a detailed physical map depicting the cleavage sites generated by ten different restriction endonucleases was prepared for the argf region of the escherichia coli k-12 genome carried on a 1650 base pair fragment capable of directing the in vitro synthesis of ornithine transcarbamylase ( otcase ; ec 2.1.3.3 ) under the control of arginine holorepressor .
C0012906
restriction endonucleases
C0020289
ec