Chymotrypsin
Chymotrypsin — A serine protease that cleaves peptide bonds at the C-terminal side of aromatic and large hydrophobic amino acids, used in peptide mapping protocols.
What Is Chymotrypsin?
Chymotrypsin is a serine endoprotease that cleaves peptide bonds on the C-terminal side of hydrophobic residues (Phe, Trp, Tyr, Leu). It is one of the standard proteases used in peptide stability testing, peptide mapping, and proteolytic digestion for MS analysis.
Research Uses
- Stability testing: Chymotrypsin challenge assesses peptide susceptibility to GI proteases
- Peptide mapping: Complementary to trypsin (which cleaves at Lys/Arg) for improved sequence coverage
- Mechanism: Ser195-His57-Asp102 catalytic triad. Prototype serine protease for enzyme kinetics
Frequently Asked Questions
What is Chymotrypsin?
A serine protease that cleaves peptide bonds at the C-terminal side of aromatic and large hydrophobic amino acids, used in peptide mapping protocols.
Why is Chymotrypsin important in peptide research?
Chymotrypsin is a fundamental concept in biochemistry as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.