Sulfoquinovose, also known as 6-sulfoquinovose and 6-deoxy-6-sulfo-
D-glucopyranose, is a
monosaccharide sugar that is found as a building block in the
sulfolipid sulfoquinovosyl diacylglycerol (SQDG). Sulfoquinovose is a
sulfonic acid derivative
In mathematics, the derivative of a function of a real variable measures the sensitivity to change of the function value (output value) with respect to a change in its argument (input value). Derivatives are a fundamental tool of calculus. ...
of
glucose
Glucose is a simple sugar with the molecular formula . Glucose is overall the most abundant monosaccharide, a subcategory of carbohydrates. Glucose is mainly made by plants and most algae during photosynthesis from water and carbon dioxide, u ...
, the sulfonic acid group is introduced into the sugar by the
enzyme
Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products ...
UDP-sulfoquinovose synthase
UDP-sulfoquinovose synthase () is an enzyme that catalyzes the chemical reaction
:UDP-glucose + sulfite \rightleftharpoons UDP-6-sulfoquinovose + H2O
Thus, the two substrates of this enzyme are UDP-glucose and sulfite, whereas its two products ...
(SQD1). Sulfoquinovose is degraded through a metabolic process termed
sulfoglycolysis. The half-life for mutarotation of sulfoquinovose at pD 7.5 and 26C is 299 minutes.
See also
*
Sulfolipid
*
Sulfoglycolysis
References
{{Reflist
Sulfonic acids
Deoxy sugars
Monosaccharides
Sulfate esters