Located near the center of the US population, Northwest Arkansas is, quite simply, in the middle of everywhere. There are several Midwestern markets within a half-day's drive, including Kansas City, St. Louis, Dallas-Fort Worth, Little Rock, Tulsa, and Oklahoma City.
Restriction enzyme. A restriction enzyme or restriction endonuclease is an enzyme that cuts DNA at or near specific recognition nucleotide sequences known as restriction sites.
Restriction enzymes are DNA-cutting enzymes found in bacteria (and harvested from them for use). Because they cut within the molecule, they are often called restriction endonucleases.In order to be able to sequence DNA, it is first necessary to cut it into smaller fragments.estriction enzymes are DNA-cutting enzymes found in bacteria (and harvested from them for use). Because they cut within the molecule, they are often called restriction endonucleases.