Anti-EDIII of DENV2 [2C8]

Name: Anti-EDIII of DENV2 [2C8]
SKU: Ab03110
Availability: InStock

Description:

Recombinant monoclonal antibody to EDIII of DENV2. Manufactured using AbAb’s Recombinant Platform with variable regions (i.e. specificity) from the hybridoma 2C8.

Clone Name:

2C8

Published Application(s):

crystallization, neutralizing, SPR, ELISA

Published Species Reactivity:

Dengue Virus

Products based on this clone:

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Ab03110-23.0 Anti-EDIII of DENV2 [2C8]
Dengue Virus
Rabbit IgG
Purified
In Stock

Ab03110-2.0 Anti-EDIII of DENV2 [2C8]
Dengue Virus
Mouse IgG2a
Purified
In Stock

Ab03110-21.0 Anti-EDIII of DENV2 [2C8]
Dengue Virus
Mouse IgM
Purified
Ships in 4-5 weeks

Ab03110-10.0 Anti-EDIII of DENV2 [2C8]
Dengue Virus
Human IgG1
Purified
Ships in 4-5 weeks

Ab03110-15.0 Anti-EDIII of DENV2 [2C8]
Dengue Virus
Human IgM
Purified
Ships in 4-5 weeks

UniProt Accession Number of Target Protein: W5RZ25

Alternative Name(s) of Target: E-protein; DENV EDIII; Dengue envelope protein domain III; E protein domain III; EDIII; DVC-21; DV 21; DV-21; Envelope protein E
Immunogen: The original antibody was generated by immunizing mice with DENV2 16681.

Specificity: The antibody binds to domain III of the envelope (E) protein of Dengue virus. In particular, it recognizes the N-terminal region of EDIII (DIII-DI hinge residues 298-303) and the BC loop (residues 328-334), and residues K361, V282, E383 and P384. The antibody is serotype specific to DENV2. The E protein is a structural protein located on the viral surface and consists of three distinct domains termed EDI, EDII, and EDIII. Of these, EDIII mediates attachment to target cells, prior to internalization into host endosomes.

Application Notes: Binding avidity/affinity of both Full length (IgG) and Fab fragments of the antibody to whole virion measured by ELISA. The crystal structure of the Fab fragment in complex with EDIII of DENV2 NGC was determined. Focus reduction neutralization assays showed highly potent neutralization of DENV2 NGC and 16681 for the antibody (IgG2a) with 50% neutralization titers in the sub-nanomolar range (50% FRNT at 0.025 nM). Pre- and postattachment neutralization assays showed the antibody is capable of significantly inhibiting infection after the virus had bound to the cells. The antibody has strong capacity to promote antibody dependent enhancement (ADE). ADE was analysed using U937 cells, the antibody demonstrated typical infection enhancement with peak titers of over 1000-fold enhancement over background and a wide range of concentrations at which enhancement occurred. The humanized version of the antibody (human IgG1) showed enhancement for DENV2/16681 and DENV2/NGC. Surface plasmon resonance assay was performed to evaluate the binding specificity and affinity between the antibody and recombinant EDIII (Kd= 176.7 nM) (Renner et al., 2018; PMID: 30323338).

Antibody first published in: Renner et al. Characterization of a potent and highly unusual minimally enhancing antibody directed against dengue virus. Nat Immunol. 2018 Nov;19(11):1248-1256. PMID:30323338
Note on publication: The paper describes the generation and characterization of the antibody, which is specific for the envelope protein of Dengue virus. The antibody shows neutralizing activity, but promotes antibody dependent enhancement.

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