3.2.1.17 (GlcNAc)6 + H2O - Rhea americana (GlcNAc)3 and smaller amounts of (GlcNAc)2 and (GlcNAc)4 endo-splitting, hydrolyzes preferentially the third glycosidic linkage from the nonreducing end ? 380807 3.2.1.17 4-methylumbelliferyl tetra N-acetyl-beta-chitotetraoside + H2O a synthetic fluorogenic substrate Hirudo medicinalis 4-methylumbelliferol + tetra N-acetyl-beta-chitotetraose - ? 429767 3.2.1.17 4-methylumbelliferyl tetra N-acetyl-beta-chitotetraoside + H2O a synthetic fluorogenic substrate Hirudo verbana 4-methylumbelliferol + tetra N-acetyl-beta-chitotetraose - ? 429767 3.2.1.17 4-methylumbelliferyl tetra N-acetyl-beta-chitotetraoside + H2O a synthetic fluorogenic substrate Hirudo orientalis 4-methylumbelliferol + tetra N-acetyl-beta-chitotetraose - ? 429767 3.2.1.17 4-methylumbelliferyl-beta-D-N,N',N''-triacetylchitotrioside + H2O - Gallus gallus ? - ? 372031 3.2.1.17 4-methylumbelliferyl-beta-D-N,N',N''-triacetylchitotrioside + H2O - Musca domestica ? - ? 372031 3.2.1.17 cell wall of Bacillus subtilis + H2O - Hirudo medicinalis ? - ? 447274 3.2.1.17 cell wall of Escherichia coli + H2O - Penaeus penicillatus ? - ? 447275 3.2.1.17 cell wall of Escherichia coli + H2O - Hirudo medicinalis ? - ? 447275 3.2.1.17 cell wall of Micrococcus luteus + H2O - Penaeus penicillatus ? - ? 447276