Dipeptide ACE Inhibitor Virtual Screening
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Solution Overview
Problem
Current research on short peptides for ACE inhibition has limitations in accuracy and no dipeptide with high ACE inhibitory activity has been found, necessitating the development of a dipeptide with improved inhibitory properties.
Innovation Solution
Virtual screening of 400 dipeptides using a self-developed software and molecular docking method identifies dipeptides with cysteine at the N-terminal and basic or aliphatic amino acids at the C-terminal, particularly H, K, A, or I, which exhibit enhanced ACE inhibitory activity, and optional modifications for improved stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current pharmaceuticals for treatment of high pressure are used, then blood pressure can be lowered, but adverse effects such as cough, taste disorders, and rashes occur
Solution Approach 1:
The patent uses short peptides (dipeptides, tripeptides, tetrapeptides) as ACE inhibitors instead of traditional long-term pharmaceuticals. These short peptides provide the necessary blood pressure lowering effect while being naturally derived from food proteins, thereby reducing adverse effects like cough, taste disorders, and rashes associated with conventional medications.
Solution Approach 2:
The patent changes the chemical structure parameters by using naturally occurring peptides with specific amino acid sequences rather than synthetic chemicals. This structural parameter change maintains the ACE inhibitory function while eliminating the harmful side effects of traditional antihypertensive drugs.
2Measurement precision
If virtual screening of 400 dipeptides is performed using self-developed software and molecular docking method, then dipeptides with high ACE inhibitory activity can be identified, but research time and computational resources increase
Solution Approach 1:
The patent performs virtual screening of 400 dipeptides using self-developed software and molecular docking methods before experimental verification. This preliminary computational action identifies promising dipeptides with high ACE inhibitory activity, allowing researchers to focus experimental resources on the most promising candidates and significantly reducing overall research time.
Solution Approach 2:
The patent uses computational models and molecular docking simulations to create virtual representations of dipeptide-ACE interactions. This copying approach allows high-throughput screening of 400 dipeptides without physical experimentation, maintaining high accuracy in identifying active compounds while minimizing time and resource consumption.
3Reliability
If dipeptides are prepared from food-borne proteins as raw material, then safety level and reduction of toxic or side effects are improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses food-borne proteins as raw materials for dipeptide preparation, which serves multiple functions: providing a safe and natural source of amino acids, ensuring high biocompatibility, and reducing toxic or side effects. This universal approach leverages the existing safety profile of food proteins while achieving the desired pharmacological effect.
Solution Approach 2:
The patent changes the raw material parameter from synthetic chemicals to food-borne proteins. This parameter change improves safety and reduces toxicity while the associated manufacturing complexity is managed through established food processing and peptide extraction techniques.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The identified dipeptides achieve an ACE inhibition rate of over 30% at 20 μg/ml, significantly surpassing existing dipeptides, demonstrating great potential for further development as antihypertensive agents.
Implementation Method 1
the carboxyl of the peptide bond forms two-ligand with Zn atom, which is stabilized by the H-bond formed between the N-atom and the carboxyl oxygen of the peptide bond
Implementation Method 2
the five-bond structure unit is formed between the carboxylate radical group acting with Arg (Arginine) positive charged salt bond in the ACE enzyme
Data Source
AI summary
An application of dipeptide as an ACE enzyme activity inhibitor. Virtual screening is performed on 400 types of dipeptide based on ACE inhibiting effects thereof according to a detected ACE enzyme crystal structure by using self-developed software and adopting a molecular docking method, experiments are conducted to verify the ACE inhibitory activity of the dipeptide obtained by virtual screening, and it finds out that the dipeptide with the N terminal as cysteine has better ACE inhibitory activity.