ribose
Definition
Noun: A pentose sugar (a monosaccharide with five carbon atoms) that is a fundamental component of ribonucleic acid (RNA) and certain energy-carrying molecules like ATP.
Usage
"Ribose" is a scientific term used primarily in biochemistry and molecular biology. It refers to the specific sugar molecule that forms the structural backbone of RNA, distinguishing it from the deoxyribose sugar found in DNA.
Examples
- Noun:
- The structure of RNA is characterized by the presence of ribose in its sugar-phosphate backbone.
- ATP, the cell's primary energy currency, contains a ribose sugar unit.
- The difference between a ribonucleotide and a deoxyribonucleotide is the presence or absence of a hydroxyl group on the ribose ring.
Advanced Usage
- "D-ribose": This specifies the natural, biologically active form (stereoisomer) of the sugar found in organisms.
- The supplement contains D-ribose, which is involved in cellular energy production.
- In scientific discourse, "ribose" is often discussed in contrast to "deoxyribose."
- The enzymatic reaction removes an oxygen atom from ribose to form deoxyribose.
Variants and Related Words
- Deoxyribose (n): A sugar similar to ribose but with one less oxygen atom; it is the sugar component of DNA.
- Ribonucleotide (n): A nucleotide containing ribose, which is a building block of RNA.
- Ribosyl (adj): A chemical group derived from ribose, often used in compound names (e.g., ribosyl moiety).
Synonyms
- Pentose sugar (a more general category to which ribose belongs).
Noun
-
a pentose sugar important as a component of ribonucleic acid
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