A synthetic peptide as an allosteric inhibitor of human arginase I and II.

A synthetic peptide as an allosteric inhibitor of human arginase I and II.
Mol Biol Rep. 2021 Feb 15;:
Authors: Gao K, Lunev S, van den Berg MPM, Al-Dahmani ZM, Evans S, Mertens DALJ, Meurs H, Gosens R, Groves MR
Abstract
Arginine metabolism mediated by arginases plays a critical role in cell and tissue function. The arginine hydrolysis is deeply involved in the urea cycle, which helps the kidney excrete ammonia from blood. Upregulation of arginases affects microenvironment stability due to the presence of excess urea in blood. To regulate the arginase activities properly, a synthetic peptide based on the structure of human arginase I was designed and assessed. Preliminary data shows it inhibits human arginase I and II with an IC50 of 2.4 ± 0.3 and 1.8 ± 0.1 mmol, respectively. Our kinetic analysis indicates the inhibition is not competitive with substrate - suggesting an allosteric mechanism. This result provides a step towards specific inhibitors design.
PMID: 33590412 [PubMed - as supplied by publisher]

Source: Molecular Biology Reports - February 15, 2021 Category: Molecular Biology Authors: Gao K, Lunev S, van den Berg MPM, Al-Dahmani ZM, Evans S, Mertens DALJ, Meurs H, Gosens R, Groves MR Tags: Mol Biol Rep Source Type: research