BIOL 1F25 Lecture Notes - Lecture 10: Methionine, Hydrophile, Transfer Rna
Document Summary
Proto-oncogenes and their protein products: growth factors, protein receptors for growth factors, signalling proteins, transcription factors. Genetic information is stored as dna (genes) in chromosomes. Genetic information is read into rna by transcription. Rna is used to form a protein by the process of translation. Protein performs a specific function in cell. Paired nitrogenous bases on the inside (a&t; g&c) In rna, thymine (t) is replaced by uracil (u) Transcription: formation of rna from dna (a gene) Rna transcript: serves directly as mrna in prokaryotes; processed to become mrna in eukaryotes. Dna strand is read by the enzyme rna polymerase, at the promoter site. This enzyme adds a uracil base the the growing rna when it reads adenine in the dna template. Guanine in the template strand translates to cytosine in the rna. Thymine in the template translated to adenine in the. Rna polymerase attaches to the template strand, reads 3" to 5" and adds the complementary bases.