passages.id: split_1_test_3000_passage
passages.type: progene_text
passages.text: Chitinase I produced predominantly N,N'-diacetylchitobiose and N,N',N"-triacetylchitotriose from colloidal chitin , and the enzyme was inactive to p-NP-beta-D-N-acetylglucosaminide , suggesting that it was an endo - type enzyme .