DNA-binding protein

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DNA-binding protein

DNA-binding proteins are a type of protein that have the ability to bind to DNA molecules. These proteins play a crucial role in various biological functions such as DNA replication, DNA repair, genetic recombination, and gene expression.

Pronunciation

DNA-binding protein: /ˌdiːˌenˈeɪ ˈbaɪndɪŋ ˈproʊtiːn/

Etymology

The term "DNA-binding protein" is derived from the English words "DNA" (an abbreviation for deoxyribonucleic acid), "binding" (from the verb "to bind"), and "protein".

Related Terms

  • Transcription factor: A type of DNA-binding protein that controls the rate of transcription of genetic information from DNA to messenger RNA.
  • Repressor: A DNA-binding protein that inhibits the expression of one or more genes by binding to the operator or associated silencers.
  • Activator: A protein that increases gene transcription of a gene or set of genes.
  • Nucleotide: The basic building block of DNA and RNA.
  • Gene expression: The process by which information from a gene is used in the synthesis of a functional gene product.

Function

DNA-binding proteins interact with DNA in a specific or non-specific manner. These proteins can bind to single or double-stranded DNA and they have important roles in DNA replication, repair, storage, and regulation of gene expression. Some DNA-binding proteins can also modify the DNA structure, thereby regulating the accessibility of the DNA to other proteins and enzymes within the cell.

Types

There are several types of DNA-binding proteins, including histones, transcription factors, helicases, and topoisomerases. Each of these proteins has a unique function and mechanism of action.

See Also

External links

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