BIOL 1081 Lecture Notes - Lecture 31: Prokaryote, Polyadenylation, Endonuclease
Document Summary
It was originally stated as the one gene-one enzyme hypothesis by the us geneticist george beadle in 1945 but later modified when it was realized that genes also encoded nonenzyme proteins and individual polypeptide chains. There are 3 major classes of such biopolymers: Dna and rna (both nucleic acids), and protein. There are 9 conceivable direct transfers of information that can occur between these. Rna protein: some virus species are so primitive that they use only rna proteins, having not developed dna, prions, a new exception to the central dogma has been discovered, protein protein. That is, proteins directly replicating themselves by making conformational changes in other proteins: types of rna: Messenger rna (mrna) carries the genetic information copied from dna in the form of a series of 3-(cid:271)ase (cid:272)ode (cid:862)words,(cid:863) ea(cid:272)h of whi(cid:272)h spe(cid:272)ifies a parti(cid:272)ular a(cid:373)i(cid:374)o acid. Transfer rna (trna) is the key to deciphering the code words in mrna.
