A land deal between QuickTrip Corp. and Mercy Medical Center - Des Moines will result in a state-of-the-art convenience store at the southwest corner of Sixth and University avenues. The lot was once the location of Mercy Home Respiratory Care and Medical Supply, which has been relocated to 601 S.W. Ninth St. The project is part of the rejuvenation of the Sixth Avenue Corridor and the historic River Bend and Cheatom Park neighborhoods north of downtown Des Moines.