TY  - JOUR
TI  - Inhibition effect of Gly-Arg-Gly-Asp-Ser (GRGDS) and Arg-Gly-Asp (RGD) Bioactive Peptides on Angiotensin-Converting Enzyme Activity Purified from Human Serum
AB  - Angiotensin-converting enzyme (ACE, EC 3.4.15.1) is a physiological target for researching new antihypertensive drugs, as it is a substantial enzyme in the regulation of blood pressure. Herein, ACE was purified from human serum with affinity chromatography. Vmax and KM values were found as 60.98 (µmol/min)/mL and 0.34 mM, respectively. The effects of Gly-Arg-Gly-Asp-Ser (GRGDS) and Arg-Gly-Asp (RGD) bioactive peptides on purified ACE were researched. Also, captopril, a specific ACE inhibitory, was used as a reference inhibitor. Bioactive peptides, GRGDS and RGD, demonstrated the inhibitory effect on purified ACE with  $IC_{50}$ values of 46.39 µM and 456.46 µM, respectively. Ki values and kind of inhibition for GRGDS and RGD by the Lineweaver-Burk chart were found. The kind of inhibitory for these bioactive peptides was calculated as reversible-competitive inhibitory. Ki values for GRGDS and RGD were obtained as 93.28 µM and 435.67 µM, respectively. The $IC_{50}$ value of captopril was designated as 1.57 nM. The inhibitory kind of captopril was designated as reversible non-competitive inhibitory and the Ki value was 0.99 nM. In this study, it was concluded that RGD and GRGDS bioactive peptides have the potential to be utilized as ACE inhibitors.
AU  - Adanaş, Resul
AU  - TÜRKOĞLU, Vedat
AU  - BAŞ, Zehra
DO  - 10.21597/jist.1312143
PY  - 2023
JO  - Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi
VL  - 13
IS  - 4
SN  - 2146-0574
SP  - 2847
EP  - 2860
DB  - TRDizin
UR  - http://search/yayin/detay/1211252
ER  -