Molecular Biology Molecular Biology David Clark Cells DNA

Molecular Biology • Molecular Biology David Clark • 分子生物學 導讀本 譯者 王祖興 高立圖書公司

Cells, DNA and protein

eucaryotes v. s procaryotes A schematic diagram of an animal cell accompanied by electron micrographs of its organelles

Figure 4 A drawing of a plant cell accompanied by electron micrographs of its organelles.

Scale drawings of some prokaryotic cells

A schematic diagram of a prokaryotic cell

The construction of cells • DNA or RNA (d. NTP or NTP) • Protein (amino acid) • Carbohydrates (單醣 雙醣 多醣) • Lipid etc. (生物膜)

The construction of cells • DNA or RNA • Protein • Carbohydrates • Lipid etc.

Major biological functions of protein • • • enzyme Catalytic proteins: A+B Structural proteins Transport proteins Regulatory proteins Protective proteins : antibodies C

central dogma

Figure 3. 11

RNA polymerase σ α 2ββ’ Core enzyme DNA σ promoter α 2ββ’

translation RBS: ribosome binding site Ribosome(r RNA + r protein)

AUGCUUGAAUAA

模板 單體 產物 酵素 備註 DNA replication DNA d. NTP DNA polymerase transcription DNA NTP RNA polymerase promoter translation m. RNA 胺基酸 蛋白質 ribosome Ribosome binding site (RBS) t. RNA (ori)

Polycistronic m. RNA