The 21 proteinogenic Î±-amino acids found in eukaryotes, grouped according to their side chains' pKa values and charges carried at physiological pH 7.4. Amino acids are organic compounds containing amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid. The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen, though other elements are found in the side chains of certain amino acids.
Kate in her final days at St Andrew's school, where she had an established circle of friends. When Kate Middleton asked her wedding guests to donate to an anti-bullying charity, the message seemed clear.
Kate Middleton: Who is Britain's Future Princess? Prince William's girlfriend Kate Middleton attends day six of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 28, 2008, in London. NEW YORK (CBS/AP) The wait is over - Britain's Prince William and his longtime girlfriend Kate Middleton have announced their engagement. Royal officials announced Tuesday that William and Middleton got engaged last month during a holiday in Kenya, and will marry next spring or summer in London.