<prompt> The enzyme not involved in substrate level phosphorylation is:Succinyl thiokinasePhosphofructokinasePyruvate kinasePhosphoglycerate kinase  <response>: Refer: Harpers Illustrated Biochemistry, 27th edition, pg no: 172 185Oxidative phosphorylationThe energy released as a result of biological oxidation is trapped in the form of higher energy phosphate bonds in ATP by phosphorylation of ADP. 