NATS 1610 Lecture Notes - Gene Expression, 2-Step Garage, Peptide
Document Summary
Flow of genetic information: the central dogma-from dna to rna to protein. Dna is hereditary material (genetic material: passed from one generation of cells to the next, carries instructions for assembling proteins (in, genes are segments of dna that carry for assembling proteins genes) information. Gene expression is the 2-step mechanism by which the information in dna is used to make proteins. At least 20 types of trna (20 amino acids) The direction of transcription and the dna strand used varies among genes: the rna transcript is synthesized in the 5" to. 3" direction: and the dna gene template is read in the 3" to 5" direction. General mechanism of transcription: rna polymerase (enzyme, seperates the dna strands nucleotides, newly formed rna transcript (strand) is released from dna (pre mrna, bonds the rna, modifies before entering cytoplasm as mrna. Rna polymerase moves along dna template strand in 3" to 5" direction.
