NEET UG » NEET UG Study Material » Chemistry » Deoxyribose and Ribose

Deoxyribose and Ribose

The physical characteristics of an organism are determined by the nuclear material. Deoxyribonucleic acid is used to construct this nuclear material (DNA). All of an organism's biochemical processes and physical characteristics are determined and regulated by the DNA that is found in the nucleus of each and every cell. All living things have their own unique set of DNA that provides instructions to all of the cell organelles in order for them to accomplish their distinct duties. The sequences of DNA molecules combine to form a DNA strand, which is located in the nucleus in the form of chromosomes, which are the building blocks of life.

Deoxyribose

Deoxyribose, or more technically 2-deoxyribose, is a monosaccharide with the idealised formula H(C=O)(CH2)(CHOH)3H. It is a sugar with the idealised formula H(C=O)(CH2)(CHOH)3H. This sugar is referred to as deoxy sugar since one oxygen atom has been removed from it during its formation from the sugar ribose, as indicated by the name of the sugar. The presence of deoxyribose in DNA is the most prominent feature of this sugar. Because the pentose sugars arabinose and ribose are identical except for their stereochemistry at C2′, the terms 2-deoxyribose and 2-deoxy arabinose are interchangeable, although the latter term is rarely used because ribose, not arabinose, is the precursor to deoxyribose. 2-deoxyribose and 2-deoxy arabinose are synonyms for each other.

Ribose

Its chemical formula is C5H10O5 and its linear-form composition is H(CO)(CHOH)4H. Ribose is a simple sugar and carbohydrate with the molecular formula C5H10O5 and the linear-form composition H(CO)(CHOH)4H. Since d-ribose, in its naturally occurring form, is a component of the ribonucleotides from which RNA is constructed, this chemical is required for the coding, decoding, control, and expression of genes, as well as other processes. It has a structural counterpart in deoxyribose, which is also an important component of DNA and has a comparable function. l-ribose is an artificial sugar that was discovered by Emil Fischer and Oscar Piloty in 1891 and initially used in a laboratory setting. However, it wasn’t until 1909 that Phoebus Levene and Walter Jacobs realised that d-ribose was a natural product, that it was the enantiomer of Fischer and Piloty’s product, and that it was an important component of nucleic acids. Fischer chose the name “ribose” because it is a partial rearrangement of the name of another sugar, arabinose, of which ribose is an epimer at the 2′ carbon; both names also have a connection to gum arabic, which was the source of arabinose when it was first isolated and from which they prepared l-ribose in their experiments.

Difference between Deoxyribose and Ribose

Ribose and deoxyribose are monosaccharides, sometimes known as simple sugars, and are found in plants. They are aldopentoses, and their phosphorylation results in the formation of deoxyribonucleotide and ribonucleotide, respectively. They are extremely important in biology since they aid in the creation of an organism’s blueprint, which is then transmitted down through generations.

The nucleotides serve as the building blocks of nucleic acids and aid in the transmission of genetic information through them. The pentose sugar used by RNA is ribose, which has 5 carbon atoms. Deoxyribose is the pentose sugar used by DNA.

Emil Fischer discovered ribose in the year 1891, and the rest is history. Phoebus Levene discovered deoxyribose in the year 1929, and it was named after him. Some of the distinctions between deoxyribose and ribose, such as their structure, IUPAC names, molar masses, chemical formulas, and so on, are listed in the following section.

Deoxyribose vs Ribose

The following are the most significant distinctions between deoxyribose and ribose:

 

 

Deoxyribose

Ribose

Chemical formula

C5H10O4

C5H10O5

IUPAC name

2-deoxy-D-ribose

(2S,3R,4S,5R)-5-(hydroxymethyl)oxolane-2,3,4-triol

Structure

It has a hydroxyl (OH) group at position 2

It has a hydrogen (H) atom at position 2

Molar mass

134.13 g/mol

150.13 g/mol

Also known as

2-deoxy-D-erythro-pentose

D-Ribose

Discovery

1929 by Phoebus Levene

1891 Emil Fischer

Found in

DNA

RNA

What is Deoxyribose and how does it work?

Deoxyribose is an aldopentose sugar that has an aldehyde group bonded to it, which makes it a sugar alcohol. Achieving this distinction allows the enzymes found within the living body to distinguish between ribonucleic acid and deoxyribonucleic acid.

There is a critical role for deoxyribose products in the field of biology. DNA is the most important source of genetic information in all living things on the planet. Nucleotides are made up of bases such as adenine, thiamine, guanine, and cytosine, among others.

What exactly is Ribose?

Ribose is a pentose sugar that has an aldehyde group bonded to the end of the chain in an open form at the beginning of the chain. The reaction between ribose sugar and a nitrogenous base results in the formation of ribonucleoside. When this ribonucleoside is coupled to a phosphate group, it results in the formation of a ribonucleotide.

It is a normal monosaccharide with one oxygen atom connected to each carbon atom, as is the case with glucose. The ribose sugar can be found in the RNA of living creatures, which is a sugar. The RNA molecule is responsible for both coding and decoding the genetic information contained in DNA.

Conclusion

A chair-like structure is formed by ribose, with one exception: ribose contains an aldehyde functional group, and the ring closure occurs at carbon position 1, which is similar to that of glucose. The only difference is that ribose contains five carbons, resulting in the formation of a structure with five members, also known as a five-membered ring.

Deoxyribose, on the other hand, can exist as a linear molecule or in the shape of a five- or six-membered ring in its structural configuration. Deoxyribose is also referred to as an aldopentose because it has a group of carbonyl at the end of the molecule, which gives the compound its name. It is by the substitution of a phosphate group and a nucleic acid-base on this ring that deoxyribose is able to operate as the primary support or backbone of DNA.

faq

Frequently asked questions

Get answers to the most common queries related to the NEET UG Examination Preparation.

What are some of the applications or uses of ribose?

Ans: Ribose is a type of sugar found in nature that operates as a treatment f...Read full

What is the purpose of Deoxyribose, and what is it formed of, are both important questions.

Ans: Ribose is a sugar component that is produced by the human body and is found in the RNA nucleic acid sequence. D...Read full

Is DNA made up of deoxyribose or ribose sugars?

Ans: Nucleic Acid Synthesis/Breakdown is a term used to describe the process ...Read full

When it comes to ribose in RNA and deoxyribose in DNA, what is the most significant distinction?

Ans: When it comes to sugars, DNA contains the sugar deoxyribose, while RNA contains the sugar ribose. It should be ...Read full