Summary Bacterial adhesion is a critical step for colonization of the host. The pioneer colonizer and commensal bacterium of the human gastrointestinal tract, Streptococcus salivarius , has strong adhesive properties but the molecular determinants of this adhesion remain uncharacterized. Serine‐rich repeat (SRR) glycoproteins are a family of adhesins that fulfil an important role in adhesion. In general, Gram‐positive bacteria...