Question

Pathogens have receptors on the cell surface that are involved in adherence to host cells. What are they called and what type of molecules are they? ( explain breifly)

Answer 1

certain bacterias have fimbria or pili for adhesion .these structures are known as adhesin they are extracellular molecules .they are proteins which help the pathogen to bind host cell surface

.adhesins are chemical components of capsule,celllwall ,pili or fimbriae.gram positive organism possess afimbrial proteins on their surface aid in binding host cell ,gram negative has functional amyloid surface fibers called curli .it is composed of proteins called curlins .viral adhesive structures are glycoproteins .in case of hiv gp 120 and in corona spike protein .