we have used n-acetylaminoacyl esters of amp as models for the 3 ' terminus of trna and find that glycine and the l amino acids consistently distribute predominantly to the 3 ' position ( approximately equal to 67 % 3 ' , approximately equal to 33 % 2 ' ) , but d amino acids distribute to that position generally to a lesser extent and in a manner inversely related to the hydrophobicity of the amino acid side chain .
C0017890
glycine
C0002520
amino acid