Sugars in RNA

A pentose sugar. In RNA the sugar is ribose, and in DNA the sugar is deoxyribose, a ribose in which one OH group has been replaced with one H atom (Figure 13-231. 

Figure 1.86 The chemical structure of the sugars in RNA (ribose) and DNA (deoxyribose). Reprinted, by permission, from M. E. Houston, Biochemistry Primer for Exercise Science, p. 30, 2nd ed. Copyright 2001 by Michael E. Houston.

The nucleic acids, rna (ribonucleic acid) and dna (deoxyribonucleic acid), are carbohydrate biopolymers. The repeating sugar in rna is ribose, and in dna it is 2-deoxyribose. 

All nucleic acids consist of covalently linked nucleotides. Each nucleotide has three characteristic components (1) a purine or pyrimidine base (2) a pentose and (3) a phosphate group. The purine or pyrimidine bases are linked to the C-T carbon of a deoxyribose sugar in DNA or a ribose sugar in RNA. The phosphate groups are linked to the sugar at the C-5 and C-3 positions. The purine bases in both DNA and RNA are always adenine (A) and guanine (G). The pyrimidine bases in DNA are thymine (T) and cyto-... 

Ribose Ribose is an aldopentose that is the structural sugar in RNA. Ribose cyclizes into a furanose (five-membered) ring system. The structures of D-ribose and (3-D-ribofuranose are given in Figure 12.66. 

Nucleic acids, both DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), are linear polymers of four bases linked to a sugar-phosphate backbone as shown in Fig. 2.5a. The differences between DNA and RNA reside in the sugar moiety forming the backbone, and in one of the four bases whereas the sugar in RNA is ribose, it is deoxyribose in DNA both molecules contain bases adenine (A), guanine (G), and cytosine (C)... 

The sugar in RNA is ribose (deoxyribose is shown for comparison) Although RNA molecules are generally single-stranded, they contain regions of a double helix produced by the formation of hairpin loops. 

The five-carbon sugar in RNA is ribose, and the sugar in DNA is 2 -deox)Tribose. The only difference between these two sugars is the absence of an hydroxyl group on the 2 carbon of 2 -deoxyribose. The purines in both DNA and RNA are adenine and guanine. Both DNA and RNA contain the pyrimidine cytosine however, the fourth base is thymine in DNA and uracil in RNA. The chemical compositions of DNA and RNA are summarized in Table 24.1. 

The sugar in RNA is ribose and the sugar in DNA is 2-deoxyribose. Most of the bases (adenine, cytosine, and guanine) are the same however, DNA contains thymine whereas RNA contains uracil. 

The five-carbon sugar in RNA is rtbosCy and that in DNA is deoxyribose ... 

Nucleotides consist of a pentose sugar joined to a nitrogen base (purine or pyrimidine) and phosphate group. Nucleic acids are polymerized from nucleotides and consist of ribonucleic acid (RNA) and deoxyribosenucleic acid (DNA). In DNA, the pentose sugar is D-deoxyribose and the bases are adenine, guanine, thymine, and cytosine the pentose sugar in RNA is o-ribose and the bases are adenine, guanine, thymine, and cytosine. There also are other bases that occur infrequently in both RNA and DNA. 

The sugar in RNA is ribose rather than the deoxyribose found in DNA. 

The chemical building blocks for nucleic acids (DNA and RNA) are nucleotides covalently assembled together by 3, S -phosphodiester bonds between adjacent pentose moieties. a2-deoxy-D-ribose is the sugar in DNA and a-D-ribose is the sugar in RNA (see Fig. 2). The 1 -carbon atom of the pentose is linked to one of four nitrogen containing heterocyclic bases adenine (A) or guanine (G), two purines cytosine (C) or thymine (T), two pyrimidines. In RNA uracil (U) replaces thymine. No particular periodicity characterizes the succession of the nucleotides. 

RNA is a polymer of ribonucleotides held together by 3 -5 -phosphodiester bridges. Although it is similar to DNA, it also varies in many aspects of its structure. The sugar in RNA is ribose in contrast to deoxyribose of DNA. It contains Uracil instead of Thymine. It is usually a single stranded stmcture. 

In a nucleic acid polymer, the 3 -hydroxyl group of each ribose sugar in RNA or... 

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