[Protein-analysis] how do the proteins work

[menkaur from gmail.com]

hi. i'm searching for an answer how do the proteins work. i've found
stuff in internet which tells what they do, but not how they do it.
i'm interested in answer on the question which of the protein
properties (spatial structure, chemical structure, charge distribution
etc) is the most important one to consider bout protein functions.
why?
thank you