scholarly journals Two novel potent ACEI peptides isolated from Pinctada fucata meat hydrolysates using in silico analysis: identification, screening and inhibitory mechanisms

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12172-12182
Author(s):  
Jiao Li ◽  
Jilei Su ◽  
Min Chen ◽  
Jiao Chen ◽  
Wenping Ding ◽  
...  

The process of discovering potent angiotensin-converting enzyme inhibitory (ACEI) peptides.

Biomedicines ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1038
Author(s):  
Deborah Giordano ◽  
Luigi De Masi ◽  
Maria Antonia Argenio ◽  
Angelo Facchiano

An outbreak by a new severe acute respiratory syndrome betacoronavirus (SARS-CoV-2) has spread CoronaVirus Disease 2019 (COVID-19) all over the world. Immediately, following studies have confirmed the human Angiotensin-Converting Enzyme 2 (ACE2) as a cellular receptor of viral Spike-Protein (Sp) that mediates the CoV-2 invasion into the pulmonary host cells. Here, we compared the molecular interactions of the viral Sp from previous SARS-CoV-1 of 2002 and SARS-CoV-2 with the host ACE2 protein by in silico analysis of the available experimental structures of Sp-ACE2 complexes. The K417 amino acid residue, located in the region of Sp Receptor-Binding Domain (RBD) of the new coronavirus SARS-CoV-2, showed to have a key role for the binding to the ACE2 N-terminal region. The R426 residue of SARS-CoV-1 Sp-RBD also plays a key role, although by interacting with the central region of the ACE2 sequence. Therefore, our study evidenced peculiarities in the interactions of the two Sp-ACE2 complexes. Our outcomes were consistent with previously reported mutagenesis studies on SARS-CoV-1 and support the idea that a new and different RBD was acquired by SARS-CoV-2. These results have interesting implications and suggest further investigations.


2021 ◽  
Vol 12 (2) ◽  
pp. 1158-1161
Author(s):  
Geeta Mounika ◽  
Netala Silvia ◽  
Gondu Eswara Rao ◽  
Kotte Raju ◽  
Siva Kumar B ◽  
...  

The Mentha genus includes several species such as Mentha rotundifolia L., which is widely distributed around the Mediterranean basin, America and in western Asia.  The plant is recommended in folk medicine for the treatment of various diseases. It has also been used to discover biomolecules that have significant beneficial effects with fewer side effects. Mentha rotundifolia (L) leaves are potential as an antihypertensive cause of terpenes which contain in them. 36 different terpenes and terpenoids have been identified and selected from this plant.  This study evaluated the mechanism of phytoconstituents from the above plant in the inhibition of angiotensin-converting enzyme-related carboxypeptidase (ACE2) with molecular docking. Selected ligands were docked on the receptor (PDB ID: 1R4L) using Auto Dock Vina and analysed by PyMol. 2D and 3D structures of compounds were drawn by the Chem Draw program. The standard drug that has been taken for the study, lisinopril, has shown a binding affinity of -7.8 Kcal/mol. Calacorene, one of the terpenes present in the plant, has interacted with Phe274, Asp367, Glu406, Thr445, Thr371 residues of protein and produced a docking score similar to that of the standard drug Lisinopril. In the light of the results obtained, the plant studied is promising as a source of natural hypotensive agent that can be further developed as a lead molecule.


2020 ◽  
Vol 47 (6) ◽  
pp. 398-408
Author(s):  
Sonam Tulsyan ◽  
Showket Hussain ◽  
Balraj Mittal ◽  
Sundeep Singh Saluja ◽  
Pranay Tanwar ◽  
...  

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