The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 1995
Filed:
Apr. 30, 1992
Elisabeth A Raleigh, West Somerville, MA (US);
Ellen S Hauck, Lowell, MA (US);
New England Biolabs, Inc., Beverly, MA (US);
Abstract
The present invention relates to a recombinant McrBC endonuclease obtainable from Escherichia coli, two components of which, McrB.sub.L and McrC, have been purified in active form. McrBC is active in the presence of GTP and at a low pH. The McrBC endonuclease is also substantially free of a third component, McrB.sub.S, which is believed to inhibit or otherwise interfere with the activity of the enzyme. McrBC has various desirable properties, including the ability to recognize a methylated DNA sequence and also its ability to cleave such a sequence in the presence of GTP. Also provided is a process for the production of recombinant McrBC endonuclease, a process for the determination of the modification state of DNA a process for the determination of an epigenetic alteration or defect (including 'imprinting'), as well as a process for identifying and isolating additional enzymes that cleave modified DNA.