BIOL 2051 Chapter : Chapter 8

15 views8 pages
15 Mar 2019
School
Course
Professor

Document Summary

Rna synthesis: transcription, making an rna copy of part of a dna strand. Differences between dna & rna: dna is made of deoxyribonucleotides. 1: double-stranded, thymine, deoxyribose sugar, rna is made of ribonucleotides, single-stranded, uracil, ribose sugar. Average 1000-1500 bases long trna (transfer rna) Carries amino acids to the ribosome to build a protein during translation: ribosomal rna (rrna) Dna into rna at that site: promoter is dna sequence that indicates the start of the gene, bacterial rna polymerase. 4 subunits: a (2 copies), , ", . Function is to help core enzyme locate promoter: beginning of gene. Multiple sigma factors (over 100 known so far from numerous species) sigma70. Housekeeping sigma factor used for most essential genes: sigma32. Active when cell is stressed by heat: heat-shock response. Transcription initiation: sigma factor binds core rna polymerase. Forms rna polymerase holoenzyme: rna polymerase binds promoter.

Get access

Grade+
$40 USD/m
Billed monthly
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
10 Verified Answers
Class+
$30 USD/m
Billed monthly
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
7 Verified Answers

Related Documents

Related Questions