Related words. 1  post verb. 2  post up phrasal verb. 3  post off phrasal verb.  cross-post 1  verb. 1. a public notice, especially one advertising a job Synonyms and related words. Types of advertisement:ad, advert, advertisement...  2. a job that someone is sent somewhere to do, usually in another country Synonyms and related words.
Catalytic RNAs, or ribozymes, are a fossil record of the ancient molecular evolution of life on Earth and still provide the essential core of macromolecule synthesis in all life forms today.
The hammerhead ribozyme is a RNA molecule motif that catalyzes reversible cleavage and joining reactions at a specific site within an RNA molecule.he hammerhead ribozyme carries out a very simple chemical reaction that results in the breakage of the substrate strand of RNA, specifically at C17, the cleavage-site nucleotide. Although RNA cleavage is often referred to as hydrolysis, the mechanism employed does not in fact involve the addition of water.