Which specific enzymatic cleavage is crucial for converting proinsulin to active insulin in the production of genetically engineered human insulin?
A. Cleavage at the N-terminus of the A-chain
B. Cleavage at the C-terminus of the B-chain
C. Removal of the C-peptide by specific endopeptidases
D. Cleavage of disulfide bonds linking A and B chains
Related Questions
Which of these is NOT an advantage of using genetically engineered insulin?
Higher cost compared to animal-derived insulin
Reduced risk of allergic reactions
Larger and more reliable supply
Higher purity
Read the following statements about insulin and choose the option that states all correct statements.
a. Earlier, insulin was extracted from pancreas of slaughtered cattles and pigs
b. Mature insulin do not contain polypeptide C
c. Mature insulin consists of two short polypeptides: chain A and chain B
d. During commercial production of insulin, chain A and B were produced together, extracted and combined by creating disulphide bonds
a, b and c
b, c and d
a, c and d
a, b and d
The term βHumulinβ is used for
Hydrolytic enzyme
Powerful antibiotic
Human insulin
Human Antibodies
If the disulfide bridges in human insulin were broken, what would be the most likely consequence?
Enhanced insulin activity
Loss of insulin activity
No change in insulin activity
Increased insulin synthesis
Which of the following pairs correctly identifies a substance with a glycosidic bond and a substance with a peptide bond, respectively?
A) Cellulose, Keratin
B) Sucrose, Insulin
C) Protein, Fructose
D) Sucrose, Cellulose
Which of the following accurately describes the structure of pro-insulin?
It consists only of A and B peptides connected by disulfide bonds.
It contains only A and B peptides.
It contains A and B peptides connected by C-peptide.
It contains only C-peptide.
Which of these best describes the structure of mature, functional human insulin?
A single polypeptide chain
Two polypeptide chains (A and B) linked by disulfide bonds
Three polypeptide chains (A, B, and C) linked by disulfide bonds
A complex carbohydrate
Consider the following statements about insulin
I. Human insulin is made-up of 51 amino acids arranged in two polypeptide chains
II. The two polypeptide chains are interconnected by two disulphide bridges
III. In mammals including humans, insulin is synthesized as a pro-hormone, which contains an extra stretch called the C-peptide
IV. C-peptide is not present in the mature insulin
Which of the statements given above are correct?
I, II and III
I, III and IV
II, III and IV
I, II, III and IV
Which one of the following is the most suitable, medium for culture of Drosophila melanogaster?
Moist bread
Agar agar
Ripe banana
Cow dung
In the context of producing genetically engineered human insulin, why is the formation of inclusion bodies in E. coli sometimes considered advantageous despite requiring additional processing steps?
A. Inclusion bodies protect insulin from proteolytic degradation within the bacterial cell
B. Inclusion bodies directly facilitate the formation of correct disulfide bonds
C. Inclusion bodies enhance the solubility and secretion of insulin from the bacterial cell
D. Inclusion bodies simplify the purification process by eliminating the need for chromatography