Wikipedia – Proteins Wikipedia page about Proteins.
Wikipedia – Peptides Wikipedia page about Peptides.
Wikipedia – Amino Acids Description of Amino Acids, their names, and the one-letter code.
Behind The Name For the meanings of names.
IUPAC International Union of Pure and Applied Chemistry (Home page).
IUPAC Nomenclature Page with links to various IUPAC chemical nomenclature sections.
IUPAC Amino Acid Nomenclature For a full description of the one-letter code of Amino Acids.
Wikipedia – The Big Bang Theory
In the Sheldonshirts site you can see all the shirts worn by Sheldon and Leonard in The Big Bang Theory.