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Peptide synthesis catalyzed by papain at alkaline pH values
International Journal of Peptide and Protein Research
|May 1, 1984
Summary
This study details a new peptide synthesis method using papain enzyme, achieving high yields (50-94%) in aqueous solutions. The process optimizes conditions for efficient peptide production, avoiding secondary hydrolysis.
Area of Science:
- Biochemistry
- Organic Chemistry
- Enzymology
Background:
- Peptide synthesis is crucial for pharmaceuticals and research.
- Traditional methods can be complex and require specific conditions.
- Enzymatic synthesis offers a potentially milder and more efficient alternative.
Purpose of the Study:
- To describe an optimized papain-catalyzed peptide synthesis method.
- To achieve high yields of peptides in aqueous media.
- To investigate factors influencing the enzymatic peptide synthesis.
Main Methods:
- Utilizing papain enzyme for peptide bond formation.
- Employing acylamino acid alkyl esters as carboxyl components.
- Using amino acid amides or tert-butyl esters as amino components.
- Conducting reactions at pH 8-9.5 in aqueous solutions.
Main Results:
- Peptide synthesis achieved with yields ranging from 50% to 94%.
- Secondary hydrolysis was not required under the described conditions.
- An excess of the carboxyl component was found to increase peptide yield.
- The influence of temperature, solvents, and reagent concentrations was evaluated.
Conclusions:
- Papain-catalyzed peptide synthesis is an effective method for producing aqueous-soluble peptides.
- Optimized reaction conditions, including excess carboxyl component, enhance yield.
- This enzymatic approach provides a viable alternative to traditional peptide synthesis.