BIOL 4374 Lecture 7: Chapter 7

41 views4 pages

Document Summary

Central dogma of molecular biology: present in all cells: bacteria humans, defining characteristic of living cells, amplification of signals from one gene. Genes can be expressed at different rates: translation rates, rna and protein stability all can vary. Uracil instead of thymine: single stranded instead of double stranded. Can form base pairs with itself make various shapes. Can therefore have structural or catalytic activity. Transcription: dna rna: the rna strand is complementary to the template strand and identical (save the swapping for uracil) to the coding strand, done by rna polymerase. Can transcribe an entire gene at a time. Rna is made in the 5" 3" direction. Starts at a (cid:498)promoter(cid:499) sequence of dna. Located upstream of the gene, so 5" to the gene: located at -35, and -10; start site is +1, there is no 0. In bacteria a subunit of rna pol recognizes the promoter. Is asymmetrical: tells rna pol which way to go: the sigma factor.

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