“…The latter enzyme has recently aroused interest as its three-dimensional structure proved to be remarkably similar to that of papain (Baker, 1977(Baker, , 1980. Cysteine proteinases are also synthesized during germination of plant seeds (see, for example, Baumgartner & Chrispeels, 1977); they are produced by bacteria, for instance streptococcal proteinase (Liu & Elliott, 1965), and they are found among cathepsins, such as cathepsin B (Keilova & Turkova, 1970).…”
“…The latter enzyme has recently aroused interest as its three-dimensional structure proved to be remarkably similar to that of papain (Baker, 1977(Baker, , 1980. Cysteine proteinases are also synthesized during germination of plant seeds (see, for example, Baumgartner & Chrispeels, 1977); they are produced by bacteria, for instance streptococcal proteinase (Liu & Elliott, 1965), and they are found among cathepsins, such as cathepsin B (Keilova & Turkova, 1970).…”
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