Match each component of an ELISA experiment with the correct description: primary antibody has high affinity for the ar secondary antibody the region of the antibody enzyme linked to secondary antibody has high affinity for the Fc Fab domain causes color change for d
Added by Alexandra C.
Close
Step 1
Step 1: The primary antibody binds to the antigen of interest. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 61 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
In a sandwich enzyme-linked immunosorbent assays (ELISA), samples added in parallel with a serially diluted standard with known analyte concentrations. Detection of bound analyte can be achieved by a biotinylated detection secondary antibody followed by streptavidin-conjugated enzyme such as Horseradish peroxidase (HRP) and finally an appropriate colorimetric substrate. Alternatively, a detection secondary antibody directly conjugated to a HRP enzyme may also be used. The resultant color change is directly proportional to the amount of analyte present in the sample and can be quantified using an ELISA reader. What is a correct arrangement of these proteins? (5 points) A. ELISA plates are coated by monoclonal antibodies specific for the analyte. B. ELISA plates are coated by the detection secondary antibody specific for the monoclonal antibodies. C. ELISA plates are coated by the detection secondary antibody specific for the analyte (antigen). D. ELISA plates are coated by monoclonal antibodies specific for the detection secondary antibody. 3. ELISA antibody detection tests are widely used to estimate the prevalence and incidence of SARS-CoV-2. The following figure shows an ELISA technique capable of measuring neutralizing antibodies (NAbs). NAbs can specifically block the interaction of the viral receptor binding protein (RBD) with the host cell's membrane receptor protein and therefore block the viral entry into the host cell (ACE2). Therefore, serological tests to detect NAbs against SARS-CoV-2 are an important aid in determining herd immunity and humoral protection, assessing vaccine efficacy during long-awaited clinical trials, and selecting convalescent plasma for intensive care treatment. Based on the following detection diagram which ELISA tube will produce a colored product. (5 points) Negative Test Positive Test Non-neutralizing antibodies Neutralizing antibody RBD successfully binds to ACE2 RBD binding to ACE2 is blocked Neutralizing antibody Secondary antibody Non-Neutralizing antibody Horseradish peroxidase A. Positive Tube B. Negative Tube
Adi S.
Md.Daniyal A.
Madhur L.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD