Arginine: Difference between revisions
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{{Image|Arginine stick figure.jpg|right|200px|'''Arginine''', one of the common amino acids.}} | |||
'''Arginine''', abbreviated '''Arg''' or '''R''', is one of the twenty common [[amino acid]]s used by living organisms to build [[protein]]s. It is one of the charged, polar amino acids and it is typically found on the surface of a [[protein structure]]. It is one of only three positively charged amino acids, the other two being [[histidine]] and [[lysine]]. DNA-binding proteins tend to have more arginines and lysines to interact with the negative charges of the [[DNA]] [[phosphate]] backbone. | '''Arginine''', abbreviated '''Arg''' or '''R''', is one of the twenty common [[amino acid]]s used by living organisms to build [[protein]]s. It is one of the charged, polar amino acids and it is typically found on the surface of a [[protein structure]]. It is one of only three positively charged amino acids, the other two being [[histidine]] and [[lysine]]. DNA-binding proteins tend to have more arginines and lysines to interact with the negative charges of the [[DNA]] [[phosphate]] backbone. | ||
The R Group of '''Arginine''' consists of a chain of three carbon atoms and a guanidine group at the end of the chain. | The R Group of '''Arginine''' consists of a chain of three carbon atoms and a guanidine group at the end of the chain. | ||
Latest revision as of 06:15, 8 June 2009
Arginine, abbreviated Arg or R, is one of the twenty common amino acids used by living organisms to build proteins. It is one of the charged, polar amino acids and it is typically found on the surface of a protein structure. It is one of only three positively charged amino acids, the other two being histidine and lysine. DNA-binding proteins tend to have more arginines and lysines to interact with the negative charges of the DNA phosphate backbone.
The R Group of Arginine consists of a chain of three carbon atoms and a guanidine group at the end of the chain.