BIO 2133 Study Guide - Final Guide: Gene Duplication, Telomere, Epigenetics
9 Nov 2017
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Proteins bind to speci c dna sequences on the promoter and recruit rna polymerase. Made up of bases atg (aug on rna), which codes for methionine. Tells the ribosome where to start reading to build a protein. Controls when, where, and how much rna is made. Transcription factors (aka switch proteins, gene regulatory proteins) bind to switches and the dna folds, bringing transcription factors in contact with the promoter. Cut out of the mrna when axons are pasted together. By putting different combinations of axons together, alternative splicing allows isoforms (slightly different proteins) to be made from the same gene. Tell the ribosome where the protein-coding region ends organization of gene sequences. Transcription regulatory element: where regulatory agents bind (ex. enhancers, silencers) Tend to be before the gene but can be found in other areas (ex. after the gene, on a different chromosome) 5" and 3" untranslated region: get replicated and transcribed but not translated.
