The leucine-rich repeat is a recently characterized structural motif used in molecular recognition processes as diverse as signal transduction, cell adhesion, cell development, DNA repair and RNA processing. We present here the crystal structure at 2.5 A resolution of the complex between ribonuclease A and ribonuclease inhibitor, a protein built entirely of leucine-rich repeats ...
The leucine-rich repeat is a recently characterized structural motif used in molecular recognition processes as diverse as signal transduction, cell adhesion, cell development, DNA repair and RNA processing. We present here the crystal structure at 2.5 A resolution of the complex between ribonuclease A and ribonuclease inhibitor, a protein built entirely of leucine-rich repeats. The unusual non-globular structure of ribonuclease inhibitor, its solvent-exposed parallel beta-sheet and the conformational flexibility of the structure are used in the interaction; they appear to be the principal reasons for the effectiveness of leucine-rich repeats as protein-binding motifs. The structure can serve as a model for the interactions of other proteins containing leucine-rich repeats with their ligands.
Related Citations:
Mechanism of Ribonuclease Inhibition by Ribonuclease Inhibitor Protein Based on the Crystal Structure of its Complex with Ribonuclease A Kobe, B., Deisenhofer, J. () To be published --: --
Complex between Bovine Ribonuclease A and Porcine Ribonuclease Inhibitor Crystallizes in a Similar Unit Cell as Free Ribonuclease Inhibitor Kobe, B., Ma, Z., Deisenhofer, J. (1994) J Mol Biol 241: 288
Organizational Affiliation:
Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas 75235-9050.
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