NUCLEOTIDES Definition & Meaning

nucleotides

The molecules that form the basic modular structure of the double helix of the DNA molecule. A nucleotide consists of three molecules — a sugar, a phosphate group, and a molecule called a base . If the double helix is a twisted ladder, the sugar and phosphates form the sides of the ladder and pairs of bases form the rungs. There are four different bases, usually abbreviated A, C, G, and T for adenine, cytosine, guanine, and thymine). The order of bases in DNA determines the genetic code .

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Amino acids, which make up proteins, or nucleotides, which make up DNA and RNA, are the same way.

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Normally, uridine nucleotides would be made and consumed to help make the genetic letter codes and fuel cell metabolism.

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These nucleotides also contain a tag called biotin that can be used to fish the RNA out of a cell.

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Rather than processing the data using arithmetic operations, it is stored as a sequence of nucleotides -- the chemical building blocks of DNA.

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It had previously been assumed that RNA can only copy itself by 'randomly' constructing sequences of around 200 nucleotides in length -- so-called ribozymes.

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nucleotides

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