PPR (pentatricopeptide) repeat

Function

• no known function
• proteins containing PPR repeat are involved in:
  • RNA binding
  • RNA/DNA metabolism in mitochondria
  • chloroplasts (in plants)

Structure

• about 35 amino acids long found in up to 18 copies in some proteins Family of proteins containing PPR repeats appears to be greatly expanded in plants.

More general terms

• consensus repeat