BIOL 4230 Lecture Notes - Lecture 6: Small Nuclear Rna, Telomerase Rna Component, Non-Coding Rna
Document Summary
Functional rnas: rna catalysts, mirna sirna srna, rnai. Rnas have many functions: mrna (messenger rna, other ribozymes, telomerase rna (telomerase maintenance) sirna (small interfering rna - rna silencing) shrna (short hairpin - rna silencing, pri-mirna; mirna ((primary) microrna - regulation, genomic rna (viruses) Riboswitches: rna species that can bind metabolites/ions, binding of substrates regulates mrna expression. Some argue that they are leftovers from the "rna world: transcriptional termination, translation repression/initiation, mrna stability, regulate ~2% b. subtilis genes, also present in eukaryotes. Its - internally transcribed spacer: the intergenic spacers (igs) are located between the transcription units, structure of a. thaliana 5. 8s rdna units. Internal control region (icr) contains the internal promoter consisting of box a (a), intermediate element (ie), and box c (c : the motifs required for transcription, tata, gc, and c nt are positioned at -28, -13, and -1.
