Question

1. what is the 6th amino acid of human myoglobin?

2. what is the 11th amino acid of human myoglobin?

3. what is the 5th amino acid of insulin?

4. what is thr last amino acid of insulin?

5. what is the 4th amino acid of ATPase?

6. what is the 10th amino acid of ATPase?

7. what is thr last amino acid kf ATPase?

Answer 1

Answer 1: The 6th amino acid of human myoglobin is Glycine (Gly, G). In figure it is red in color.

Answer 2: The 11th amino acid of human myoglobin is Valine (Val, V). In figure it is blue in color.

Myoglobin is a monomeric protein that has 154 amino acids residues. It consists of eight α-helicies connected through the turns with an Oxygen binding site. Myoglobin is a single-chain globular protein with the heme prosthetic group in the center. Myoglobin is a cytoplasmic hemoprotein, expressed in cardiac myocytes and oxidative skeletal muscle fibers, which are reversibly bound to an oxygen molecule. Myoglobin mainly functions as an oxygen-storage protein in muscle.

Answer 3: The 5th amino acid of human insulin of chain A is Glutamine (Gln, Q). The 5th amino acid of human insulin of chain B is Histidine (His, H). In figure it is in red box.

Answer 4: The last amino (positioned at 51) acid of human insulin is Threonine (Thr, T) that is present in Chain B. The last amino acid of chain A is Asparagine (Asn, N). In figure it is in green box.

The human insulin protein is composed of 51 amino acids. Insulin is a heterodimer composed of two peptide chains referred to as the A chain and B chain, which are linked together by disulfide bonds. An additional disulfide is formed within the A chain. In most species, the A chain consists of 21 amino acids and the B chain of 30 amino acids. Although the amino acid sequence of insulin varies among species, certain segments of the molecule are highly conserved, including the positions of the three disulfide bonds, both ends of the A chain and the C-terminal residues of the B chain. These similarities in the amino acid sequence of insulin lead to a three dimensional conformation of insulin that is very similar among species, and insulin from one animal is very likely biologically active in other species.

Answer 5: The 4th amino acid of ATPase is Glycine (Gly, G).

Answer 6: The 10th amino acid of ATPase is Tyrosine (Tyr, Y).

Answer 7: The last amino acid of ATPase is Tyrosine (Tyr, Y).

ATPases are a group of enzymes that catalyze the hydrolysis of a phosphate bond in adenosine triphosphate (ATP) to form adenosine diphosphate (ADP). They harness the energy released from the breakdown of the phosphate bond and utilize it to perform other cellular reactions. ATPases are essential enzymes in all known forms of life and have fundamental roles in energy conservation, active transport and pH homeostasis. There are three classes of ATPases, which differ in structure and the type of ion that they transport; F-ATPases (e.g. mitochondrial H+-ATPase), P-ATPases (e.g. Ca2+-ATPase, Na+,K+-ATPase) and V-ATPases (e.g. lysosomal H+-ATPase).