The serine-rich repeat (SRR) glycoproteins are a family of adhesins found in many Gram-positive bacteria. Expression of the SRR adhesins has been linked to virulence for a variety of infections. including streptococcal endocarditis. The SRR preproteins undergo intracellular glycosylation. https://unitedssports.shop/product-category/ball-glove-softball-fielding-senior/