passages.id: split_4_test_871_passage
passages.type: progene_text
passages.text: CwlH produced in Escherichia coli harboring a cwlH plasmid is an N-acetylmuramoyl-L-alanine amidase ( EC 3.5.1.28 ) and exhibited an optimum pH of 7.0 and high - level binding to the B. subtilis cell wall .