What are cd4 lymphocytes, Biology

Assignment Help:

What are CD4 lymphocytes? What is the relationship between these cells and HIV? How does HIV replicate?

CD4 lymphocytes are T helper lymphocytes that there in their plasma membrane receptor proteins known as CD4.

CD4 lymphocytes are the cells that HIV infects and within which the virus replicates. HIV has proteins in its capsule that bind to the CD4 receptors of lymphocytes. By that bond the virus fuses with the cell membrane and its content (RNA, protease, reverse transcriptase, etc.) penetrates into the cytoplasm and the viral replication process begins.

HIV RNA is then changed into DNA by the reverse transcriptase. The new DNA is inserted into the genetic material of the lymphocyte with the aid of enzymes known as integrases. By transcription and translation this DNA commands the synthesis of proteins essential for the assemblage of new viruses. Long polypeptides are therefore produced and then fragmented into proteins and viral enzymes by the enzyme protease. So new HIV viruses are assembled and break the cell membrane to gain the circulation.

 


Related Discussions:- What are cd4 lymphocytes

What is primary growth in shoot, What is Primary Growth in Shoot? The ...

What is Primary Growth in Shoot? The growth in height of a plant stem results from the division of cells at the apex, or tip of the stem, called the shoot tip. Here, a group o

Describe wide split s in details, Describe Wide Split S in details? It ...

Describe Wide Split S in details? It is a persistent split that widens on inspiration to at least 60 msec. May be due to delay in P, e.g. RBBB or due to early A, as occasionall

Quantitative or analytical method for estimation of nitrogen, Define Quanti...

Define Quantitative or Analytical Method for Estimation of Nitrogen and Protein? You may recall reading earlier that proteins contain nitrogen along with carbon, hydrogen and s

Describe physical inactivity in lifestyle risk factors, Describe Physical I...

Describe Physical Inactivity in lifestyle risk factors? Prospective epidemiological studies have shown that a sedentary lifestyle is associated with an adverse effect on the ri

Colony collapse disorder in honey bees, Q. Colony collapse disorder in hone...

Q. Colony collapse disorder in honey bees? Honey bees (Apis mellifera) are social insects and live in colonies in hives. Honey bees were introduced from Europe to the USA to po

Define equilibrium between two solid phases and a gas phase, Define Equilib...

Define Equilibrium between two solid phases and a gas phase? Consider the following reaction equilibrium: 3 CuO(s) + 2NH 3 (g) ↔ 3 Cu(s) + 3H 2 O (g) + N 2 (g) Accordin

Define phenolic acids and derivatives, Define Phenolic Acids and Derivative...

Define Phenolic Acids and Derivatives? Two families of phenolic acids are widely distributed in plants: a range of benzoic acid derivatives and those derived from cinnamic acid

Which is the normal sign of the electric charge, Which is the normal sign o...

Which is the normal sign of the electric charge among the two sides of the neuron plasma membrane? What is the potential difference (voltage) generated among these two sides? What

Define oven - nutritional biochemistry, Define Oven - Nutritional Biochemis...

Define Oven - Nutritional Biochemistry? Oven is a general term used to describe a chamber or enclosed compartment for heating, baking, or roasting food, as in a stove, or for f

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