![]() Mutagens damaged the DNA strand which leads to change in normal sequencing including base modification and double-strand breaks which is difficult to repair, as a results it eventually produced point mutations, insertions and deletion of DNA sequence. Each nucleic acid is composed of a deoxyribose molecule bound to both a phosphate group and either a purine or a pyrimidine. This occurs during a process called protein synthesis. Singular amino acids are the building blocks of life and can be linked to form oligopeptides, polypeptides, and proteins inside the cell. DNA, or deoxyribonucleic acid is a polymer formed of many nucleic acids. The polypeptide definition describes a chain of more than twenty and less than fifty amino acids bound together via covalent peptide bonds. (Physical Geography) the main or central mountain range of a country or region. something that resembles the spinal column in function, position, or appearance. Sugar-phosphate backbone is composed of alternating sugar and phosphate that defines directionality of the molecules which is negatively charged and hydrophilic to allow the DNA backbone to form bonds with water. Deoxyribose is the five-carbon sugar molecule that helps form the phosphate backbone of DNA molecules. (Anatomy) a nontechnical name for spinal column. The stacking interaction shows side-roll-twist, shift-tilt and rise which is more or less constant. ![]() Sugar-phosphate backbone produces energy minima matching by simple replacement of bases such as cytosine, guanine, adenine and thymine which shows mutual base position characteristic of the target sequence and it demonstrates one major degree of freedom consisting of torsion angles chi, delta, zeta and pseudorotation phase angle. The reason of this coiling structure is in order to protect the bases inside it protecting from being damaged from the environment and each turn of this helix is 34nm long in which 10 bases attached per turn. Sugar-phosphate backbone is linked to phosphodiester bond between carbon 4 and CH2 group that attached to phosphate ion thus make the DNA strand as double helix making it twist into a coil. A structural component of DNA that consists of 5-deoxyribose sugars and phosphate groups involved in carrying the genetic code.
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