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What is TAP and what is its function? what happens to individuals who have a deficiency...

What is TAP and what is its function? what happens to individuals who have a deficiency in TAP? What is this condition called? What are some of its associated symptoms?

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TAP sands for transporter associated with antigen presentation protein. It belongs to the family of ATP binding cassette transporter which is present in ER lumen.

Function : TAP proteins help in transport of peptides from cytosol to the endoplasmic reticulum where it is loaded and represented on MHC I which helps in T cell recognition.

Deficiency of TAP is known as TAP deficiency syndrome. Deficiency of TAP protein causes immunodeficiency disorders.

Some common symptoms associated with TAP deficiency are recurrent infections of ear, nose, throat, lungs and skin like nasal polyps, sinusitis, otitis media, upper and lower respiratory infection and granulomatous skin lesions

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