Register
People with sickle cell anemia have one incorrect amino acid in their beta chain. The first seven amino acids in the beta chain for hemoglobin A (normal) and hemoglobin S (sickle cell) are listed below.
159k views
4 votes
People with sickle cell anemia have one incorrect amino acid in their beta chain. The first seven amino acids in the beta chain for hemoglobin A (normal) and hemoglobin S (sickle cell) are listed below. Which amino acid is different in hemoglobin S?

User RobertAalto
by
3.2k points

1 Answer

0 votes

Answer: Valine

Step-by-step explanation:

hemoglobin A (normal) is HbA, while hemoglobin S (present in people with sickle cell anemia) is HbS

A sequence of 146 amino acids is present in the Hemoglobin.

The first 6 amino acids in HbA are: valine, histidine, leucine, threonine, proline, and glutamic acid.

The first six amino acids in HbS is:

valine, histidine, leucine, threonine, proline, and VALINE

In Hbs, the 6th amino acid (Glutamic acid) has already been mutated to Valine, a nonpolar, branched amino acid.

User Keller
by
3.8k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.5m questions

4.5m answers

Other Questions

Gibberellic acid stimulates the cells of germinating grass seeds to produce mrna molecules that code for hydrolytic enzymes. In this case the role of gibberellic acid can best be described as that of
Name three ecosystem services provided by biodiversity.
As in most areas of biology, the study of mitosis and the cell cycle involves a lot of new terminology. Knowing what the different terms mean is essential to understanding and describing the processes
Climate change is a ___ environmental change
Which subsystems are most effected by this use of water
Link Copied!