The Yop virulon allows Yersinia spp. to resist the immune response of the host by injecting harmful proteins into host cells. We identified three new elements of the Yop virulon: SycN, required for normal secretion of YopN, and YscX and YscY, two new components of the secretion machinery.
Iriarte, M., & Cornelis, G. R. (1999). Identification of SycN, YscX, and YscY, three new elements of the Yersinia yop virulon. Journal of bacteriology, 181(2), 675-680. https://hdl.handle.net/2078.5/135922 (Original work published 1999)