Application of reductive dihydroxypropylation of amino groups of proteins in primary structural studies: identification of phenylthiohydantoin derivative of epsilon-dihydroxypropyl-lysine residues by high-performance liquid chromatography

Journal of Chromatography
A S AcharyaB N Manjula


The general utility of reductive alkylation of amino groups of proteins with glyceraldehyde (2,3-dihydroxypropionaldehyde) in the presence of sodium cyanoborohydride, i.e. dihydroxypropylation, as an aid in generating arginine peptides of proteins by tryptic digestion has been investigated. The dihydroxypropylation of the amino groups of ribonuclease A and the streptococcal Pep M5 protein proceeds predominantly to the stage of monoalkylation. The derivatized lysine namely, epsilon-dihydroxypropyl-lysine is stable to acid hydrolysis, and is eluted slightly ahead of histidine in the amino acid analyzer. The peptide bonds of epsilon-dihydroxypropyl-lysine residues are resistant to tryptic digestion. The arginine peptides of dihydroxypropylated ribonuclease A, and dihydroxypropylated streptococcal Pep M5 protein have been isolated by reversed-phase high-performance liquid chromatography (HPLC) of the tryptic digest of the derivatized proteins. The phenylthiohydantoin (PTH) derivative of epsilon-dihydroxypropyl-lysine has been prepared. It is eluted at a position intermediate to that of the PTH derivatives of proline and tryptophan in reversed-phase HPLC on DuPont Zorbax ODS columns. Thus the PTH-epsilon-dihydroxypropyl-lysine could...Continue Reading


Nov 27, 1979·Biochemistry·K F GeogheganR E Feeney
Jan 1, 1977·Proceedings of the National Academy of Sciences of the United States of America·A M Nigen, J M Manning
Jul 1, 1977·Archives of Biochemistry and Biophysics·I SchenkeinB Frangione
Jan 1, 1977·Methods in Enzymology·W M Mitchell
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Jul 1, 1983·International Journal of Peptide and Protein Research·A S AcharyaJ M Manning
Sep 1, 1983·Proceedings of the National Academy of Sciences of the United States of America·B N ManjulaV A Fischetti
Jan 1, 1972·Methods in Enzymology·M Z Atassi, A F Habeeb

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