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

Taxonomy.., what is the androcium in china rose ..

what is the androcium in china rose ..

What is fontan operation and modifications, What is Fontan Operation and Mo...

What is Fontan Operation and Modifications ? Earlier reported to have 20 per cent mortality, it has come down to five per cent in specialized centres. In the earlier series th

How different are taenia solium and taenia saginata, Q. Concerning their re...

Q. Concerning their respective intermediate hosts how different are Taenia solium and Taenia saginata? The midway hosts of the Taenia solium are pigs and the intermediate hosts

How does chewing food help to speed up digestion, How does chewing food hel...

How does chewing food help to speed up digestion? Chewing reduces food to portions small sufficient to be swallowed and enhances the surface area of the food for digestive enzy

Total darkness and pea seedlings grown in the light, What differences would...

What differences would you expect to see among pea seedlings grown for 10 days in total darkness and pea seedlings grown in the light for the similar period of time?   The s

Explain covalent structure of rna, Like  DNA RNA  is  a  long  polymer  hav...

Like  DNA RNA  is  a  long  polymer  having  of  nucleotides joined by 3'5' phosphodiester  bonds. Furthermore, there are some differences: ?   The bases in RNA are adenine abbr

Sea Lampreys, #questiHow do the non parasitic lampreys interact with other ...

#questiHow do the non parasitic lampreys interact with other members of their ecosystem in comparison to their parasitic cousinson..

Floral apex, Floral Apex Each plant must pass through a minimal 'ripe...

Floral Apex Each plant must pass through a minimal 'ripeness to flower' stage. That is, even to perceive and respond to a specific photoperiodic regime, a plant must be ready

Illustrate natural and phylogenetic classification, Q. Illustrate Natural a...

Q. Illustrate Natural and Phylogenetic Classification? Natural Classification Natural systems of classification reflect the situation as it might have existed in nature. T

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