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Defining Substrate Specificities for Lipase and Phospholipase Candidates

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Published on: November 23, 2016

Bioinspired artificial lipase with engineered hydrophilic microenvironment for oriented substrate binding and

Han Liu¹, Keyu Xing¹, Shaoyi Yu¹

¹School of Food Science and Bioengineering, Hunan Provincial Key Laboratory of Cytochemistry, Changsha University of Science & Technology, Changsha, Hunan, 410114, China.

Food Research International (Ottawa, Ont.)

|June 10, 2026

Summary

Researchers developed biomimetic artificial lipases using metal-organic frameworks. These artificial enzymes mimic natural lipase selectivity, efficiently producing structured lipids with high sn-1,3 regioselectivity.

Keywords:

Acidolysis Artificial lipase Hydrophilic microenvironment Oriented binding Structural lipids

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Area of Science:

Biocatalysis
Materials Science
Biomimetic Chemistry

Background:

Natural lipases utilize a lid region to control substrate selectivity and bind triglycerides via a hydrophilic microenvironment.
Triglyceride modification is crucial for synthesizing structured lipids with specific properties.

Purpose of the Study:

To design and construct biomimetic artificial lipases inspired by natural lipase mechanisms.
To investigate the correlation between artificial lipase hydrophilicity and substrate binding preference.
To evaluate the performance of these artificial lipases in structured lipid synthesis.

Main Methods:

Fabrication of metal-organic frameworks with varying hydrophilicity to serve as artificial lipases.
Systematic investigation of substrate binding affinity towards triglyceride components.
Application of hydrophilic artificial lipases in the acidolysis of camellia oil.

Main Results:

A positive correlation was observed between artificial lipase hydrophilicity and preferential binding to the glycerol backbone of triglycerides.
Hydrophilic artificial lipases demonstrated superior catalytic efficiency in capric acid incorporation (29.09%) compared to natural lipases.
High sn-1,3 regioselectivity was achieved, with 41.33% capric acid incorporation at sn-1,3 positions versus 4.62% at the sn-2 position.

Conclusions:

The biomimetic strategy of creating hydrophilic microenvironments in artificial lipases effectively mimics natural lipase substrate recognition.
Hydrophilic artificial lipases offer an efficient and advantageous approach for synthesizing rapidly digestible, low-accumulating sn-1,3-specific structured lipids.