In this paper we discuss particular aspects of the high-Miller-index Cu(5 8 90) surface. We focus on the mobility of steps and energetic step-step interactions and the possible influence of kink-kink interactions on the step structure. One important goal of this paper is to give a detailed insight into the characteristics of a typical real high-Miller-index surface, such surfaces are frequently used as substrates in enantioselective reactions because of their chiral surface properties. (C) 2004 Elsevier B.V. All rights reserved.