What is low - density lipoprotein receptor pathway, Biology

Assignment Help:

Q. What is low - density lipoprotein receptor pathway?

Ans.

The increasing cellular free cholesterol generated regulates the activities of two enzymes that are of crucial importance in cholesterol homeostasis. HMG-CoA reductase (the major rate-determining enzyme in the cholesterol synthetic pathway) is inhibited, reducing cholesterol synthesis. Acyl CoA: cholesterol acyl transferase (ACAT) is activated, thus facilitating the re-esterification of cholesterol to cholesterol ester.

Thus the LDL receptor pathway is a closely integrated system by which cells acquire cholesterol and cellular cholesterol homeostasis is maintained. The therapeutic potential of interrupting this pathway will become apparent when the statin drugs which are inhibitors of HMG-CoA reductase are discussed.

It is the activity of LDL receptors in the liver that largely controls plasma LDL levels. Approximately 70 per cent of LDL is removed by this pathway.


Related Discussions:- What is low - density lipoprotein receptor pathway

Foliose lichen stage - xerarch, Foliose Lichen Stage - Xerarch As ment...

Foliose Lichen Stage - Xerarch As mentioned earlier, the weathering of the rocks and the decaying of the crustose lichens results in the formation of soil on the otherwise bar

How two organisms are interdependent, Give an example of how two organisms ...

Give an example of how two organisms are interdependent. Animals generate carbon dioxide and water, which is required by plants. Accept all reasonable answers.

Explain about pre-surgical prosthodontics, Pre-surgical Prosthodontics ...

Pre-surgical Prosthodontics Radiographic investigation: The radiologic investigations are critical to evaluate the bone quality and bone quantity. 1. Panoramic Radiograph

An mrna molecule codifies only one type of protein, An mRNA molecule codifi...

An mRNA molecule codifies only one type of protein? Eukaryotic cells have monocistronic mRNA, i.e., every mRNA codifies only one polypeptide chain. Prokaryotes can present poly

Illustrate the important rules of nomenclature, Q. Illustrate the Important...

Q. Illustrate the Important rules of nomenclature? Nomenclature is allied to taxonomy as it deals with the determination of the correct name to be applied to a known taxon. The

What is meant by the substrates of enzymatic reactions, Q. What is meant by...

Q. What is meant by the substrates of enzymatic reactions? The Substrates are reagent molecules upon which enzymes act. The enzyme has spatial binding sites for the attachmen

excreation, ARE BONY FISHES AMMONOTELIC?

ARE BONY FISHES AMMONOTELIC?!

Illustrate the electrophysiology and ion transport of cornea, Illustrate th...

Illustrate the electrophysiology and ion transport of cornea? Electrophysiology and ion transport of cornea: The trans-epithelial potential is 25-35 mV. It is almost 50 p

Define peri-implantitis, What is peri-implantitis? Peri-implantitis as ...

What is peri-implantitis? Peri-implantitis as defined by Meffert is the progressive loss of peri-implant bone as well as soft tissue inflammatory changes. Bacterial invasion of

Cell biology, is the study of internal structure of cell included in cell b...

is the study of internal structure of cell included in cell biology or anatomy?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd