Nuclease

Nuclease is a type of enzyme that is capable of cleaving the phosphodiester bonds which link the nucleotides of nucleic acids. Nucleases are divided into two broad categories: endonucleases and exonucleases.

Function

Nucleases play a crucial role in many biological processes, including DNA replication, DNA repair, and apoptosis. They are involved in the maintenance and repair of genetic material, and in the regulation of gene expression.

Types

There are two main types of nucleases: endonucleases and exonucleases.

Endonucleases

Endonucleases cleave phosphodiester bonds within a nucleic acid chain. They are further classified into restriction endonucleases and non-restriction endonucleases.

Exonucleases

Exonucleases remove nucleotides from the ends of DNA or RNA molecules. They are further classified into 3'-5' exonucleases and 5'-3' exonucleases.

Role in Biotechnology

Nucleases have a significant role in biotechnology and genetic engineering. They are used in molecular cloning, gene therapy, and CRISPR technology.

See Also

• DNA replication
• DNA repair
• Apoptosis
• Biotechnology
• Genetic engineering

References

Nuclease Resources
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