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

Ecology and ecosystem, Ecology and Ecosystem The concepts of environme...

Ecology and Ecosystem The concepts of environment, ecology, ecosystem, energy flow and nutrient cycling in the foundation course on Science and Technology. As you are aware ec

Reasons for growth of population, REASON S FOR GROWTH OF POPULATION - ...

REASON S FOR GROWTH OF POPULATION - The human population explosion is mainly a result of reduced death rate. Main reasons for it are - 1 .       Protection from natura

Explain the role of dietitian''s in feeding dilemmas, Explain the role of d...

Explain the role of dietitian's in feeding dilemmas Usually, the dietitian's role in  feeding dilemmas is seen as secondary and the physician's role  is the  focus. In reality,

Viral genome, describe the different types of genomes that viruses can have...

describe the different types of genomes that viruses can have

Determine the nature and degree of abnormality, Determine the Nature and De...

Determine the Nature and Degree of Abnormality The nature and degree of abnormality will effect normal neural growth and maturational outcome. For example, in an adult damage t

Define risk of stress fracture among athletes, Define risk of stress fractu...

Define risk of stress fracture among Athletes? There is an increased risk of stress fracture among athletes which is associated with lower calcium intake and lower bone density

Eating foods with high sweetness, Why would a tongue not detect mild sweetn...

Why would a tongue not detect mild sweetness after eating foods with high sweetness? This happens due to of the "desensitization" of sensory receptors on the sensory cells of y

Sterilization of apparatus for microbiology experiments, Sterilization of A...

Sterilization of Apparatus for Microbiology Experiments : Containers of dangerous biological materials and the doors leading to laboratories or rooms in which work with pathogenic

Determine about the halstead''s method, Determine about the Halstead's meth...

Determine about the Halstead's method Reitan adopted Halstead's methods and various test procedures and with them established a laboratory at the University of Indiana. He supp

Hyphae and the mycelium of pluricellular fungi, Q What are the hyphae and t...

Q What are the hyphae and the mycelium of pluricellular fungi? The major structures of pluricellular fungi are the hyphae threadlike filaments made of contiguous uni or multinu

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