Metabolism of fructose, Biology

Fructose is an abundant sugar in the human diet; sucrose (table sugar) is a disaccharide that when hydrolyzed yields glucose and fructose and fructose is also a major sugar in honey and fruits. There are two pathways for the metabolism of fructose; one happens in muscle and adipose tissue and the other in liver.

1.  In adipose and muscle tissue, fructose can be phosphorylated by hexokinase (that is capable of phosphorylating both glucose and fructose) to form fructose 6-phosphate that then enters glycolysis.

2.  In liver, the cells hold mainly glucokinase instead of hexokinase and this enzyme phosphorylates only glucose.  Thus in liver, fructose is metabolized instead through the fructose 1-phosphate pathway.

-   Fructose is transformed to fructose 1-phosphate by fructokinase.

-   Fructose 1-phosphate is then change into glyceraldehyde and dihydroxyacetone   phosphate   through   fructose   1-phosphate    aldolase.   The   dihydroxyacetone will feeds into glycolysis   at the triose   phosphate   isomerase   step.

 

Posted Date: 4/12/2013 12:50:44 AM | Location : United States







Related Discussions:- Metabolism of fructose, Assignment Help, Ask Question on Metabolism of fructose, Get Answer, Expert's Help, Metabolism of fructose Discussions

Write discussion on Metabolism of fructose
Your posts are moderated
Related Questions
C4 plants are more efficient in photosynthesis than C3 plants due to: 1. Higher leaf area 2. Presence of larger number of chloroplasts in the leaf cells 3. Presence of thi

Despite having a great biodiversity why is the Amazon Rainforest under risk of desertification? The natural soil of the Amazon Rainforest is not very fertile but it is enriched

Animal wastes Large quantities of animal wastes are available in the country but generally they are low in nutrient content with poor feeding value to the animals. However, po

What is PCR? How does PCR works? PCR, polymerase chain reaction, is a process to synthesize many copies of exact regions of a DNA molecule known as target-regions. Its inventor

What are the main events of the first mitotic period? The first mitotic period is prophase. During prophase the following events happen: migration of each centriole pair (centr

Which are the plant tissues that form the plant roots? The roots have a central portion known as medulla made of vascular tissue (inner xylem and outer phloem). The medulla is

Q. Which is the kingdom of the parasites that cause malaria and Chagas' disease? Those maladies are caused by the protozoans, beings of the kingdom Protista. Q. What is the

(a) What are the intermediate products of anaerobic respiration in an active muscle? (b) Which of them is associated with oxygen debt? (c) In what way is th

biostatistical application in biotechnology

Birth control pills maintain a high blood level of estrogen and progesterone. What is happening in the ovary when the blood level of estrogen is high? How is the uterus responding?