MBB 231 Lecture Notes - Lecture 4: Carotenoid, Terpenoid, Alkanolamine

• School: Simon Fraser University
• Department: Molec Biol & Biochem
• Course: MBB 231
• Professor: Stephanie Vlachos

Document Summary

Rna contains the 5-carbon sugar ribose, and dna contains the related sugar, deoxyribose. Dna serves as the repository of genetic information, whereas rna is the intermediary between dna and a polypeptide. Complementary base pairing: complementary base pairing allows a to form two hydrogen bonds with t and g to form three hydrogen bonds with c, this base pairing is a fundamental property of nucleic acids. Nucleotides have other functions: they carry chemical energy in their easily hydrolyzed phosphoanhydride bonds, they combine with other groups to form coenzymes, they are used as signaling molecules in the cell. Base pairing and rna: rna is normally single stranded, rna structure also depends on base pairing, however, the pairing usually between bases in different areas of the same molecule and is less extensive than that of dna. Other types of rna: several new types of rna have been recently discovered. Most eukaryotic cells contain a variety of small rnas that function as regulatory molecules.