Characterization of extracellular proteases from Trametes trogii.
Caporale. C C; Garzillo. A M AM; Caruso. C C; Buonocore. V V
Key Findings
- Trametes trogii releases multiple extracellular proteases (amino‑, carboxypeptidase, endopeptidase, dipeptidyl aminopeptidase).
- These proteases can cleave a thymosin‑alpha‑1 fragment (residues 23‑27).
- Protease activity is pH‑dependent, with different cleavage patterns at different pH levels.
Practical Outcomes
- For DIY health enthusiasts, the study hints that thymosin‑alpha‑1 could be broken down by fungal proteases in certain environments, suggesting a need for protective formulation if taken orally. However, the research offers no direct dosing guidance or efficacy data, so its immediate utility is limited.
Summary
The paper studied enzymes secreted by the fungus Trametes trogii that chop up various peptides, including a short piece of the health‑related peptide thymosin‑alpha‑1. It identified several types of protease activity and showed that their activity changes with pH, but it didn’t test thymosin‑alpha‑1 itself for any health effects.
Abstract
The peptidase activities excreted in culture broths of Trametes trogii mycelium have been identified by determining the digestion pathway of various peptides. Insulin beta-chain (30 residues), procasomorphin (10 residues) and two peptides of five residues (proctolin and thymosin alpha 1 fragment 23-27) were utilized as model substrates. Aminopeptidase, carboxypeptidase, endopeptidase and dipeptidyl aminopeptidase activities were revealed and information on their specificity was deduced. Preliminary data on the pH-dependent activity of the peptidases were also obtained by sequence analysis of the fragment mixtures produced at different pH values.
Study Information
pubmed
1996
1996-02-01T00:00:00.000Z
10.1016/0031-9422(96)83284-5
18
22