What gets conserved in sequence?

Question

[am1418]

This may seem a little abstract but I'm in my first real bioinformatics class and I had a conceptual doubt with what really gets conserved in a protein sequence to allow us to use the sequence as a parameter for the actual protein modeling and inferring similarity of different proteins?

Any help would be much appreciated!

Answer 1

[Antonio R. Franco]

Conservation means function... If something is conserved is because it has to have a function