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A restriction enzyme from Fusobacterium nucleatum 4H which recognizes GCNGC
Nucleic Acids Research
|January 1, 1979
Summary
The restriction enzyme Fnu4H I, from Fusobacterium nucleatum 4H, identifies a specific DNA sequence (5'G C N G C-3') and cuts it. This enzyme is valuable for molecular biology applications requiring precise DNA manipulation.
Area of Science:
- Molecular Biology
- Enzymology
- Genomics
Background:
- Restriction enzymes are crucial tools in molecular biology for DNA analysis and manipulation.
- Site-specific endonucleases recognize and cleave DNA at defined sequences.
- Fusobacterium nucleatum 4H is a bacterial species from which novel enzymes can be isolated.
Purpose of the Study:
- To characterize the novel restriction endonuclease Fnu4H I.
- To determine the DNA recognition sequence and cleavage site of Fnu4H I.
- To assess the potential utility of Fnu4H I in molecular biology.
Main Methods:
- Isolation and purification of the restriction endonuclease Fnu4H I from Fusobacterium nucleatum 4H.
- DNA substrate preparation with varying sequences.
- Enzymatic activity assays to determine recognition sequence and cleavage pattern.
Main Results:
- Fnu4H I was successfully isolated and characterized.
- The enzyme recognizes the specific DNA sequence 5'G C N G C-3'/3'-C G N C G-5'.
- Cleavage occurs at a defined site within the recognition sequence.
Conclusions:
- Fnu4H I is a novel restriction endonuclease with a unique recognition site.
- This enzyme expands the repertoire of tools available for site-specific DNA cleavage.
- Fnu4H I holds potential for applications in genetic engineering and DNA research.