Protein A of staph aureus is pa of bacterial ?
Correct Answer: Cell wall
Description: Ans. is 'b' i.e., Cell wall Protein A is a cell wall component of many S aureus strains that binds to the Fc poion of IgG molecules except IgG3.The Fab poion of IgG bound to protein A is free to combine with a specific anigen. Protein a has become an impoant reagent in immunology and diagnostic laboratory technology; for example, protein A with attached lgG moleculaes directed against a specific bacterial antigen will agglutinate bacteria that have that antigen ("coagglutination").
Category:
Microbiology
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