-activated cell sorting (FACS) for RBD binding. All three ACE2-scaffolded designs and 12 of the de novo designs were expressed in Escherichia coli and purified. One of the ACE2-scaffolded designs and 11 of the 12 de novo designs were soluble and bound RBD with affinities ranging from 100 nM to 2 µM in biolayer interferometry (BLI) experiments (figs. S2, A, C, and E; and S3). Affinity maturation of the ACE2-scaffolded design by means of polymerase chain reaction (PCR) mutagenesis led to a variant, AHB1, which bound RBD with an affinity of ~1 nM (fig. S4) and blocked binding of ACE2 to the RBD (fig. S5A), which is consistent with the design model, but had low thermostability (fig. S4, C and D). We generated 10 additional designs incorporating the binding helix hairpin of AHB1 and found that one bound the RBD and was
    3D structure:

    StructureACoVP100441

    Structure Experiment Verified:YES
    Similar Peptides:ACoVP100439   ACoVP100440   ACoVP100438   

    Target Domain information
    Target Domain Full Name:Receptor-binding domain (RBD) of Severe acute respiratory syndrome coronavirus 2 (2019-nCoV) (SARS-CoV-2) spike glycoprotein
    Target Type:glycoprotein
    UniprotID [Sequence]:

    P0DTC2 [319-541]

    Target Synonyms:Alternative name(s) for spike glycoprotein: E2 Peplomer protein S glycoprotein
    Target Source:

    Severe acute respiratory syndrome coronavirus 2 (2019-nCoV) (SARS-CoV-2) : 2697049

    Target Structure:6LVN, 6LXT, 6LZG, 6M0J, 6M17, 6M1V, 6VSB, 6VW1, 6VXX, 6VYB, 6W41, 6WPS, 6WPT, 6X29, 6X2A, 6X2B, 6X2C, 6X6P, 6X79, 6XC2, 6XC3, 6XC4, 6XC7, 6XCM, 6XCN, 6XDG, 6XE1, 6XEY, 6XF5, 6XF6, 6XKL, 6XKP, 6XKQ, 6XLU, 6XM0, 6XM3, 6XM4, 6XM5, 6XR8, 6XRA, 6XS6, 6YLA, 6YM0, 6YOR, 6YZ5, 6YZ7, 6Z2M, 6Z43, 6Z97, 6ZB4, 6ZB5, 6ZBP, 6ZCZ, 6ZDG, 6ZDH, 6ZER, 6ZFO, 6ZGE, 6ZGG, 6ZGI, 6ZH9, 6ZHD, 6ZLR, 6ZOW, 6ZOX, 6ZOY, 6ZOZ, 6ZP0, 6ZP1, 6ZP2, 6ZP5, 6ZP7, 6ZWV, 6ZXN, 7A25, 7A29, 7A4N, 7A5R, 7A5S, 7A91, 7A92, 7A93, 7A94, 7A95, 7A96, 7A97, 7A98, 7AD1, 7BWJ, 7BYR, 7BZ5, 7C01, 7C2L, 7C8D, 7C8V, 7C8W, 7CAB, 7CAH, 7CAI, 7CAK, 7CAN, 7CDI, 7CDJ, 7CH4, 7CH5, 7CHB, 7CHC, 7CHE, 7CHF, 7CHH, 7CJF, 7CN9, 7CT5, 7CWM, 7CWN, 7CWO, 7CWS, 7CWU, 7DCC, 7DCX, 7DD2, 7DD8, 7DDD, 7DDN, 7DF3, 7DF4, 7DK3, 7DK4, 7DK5, 7DK6, 7DK7, 7DMU, 7JJC, 7JJI, 7JJJ, 7JMO, 7JMP, 7JMW, 7JV2, 7JV4, 7JV6, 7JVA, 7JVB, 7JVC, 7JW0, 7JWB, 7JWY, 7JX3, 7JZL, 7JZM, 7JZN, 7JZU, 7K43, 7K45, 7K4N, 7K8M, 7K8S, 7K8T, 7K8U, 7K8V, 7K8W, 7K8X, 7K8Y, 7K8Z, 7K90, 7K9Z, 7KDG, 7KDH, 7KDI, 7KDJ, 7KDK, 7KDL, 7KE4, 7KE6, 7KE7, 7KE8, 7KE9, 7KEA, 7KEB, 7KEC, 7KJ2, 7KJ3, 7KJ4, 7KJ5, 7KKK, 7KKL, 7KL9, 7KMB, 7KMS, 7KMZ, 7KNB, 7KNE, 7KNH, 7KNI, 7L02, 7L06, 7L09