Question

which of the following is a base group that is not found in the structure of...

which of the following is a base group that is not found in the structure of DNA?
a) gamma- aminobutyic acid
b) ferritin
c) thymine
d) nicotinamide

Science   Anatomy-And-Physiology   
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Answer #1

Answer is option (a) gamma- aminobutyic acid

Ferritin is considered a cytoplasmic iron-storage protein. It is found in the nuclei in some cells. It include both in protection as well as iron-induced oxidative damage to DNA.

Thymine is a nucleotide which is basic unit of deoxyribonucleic acid.(DNA)

PARP-1 is a precursor moleculee of nicotinamide. it is a nuclear enzyme that can detects DNA damage, by binding to DNA strand breaks, and uses it as a substrate to produce ADP-ribose and nicotinamide.

No role for GABA has been found so far in the structure of DNA.

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