Isolation of Specific Transfer Ribonucleic Acids by a General Method Using N-Carboxy Anhydrides

Isolation of Specific Transfer Ribonucleic Acids Vol. 238,No. 8 with or before disulfide bond cleavage; otherwise formation of a thiocyano group would be observed.It appears that action of cyanide at pH 7 will provide a means for selective cleavage of the peptide bond at the cystine amino group.