Fig. 1
From: Ultra-high resolution X-ray structure of orthorhombic bovine pancreatic Ribonuclease A at 100K
Bovine pancreatic ribonuclease A: Amino acid sequence. The side-chains of Gln-11, His-12, Lys-41, Thr-45 and His-119 are generally recognised as being closely involved in the enzyme activity. It has also been suggested that Lys-7, Asp-44, Lys-66, Phe-120, Asp-121 and Ser-123 may also have possible roles in this mechanism. This figure has no structural element apart from S–S Bridges