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Analysis of Oxidative Stress in Zebrafish Embryos
Published on: July 7, 2014
Lysyl oxidase: an oxidative enzyme and effector of cell function
1Department of Biochemistry, Boston University School of Medicine, 715 Albany St., Boston, Massachusetts 02118, USA.
Cellular and Molecular Life Sciences : CMLS
|August 16, 2006
Summary
Lysyl oxidase (LOX) and its related enzymes (LOXLs) stabilize extracellular matrix proteins like collagen and elastin. These enzymes also regulate cell functions, impacting cancer and normal cell phenotypes.
Area of Science:
- Biochemistry
- Cell Biology
- Extracellular Matrix Biology
Background:
- Lysyl oxidase (LOX) is a key enzyme responsible for posttranslational modification of lysine residues.
- This modification is crucial for the crosslinking and stabilization of collagen and elastin in the extracellular matrix.
- A family of four LOX-like (LOXL) proteins shares similarities with LOX, suggesting related functions.
Purpose of the Study:
- To summarize the enzymatic activity of LOX and its role in extracellular matrix stabilization.
- To explore the broader functions of LOX and LOXL proteins beyond matrix remodeling.
- To highlight the influence of LOX and LOXL family members on cellular behavior and phenotypes.
Main Methods:
- Review of existing literature on lysyl oxidase and LOX-like proteins.
- Analysis of biochemical pathways involving lysine oxidation.
- Examination of studies investigating cellular responses to LOX/LOXL activity.
Main Results:
- LOX catalyzes the conversion of lysine to alpha-aminoadipic-delta-semialdehyde, enabling collagen and elastin crosslinking.
- LOX and LOXL proteins can modify various cationic proteins, indicating functions beyond matrix stabilization.
- LOX and LOXL family members significantly impact cell chemotaxis, proliferation, and phenotypic transitions, including malignant transformation.
Conclusions:
- Lysyl oxidase and LOXL proteins are essential for maintaining extracellular matrix integrity.
- These enzymes possess diverse cellular functions, influencing cell migration, growth, and differentiation.
- The role of LOX and LOXL in regulating cell behavior suggests potential therapeutic targets in diseases involving matrix remodeling and cell phenotype changes.
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