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

Proteins requirement in diabetes, Q. Proteins requirement in diabetes? ...

Q. Proteins requirement in diabetes? Proteins: Proteins should be provided in adequate amounts to maintain a normal body composition and prevent depletion of lean tissue mass.

Reptiles, biting mechanism in snakes

biting mechanism in snakes

Test cross, TEST CROSS Crossing of F hybrid with its homozygous recessi...

TEST CROSS Crossing of F hybrid with its homozygous recessive parent is called test cross and the progeny of test cross is called test cross progeny. A .      Monohybrid Te

What are the factors to measure such a prediction, You are interested in pl...

You are interested in plant life history evolution, you come across a population of the California poppy that i spolymorphic (mixed) for both iteroparous ans semeparous individuals

Morphological differences between monocot and dicot plants, Q. What are the...

Q. What are the major morphological differences between monocot plants and dicot plants? The main separation criteria between monocots and dicots are: number of cotyledons (see

What is pcr and how does pcr works, What is PCR? How does PCR works? Th...

What is PCR? How does PCR works? The PCR, polymerase chain reaction, is a method to synthesize many copies of specific regions of a DNA molecule known as target-regions. Its in

Describe the importance of neuropsychological tests, Describe the importanc...

Describe the importance of Neuropsychological tests Neuropsychological tests are generally thought of as assessment instrument for a variety of cognitive, perceptual, and motor

How is oil droplet different from micelles, How is oil droplet different fr...

How is oil droplet different from micelles? Also describe the chemical make-up of each.

Minimum difference in height among any two people, Suppose that there are s...

Suppose that there are six pairs of alleles which control height and that every dominant allele adds 5cm to the stature. Assume also that the average height of an adult (with equal

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