Are peanut proteins similar to chicken meat proteins?
I posted an answer to a similar question here: https://health.stackexchange.com/questions/9124/is-all-protein-the-same/9130#9130


  You're not using protein as it is to maintain your body. It's first
  broken down to the individual amino acids, which your body can then
  use to build new stuff.
  
  If you're lacking one of the essential amino acids, you can only build
  as much new protein until that runs out, and all the other amino acids
  are just excess. A protein that contains all the necessary amino acids
  is called a complete protein, and you could calculate the differences
  in the so-called quality of the protein.
  
  A perfect protein (i.e. from egg/milk/soy) will contain amino acids in
  exactly the ratio you need, some protein contains so little of a
  certain amino acid that you'd need to eat twice as much of that
  protein (for example rice or peanuts).
  
  In your case, if beef is making you recover fastest, you'd need to eat
  30*0.92/0.70 = 39g of peas for the same effect.
  
  You could get around this by combining different sources of protein.
  For example grains are limited in lysine, while beans are limited in
  cysteine/methionine.