Phototrophs Purple and green bacteria Cyanobacteria,algae,green plants Anoxygenic Oxygenic Reducing power Carbon Energy Reducing power Carbon Energy H2S~-electrons C02 ADP H20、 C02 electrons ADP electrons Light ←Light S042 (CH2O)n ATP 302 (CH2O)n ATP a ) 2012 Pearson Education,Inc. oxygenic phototrophs产氧光合生物,light drives the oxidation of water to oxygen. anoxygenic phototrophs不产氧光合生物:obtain their energy from light(hv) They do not produce O2
oxygenic phototrophs产氧光合生物 , light drives the oxidation of water to oxygen. anoxygenic phototrophs不产氧光合生物: obtain their energy from light (hv). They do not produce O2
13.2 Chlorophylls and Bacteriochlorophylls叶绿素与菌绿素 Cyanobacteria produce chlorophyll a Prochlorophytes produce chlorophyll a and b Anoxygenic phototrophs produce bacteriochlorophylls Chlorophyll pigments are located within special membranes ·In eukaryotes,called thylakoids类囊体 In prokaryotes,pigments are integrated into cytoplasmic membrane Chen Feng,Microbiology,SJTU
Chen Feng, Microbiology, SJTU 13.2 Chlorophylls and Bacteriochlorophylls叶绿素与菌绿素 Cyanobacteria produce chlorophyll a Prochlorophytes produce chlorophyll a and b Anoxygenic phototrophs produce bacteriochlorophylls Chlorophyll pigments are located within special membranes • In eukaryotes, called thylakoids 类囊体 • In prokaryotes, pigments are integrated into cytoplasmic membrane
Photosynthetic pigments and their location within the cell光合色素及其细胞内定位 Chlorophyl-Magnesium containing porphyrin叶绿素:含 镁的卟啉 ·Cyanobacteria-chlorophyll a叶绿素a ·Purple bacteria-bacteriochlorophyll a菌绿素a Chen Feng,Microbiology,SJTU
Chen Feng, Microbiology, SJTU Photosynthetic pigments and their location within the cell光合色素及其细胞内定位 Chlorophyll-Magnesium containing porphyrin叶绿素:含 镁的卟啉 • Cyanobacteria-chlorophyll a叶绿素a • Purple bacteria-bacteriochlorophyll a 菌绿素a
CH2 CH3 CH H CH3 O=C H HgC H H HgC C2H5 HgC C2H5 H H H Mg H HgC H CH3 Hg H CH3 H2C H H2C CH2 H COoCHs CH2 H1 0 Cyclopentanone COOCH3 COOC20H39 COOC20H39 Cyclopentanone ring ring Phytol 环戊酮 Phytol 环戊酮 Chlorophyll a Bacteriochlorophyll a a 2012 Pearson Education.Ine. Differences between chlorophyll a and bacteriochlorophyll a
环戊酮 环戊酮 Differences between chlorophyll a and bacteriochlorophyll a
CH2 CH H CH3 0.9 0.8 Chlorophyll a HgC C2H5 peaks 0.7 Carotenoid H 0 peak 0 CH3 0. H2C H 0 CH2 H COOCH3 0.2 Cyclopentanone COOC20H39 ring 0.1 Phytol 0 340400 500 600 700 800 900 Chlorophyll a Wavelength(nm) Structure and spectra of chlorophyll a.it shows strong absorption of red light(680nm)and blue light(430nm)
Structure and spectra of chlorophyll a. it shows strong absorption of red light (680nm) and blue light (430nm)