Figure 4 is a Chou, Fasman, and Rose analysis to predict the secondary structure of histone H1. Click on the genus-species name for each animal to view their histone H1 amino acid sequence. The common names of the animals used for the comparison are given to the right. Click on the genus-species names above to view the histone H1 amino acid sequence for each species. As one would expect, human and mouse histone H1 are very similar.
All animals seems to have high similarity.
This could mean that the shape of histone H1 can not very greatly and still function correctly.