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[Structure and function of human-derived lysozyme: a review].

Ruwei Liu1, Qingyong Meng2, Yunping Dai2

  • 1College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.

Sheng Wu Gong Cheng Xue Bao = Chinese Journal of Biotechnology
|November 28, 2023
PubMed
Summary

Human-derived lysozyme is a group of proteins in the human body that can break down bacterial cell walls. It works by cutting a specific bond in peptidoglycan, a key component of bacterial cell walls. This enzyme has antibacterial, anti-inflammatory, and immune-enhancing properties. It is found in tissues like the small intestine and salivary glands. The review summarizes its structure, function, and use in pharmaceutical and food industries. The authors suggest that lysozyme's stability and multiple functions make it valuable for medical and industrial applications.

Keywords:
biological functionshuman lysozymemechanism of actionstructural characteristicsHuman-derived lysozymepeptidoglycanβ-(1,4)-glycosidic bondantibacterial enzyme

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Area of Science:

  • Enzymology within biochemistry
  • Pharmacology in clinical medicine
  • Structural biology in molecular sciences

Background:

Prior research has established that human-derived lysozyme is a group of naturally occurring proteins with antibacterial properties. It was already known that these proteins break down bacterial cell walls by cleaving specific glycosidic bonds. However, the full range of expression sites and biological functions remains unclear. No prior work had resolved the detailed structural features of these proteins in human contexts. That uncertainty drove the need for a comprehensive review of existing literature. This gap motivated a synthesis of current knowledge on lysozyme structure and function. The pharmaceutical applications of lysozyme have been explored, but their full market potential is not yet fully understood. This review addresses these unresolved aspects to clarify the current state of knowledge.

Purpose Of The Study:

The aim of this review is to compile and analyze existing literature on human-derived lysozyme. The specific problem is the lack of a unified summary of structural, functional, and market-related findings. The motivation comes from the need to guide further research and applications in clinical and industrial settings. This paper addresses the need for a synthesis of structural and functional data. It also seeks to clarify the biological roles of lysozyme in human systems. The authors propose that a detailed literature review will help identify key patterns and gaps. The review focuses on lysozyme's enzymatic activity and its diverse biological effects. The goal is to provide a foundation for future studies and practical applications.

Main Methods:

The review approach includes a comprehensive search of scientific databases for relevant literature. The authors propose using a structured framework to categorize findings into structural, functional, and market-related domains. They analyze primary research on lysozyme's glycosidic bond cleavage and enzymatic activity. The synthesis includes data on expression sites and biological roles in human tissues. The authors compare findings from different studies to identify consistent patterns. They also examine market applications and regulatory considerations. The literature is evaluated for methodological quality and relevance to human-derived lysozyme. The synthesis integrates findings from multiple disciplines to present a cohesive overview.

Main Results:

The strongest finding is that human-derived lysozyme cleaves β-(1,4)-glycosidic bonds in peptidoglycan. The enzyme's activity is most effective against Gram-positive bacteria. Key findings from the literature show that lysozyme is expressed in various tissues, including the small intestine and salivary glands. The review highlights its antibacterial, anti-inflammatory, and immune-enhancing properties. It also notes lysozyme's antiviral potential in certain contexts. The market applications include use in pharmaceuticals and food preservation. The authors report that lysozyme's structural stability supports its broad utility. The review concludes that lysozyme's diverse functions make it a valuable therapeutic and industrial agent.

Conclusions:

The authors synthesize evidence that human-derived lysozyme has a well-defined enzymatic mechanism. They propose that its structural features are key to its biological activity. The synthesis and implications suggest that lysozyme's expression in multiple tissues supports its diverse roles. The authors suggest that its antibacterial and immune-enhancing properties are well-supported by literature. They note that lysozyme's antiviral effects remain under investigation. The review concludes that lysozyme's market applications are expanding in pharmaceutical and food industries. The authors propose that further research is needed to clarify its full functional range. The synthesis highlights the importance of lysozyme in both clinical and industrial contexts.

The enzyme cleaves β-(1,4)-glycosidic bonds in peptidoglycan, weakening bacterial cell walls.

The enzyme is expressed in tissues like the small intestine and salivary glands.

This bond is central to peptidoglycan structure, so its cleavage disrupts bacterial integrity.

Stable structure allows lysozyme to maintain activity in diverse biological and industrial settings.

The enzyme reduces inflammation by modulating immune responses and bacterial load.

The authors propose expanding its use in therapies due to its antibacterial and immune-enhancing properties.