Contents

02 August 1989
Vol 245, Issue 4918

About The Cover

Three-dimensional structure of a single zinc finger domain showing backbone fold, cysteine and histidine ligands, and zinc atom, determined by the use of distance and dihedral angle constraints derived from nuclear magnetic resonance spectroscopy. See page 635. [Illustration by Michael Pique, Research Institute of Scripps Clinic, computed on Ardent Titan and Sun TAAC-1 with software from Ray Tracing Corporation and Sun Microsystems]