Enzymes that cut internal bonds of a polymer. Endonucleases are able to cleave phosphodiester bonds within a
nucleic acid chain by
hydrolysis either randomly or at specific base sequences (cf.
restriction enzymes).
Source:
PAC, 1992, 64, 143
(Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992))
on page 152