What is a Ketotetrose?
What is a Ketotetrose?
ketotetrose. Definition : A tetrose having a single ketone group at the 2-position. ketose. Definition : Ketonic parent sugars (polyhydroxy ketones H[CH(OH)] n C(=O)[CH(OH)] m H) and their intramolecular hemiketals. monosaccharide.
Which monosaccharide is an Ketotetrose?
Definition : Parent monosaccharides are polyhydroxy aldehydes H[CH(OH)] n C( 2 O)H or polyhydroxy ketones H 1 [CHOH] n 1 C( 2 O)[CHOH] m 1 H with three or more carbon atoms….CHEBI:63406 – ketotetrose derivative.
| ChEBI Name | ketotetrose derivative |
|---|---|
| Stars | This entity has been manually annotated by the ChEBI Team. |
Is Ketotetrose D or L?
There are two naturally occurring stereoisomers, the enantiomers of erythrose and threose having the D configuration but not the L enantiomers. The ketotetroses have one chiral center and, therefore, two possible stereoisomers: erythrulose (L- and D-form). Again, only the D enantiomer is naturally occurring.
What are examples of ketose?
Examples of ketoses
- Trioses: dihydroxyacetone.
- Tetroses: erythrulose.
- Pentoses: ribulose, xylulose.
- Hexoses: fructose, psicose, sorbose, tagatose.
- Heptoses: sedoheptulose.
- Octoses: D-manno-octulose (the basis for KDO)
- Nonoses: D-glycero-D-galacto-nonulose (the basis for neuraminic acid)
What are examples of Ketotetrose?
An example of a ketotetrose is Erythrulose. Erythrulose has the chemical formula of C4H8O4. It is often used in self-tanning products. Pentoses: Ribulose, Xylulose A Pentose is a general term to define a monosaccharide containing five carbons.
What are tetroses examples?
Naturally-occurring tetroses are D-erythrose, D-threose, and D-erythrulose. The erythrose, C4H8O4, is a tetrose with one aldehyde group. It was first isolated by French pharmacist Louis Feux Joseph Garot in 1849. The erythrose 4-phosphate is a metabolite in the Calvin cycle and in the pentose phosphate pathway.
What are Epimers give example?
Epimers are carbohydrates which vary in one position for the placement of the -OH group. The best examples are for D-glucose and D-galactose. Both monosaccharides are D-sugars, meaning that the -OH group on carbon-5 of these hexoses is located on the right in Fischer Projection.
What are the functional groups in a Ketotetrose?
A ketotetrose, in contrast, is a tetrose with a ketone functional group located in position 2. Naturally-occurring tetroses are D-erythrose, D-threose, and D-erythrulose. The erythrose, C4H8O4, is a tetrose with one aldehyde group.
How many stereoisomers are possible for Ketotetrose?
A Keto-tetrose is a tetrose that has a ketone functional group attached to Carbon 2 of the straight chain. A ketotetrose has 2 stereoisomers because it has one chiral center. An example of a ketotetrose is Erythrulose.
Which is the example of Ketotriose?
dihydroxyacetone
An example of a natural ketotriose is dihydroxyacetone (DHA) (a.k.a. glycerone, formula: C3H6O3). DHA is a biochemical compound that takes a role in different metabolic pathways, e.g. glycolysis.
What is an example of a ketose sugar?
The monosaccharides or simple sugars that contain only one ketone group in its chemical structure is called ketose sugar. Some of the examples of ketose sugars are fructose, xylulose, and ribulose. One of the most important ketose sugar is fructose.
How many stereoisomers are there in The ketotetroses?
There are two naturally occurring stereoisomers, the enantiomers of erythrose and threose having the D configuration but not the L enantiomers. The ketotetroses have one chiral center and, therefore, two possible stereoisomers: erythrulose ( L – and D -form).
How many carbon atoms are in a tetrose?
Jump to navigation Jump to search. A tetrose is a monosaccharide with 4 carbon atoms. They have either an aldehyde functional group in position 1 (aldotetroses) or a ketone functional group in position 2 (ketotetroses).
Are there two possible types of tetrose enantiomers?
Tetrose. There are two naturally occurring stereoisomers, the enantiomers of erythrose and threose having the D configuration but not the L enantiomers. The ketotetroses have one chiral center and, therefore, two possible stereoisomers: erythrulose ( L – and D -form). Again, only the D enantiomer is naturally occurring.
How are tetrose sugars used in the body?
There are a few known ways that tetrose sugars are used in nature. Some are seen in metabolic pathways and others are known to affect certain enzymes. One of the metabolic pathways that a tetrose is involved in is the Pentose Phosphate Pathway.