Adhesin YadA

UniProtKB accession:  A1JUB7

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UniProtKB description:  Collagen-binding outer membrane protein forming a fibrillar matrix on the bacterial cell surface and phagocytosis resistance (By similarity). Promotes initial attachment and invasion of eukaryotic cells (Probable). Also protects the bacteria by being responsible for agglutination, serum resistance and complement inactivation. Gly-389 plays an important role in this protein; replacing it with increasingly large polar residues decreases expression levels and trimer stability. Residues larger than Ser (Thr, Asn or His) significantly decrease serume resistance and bacterial autoagglution without affecting adhesion to host cells or host cell cytokine production (PubMed:17921300).