Polypeptide chains undergo some modifications before they become fully functional. Some of these modifications include: proteolytic cleavage, lipidation and glycosylation. Proteolytic cleavage refers to the removal of some amino acids from a polypeptide chain by proteases in order for the protein to become active. An example of a substance that is modified through this process is insulin.
Answer:
Rosalind Franklin made an X-ray image of the DNA molecule, that has revealed the following:
1. The nitrogenous bases are near the center of the DNA molecule
2. DNA molecule is composed out of two strands
3. DNA molecule has the shape of a helix
Watson and Crick made the first model of the DNA molecule based on that very picture. They concluded that the strands are antiparallel and that they are composed of nucleotides.
Explanation:
Answer:
The new amino acid may be the same as the original amino acid or it may be different.
