What is the role of nucleotide?

Answer 1

Major Functions of Nucleotides

1. Components of nucleic acids (DNA, RNA)

2. Carriers of chemical energy in the cell (eg., ATP, GTP)

3. Components of cofactors (eg., NAD, FAD)

4. Intermediates in cellular communication and signal transduction

(eg., cAMP, cGMP)

5. Donor substrates for glycobiology (eg. UDPG)

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Answer 2

Nucleotides are organic compounds that play a central role in metabolism. In addition to forming the structural units of RNA and DNA, nucleotides are sources of chemical energy (adenosine triphosphate and guanosine triphosphate), have roles in cellular signaling (cyclic guanosine monophosphate), and are incorporated into important cofactors in enzymatic reactions (coenzyme A, flavin adenine dinucleotide, flavin mononucleotide, and nicotinamide adenine dinucleotide phosphate).

Answer 3

Nucleotides are molecules that are joined together to make RNA an DNA. Nucleotides play a central role in metabolism.They also serve as sources of chemical energy, participate in cellular signaling and are important cofactors for enzymic reactions.

Answer 4

Their precise sequence in a DNA molecule provides the genetic instructions for the organism to which it governs.
Nucleotides in DNA serve as a template for a strand of RNA (which codes for amino acids which from a polypeptide chain). For example:

A - U
T - A
A - U
G - C
G - C
C - G
T - A

Note:
(leftmost column is DNA template and the column on the right is the RNA strand):

Nucelotides when phosphorylated become energy carriers such as Adenosine Triphosphate and Guanosine Triphosphate.

Answer 5

The main function is they (dNTPs-deoxy nucleotide triphosphates) act as a building blocks of DNA macromolecule. During DNA synthesis (or replication) they are used to build the DNA backbone.

Adenine pairs with thymine with a double hydrogen bond and guanine makes a triple bond with cytosine, this in turn ensure the double helical structure of the DNA molecule. The sole function of the DNA sequence is that it (ATGTGCCCTTA... for example) codes for RNA and in turn proteins! (ATG bases code for Methionine aminoacid in the protein). Thus they are the basis of heredity and life.

Answer 6

The nucleotides are composed of three parts: a five-carbon sugar, a phosphate, and a nitrogenous base. The nucleotides are the storehouse of genetic information.

Answer 7

1. Component of DNA

2. Act as chemical energy carrier such as ATP

3. Component of cofactor NAD, FAD