The invention relates to a prosthesis component (11, 23) of a joint endoprosthesis. The prosthesis component (11, 23) comprises a slide surface (19, 24) which is designed to form a slide joint together with a matching slide surface (26) of another prosthesis component (11, 23). According to the invention, the slide surface (19, 24) is formed by a slide-surface coating (20) which is applied to the body of the prosthesis component (10, 22), wherein the slide-surface coating (20) has an antimicrobial action. The slide-surface coating (20) according to the invention acts against microorganisms in the area of the slide joint.