Table 1.

Diazo compounds that esterify proteins.

Diazo Compound	Protein	Year	Reference
	caseinogen insulin β-lactoglobulin lysozyme	1914 1958	125 130
	polyclonal antibody chymotrypsinogen ribonuclease A pepsin acid proteases prorenin O-sulfotransferase	1960 1961 1965 1966–1968 1972–1973 1980 2015	131 126 127 137,139,140 146–149 151 94
	pepsin	1966	135
	phosphoribosyl pyrophosphate amidotransferase glutaminase A glutamyl transpeptidase	1963 1973 1978	47 48 52–54
	asparaginase	1977	56
	myoglobin subtilisin Yes kinase	2004 2015	54 165
	β-lactoglobulin	2007	174
	ribonuclease A red fluorescent protein	2015	128
	ribonuclease A	2015	129