[생화학] DNA와RNA의 상호작용

목차

Interaction of DNA and Proteins that Recognize a Specific Base Sequence

1.DNA의 역사
2.Protein 과 상호작용
3.Transcription
4.Splicing
5.Prokaryote의 전사종결
6. Positively charged AAs from ionic bonds with the phosphate groups, which are negatively charged

본문내용

- Organized assemblies consisting mainly of proteins and lipid
- Share common features, but small differences -> varied functions of different membranes
- A basic function; separation the contents of a cell from environment
-> But, should be permeable to allow the uptaking the nutrients from surroundings
-> Permeability; should be selective, concentrations of compounds within a cell can be controlled
-> Selective permeability; attains by means of restricting free passages of most intra- and extra cellular substances
-> allow transporting specific substances by molecular pumps, channels, and gates
-> Signal function (e.g., receptions from signal molecules)
-> Most notable feature of membranes: membrane bilayer
-> consequence of the chemical nature of lipids
-> Phospholipids ; consisting of a polar phosphate containing group and two long nonpolar hydrocarbon chains
-> Essential feature of the phospholipids
polar head
nonpolar tail ; amphipathic
- When exposed to water, amphipathic molecules immediately aggregates

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