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EC 3.4.24.39 Details
EC number
3.4.24.39
Accepted name
deuterolysin
Reaction
Preferential cleavage of bonds with hydrophobic residues in P1′, also Asn3┼Gln and Gly8┼Ser bonds in insulin B chain
Other name(s)
Penicillium roqueforti protease II, microbial neutral proteinase II, acid metalloproteinase, neutral proteinase II, Penicillium roqueforti metalloproteinase
CAS registry number
247028-11-1
Comment
Proteolytic activity found in Penicillium roqueforti [4], P. caseicolum [4], Aspergillus sojae [3] and A. oryzae [1,5]. Optimum pH of 5 for digesting various proteins. Strong action on protamine and histones. Insensitive to phosphoramidon. About 20 kDa. A distinct Aspergillus sojae endopeptidase is larger and has a neutral pH optimum. Type example of peptidase family M35. Formerly included in EC 3.4.24.4
History
created 1972 as EC 3.4.24.4, part transferred 1992 to EC 3.4.24.39
EC Tree
3.4.24.2 created 1972, deleted 1992
3.4.24.4 created 1972 [EC 3.4.99.13 and EC 3.4.99.22 both created 1972, incorporated 1978], deleted 1992
3.4.24.5 created 1978, deleted 1989
3.4.24.8 created 1978, deleted 1992
3.4.24.9 created 1978, deleted 1992
3.4.24.10 created 1972 as EC 3.4.99.12, transferred 1978 to EC 3.4.24.10, deleted 1992