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How many genes are there for the four polypeptides in haemoglobin?

Human hemoglobin consists of four polypeptide chains: two alpha (α) and two beta (β) chains. The genes responsible for these chains are HBA1 and HBA2 for the alpha chains, and HBB for the beta chains. Therefore, there are three genes associated with the four polypeptides in hemoglobin.


How does sickel hemoglobin differ from normal hemoglobin?

6th amino acid is changed in haemoglobin chain due to a recessive mutation on beta haemoglobin producing gene


What mutations does beta-thalassemia have on DNA?

Beta-thalassemia is typically caused by mutations in the HBB gene located on chromosome 11. Common mutations include point mutations, deletions, or insertions in the HBB gene, leading to reduced or absent production of beta-globin chains in hemoglobin. These mutations disrupt the normal structure and function of hemoglobin, resulting in anemia and other symptoms associated with beta-thalassemia.


What type of secondary structure does hemoglobin have?

Hemoglobin is a protein with a combination of secondary structures, predominantly consisting of alpha helices and beta sheets. These structural elements help maintain the shape and function of hemoglobin as a globular protein.


What level of molecular organization is a beta-folded sheet?

A beta-folded sheet is a secondary structure of a protein, which is the next level of molecular organization above the primary structure. It is formed by hydrogen bonding between adjacent segments of a polypeptide chain, creating a flat and elongated sheet-like structure.

Related Questions

Hemoglobin S differs from hemoglobin A in that?

glutamic acid is replaced by valine in the beta chain


What is Fetal hemoglobin?

Fetal hemoglobin has a pair of gamma-globin molecules in place of the typical beta-globins of adult hemoglobin


What is Hemoglobin S?

Hemoglobin produced in association with the sickle cell trait; the beta-globin molecules of hemoglobin S are defective.


Can paper shield beta particles?

Beta particles are not stopped by a paper sheet.


What is the Life span for hemoglobin SC disease or hemoglobin S beta thalassemia?

4 months


How is hemoglobin constructed?

Normal adult hemoglobin has a pair each of alpha-globin and beta-globin molecules


What are the key differences between a parallel beta sheet and an antiparallel beta sheet in protein structure?

In a parallel beta sheet, the strands run in the same direction, while in an antiparallel beta sheet, the strands run in opposite directions. This affects the hydrogen bonding pattern and overall stability of the protein structure.


How can you prevent beta particles?

Thin sheet or plastic may prevent beta particles.


How many globin molecules are in each hemoglobin?

There are four nearly-identical individual protein chains in hemoglobin.


How many genes are there for the four polypeptides in haemoglobin?

Human hemoglobin consists of four polypeptide chains: two alpha (α) and two beta (β) chains. The genes responsible for these chains are HBA1 and HBA2 for the alpha chains, and HBB for the beta chains. Therefore, there are three genes associated with the four polypeptides in hemoglobin.


How many binding sites does oxygen have?

Oxygen has two binding sites in a hemoglobin molecule: one on each of the two alpha-beta dimers. This allows each hemoglobin molecule to bind and carry up to four oxygen molecules.


How does sickel hemoglobin differ from normal hemoglobin?

6th amino acid is changed in haemoglobin chain due to a recessive mutation on beta haemoglobin producing gene