Biology 1002B Lecture Notes - Lecture 14: Ribosomal Rna, Cytosol, Skeletal Muscle
31 May 2016
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Document Summary
Make pictures of genes are relative locations. Make a diagram of gene expression that highlights complementary base pairing. Make a chart comparing proks to euks trna complementary base pairs with dna, itself, other rna. Operons bring several genes under the control of one operator. Gene structure in the nucleus is more complicated than in organelles: enhancer-promoter proximal region-promoter(tatabox)-5"utr- transcription unit-3"utr. Rna polymerase ii does not bind to naked" promoters: binds to protein coding genes. Transcription factors regulate efficiency of polymerase binding. Dna is packaged around histones: controls attractiveness of a promoter. Controls degree to which chromatin is packed: packaged around nucleosomes (complex of histone proteins, controls by adding acetyl (acetylation) groups to the histones. Activates chromatin at promoter: deacetylation makes it less available. Polyadenylation signal is understood as rna (is transcribed) Eukaryotes don"t have termination loop: known as cleavage site, proteins come and cut at the polyadenylation signal site.
