Tetrose
Tetrose
A tetrose is a monosaccharide containing four carbon atoms. The chemical formula for a tetrose is C₄H₈O₄. Tetroses are classified based on the functional group present in the molecule: they can be either aldoses or ketoses.
Types of Tetroses[edit]
Tetroses can be divided into two main types:
- Aldotetroses: These have an aldehyde group at the first carbon atom. Examples include:
* D-Erythrose * D-Threose
- Ketotetroses: These have a ketone group at the second carbon atom. An example is:
* D-Erythrulose
Structure[edit]
Tetroses can exist in both linear and cyclic forms. In their linear form, they have a straight-chain structure, while in their cyclic form, they form a ring structure through an intramolecular reaction between the carbonyl group and one of the hydroxyl groups.
Biological Importance[edit]
Tetroses play a crucial role in various biochemical pathways. For instance, D-Erythrose-4-phosphate is an intermediate in the pentose phosphate pathway, which is essential for the production of nucleotides and amino acids.
Stereochemistry[edit]
Tetroses exhibit stereoisomerism due to the presence of chiral centers. Aldotetroses have two chiral centers, leading to four possible stereoisomers: D-Erythrose, L-Erythrose, D-Threose, and L-Threose. Ketotetroses have one chiral center, resulting in two stereoisomers: D-Erythrulose and L-Erythrulose.
See Also[edit]
References[edit]
External Links[edit]
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