List the following proteins in the order of decreasing evolutionary conservativeness of their primary structure:
- Catalytic subunit of a DNA – polymerase.
- Histone H1.
- Prolamines (storage proteins of cereals).
What I think : I am sure that 4th one should be last. I believe that H1 sequence is not that important as I had read somewhere that a cell can survive even without H1 histone. I also think that catalytic subunit is most important. So, according to me the order should be : 2,1,3,4.
Am I right ?