Leucine-Rich Repeat

**Semantic type:** Amino Acid Sequence

**Definition:** A leucine-rich protein structural motif that forms an alpha/beta horseshoe tertiary structure. It is composed of repeating units of 20-30 amino acid stretches that are rich in leucine residues. This structural motif is found in a wide variety of unrelated proteins.

**Synonyms:** - LRR - LRR Repeat - Leucine Rich Repeat - Right-Handed Beta-Alpha Superhelix