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Terpenes are the building blocks for a number of molecules Phytol tail on chlorophyll Ubiquinone tail Gibberellins Cytokinin Steroids Many secondary products
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Terpenes are the building blocks for a number of molecules Phytol tail on chlorophyll Ubiquinone tail Gibberellins Cytokinin Steroids Many secondary products
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Fig. 24.01
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Fig. 24.02 Terpenes are made from C5 units
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Fig. 24.03 Thyme leaf surfaceSpearmint trichome Secretory cavity lemon Resin duct, Jeffrey Pine
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Nuts and Bolts The terpene lecture is on the web Papers are due Thursday, May 9 Final exam Saturday, May 18 - 105 Tureaud
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Terpenes are the building blocks for a number of molecules Phytol tail on chlorophyll Ubiquinone tail Gibberellins Cytokinin Steroids Many secondary products
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In plants, hemes are built from glutamate in the chloroplast In animals and fungi, hemes are made from succinyl CoA and glycine in the mitochondria The chlorophyll phytol tail is a terpene
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Fig. 12.04 phytol
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Succinyl CoA + glycine Heme Biosynthesis (animals)
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Fig. 12.05
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Glutamic acid to ALA
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Two ALA molecules are condensed to make porphobilinogen
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Fig. 12.05 4 porphobilinogen molecules make up protoporphyrinogen IX
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Fig. 12.05 Chlorophyll biosynthesis begins with chelation of Mg+2
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Fig. 12.05
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Chlorophyll biosynthetic intermediates Protoporphyrinogen – four rings Protochlorophyllide – Ring V is made Chlorophyllide – Ring IV is reduced Chlorophyll – phytol is atttached
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Terpenes are the building blocks for a number of molecules Phytol tail on chlorophyll Ubiquinone tail Gibberellins Cytokinin Steroids Many secondary products
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The isoprene unit is the basic building block of terpenes The isoprene unit has five carbons Three Acetyl CoA molecules make up mevalonic acid (MVA) which has (6 carbons) MVA is oxidized, CO 2 is lost and isopentenylpyrophosphate (IPP) is made This occurs in the ER There is another pathway in the plastid (don’t worry about it)
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Fig. 24.04 ER pathway Highly regulated
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Fig. 24.04 ER pathway (continued)
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Fig. 24.05
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Fig. 14.25 Plastid pathway (top)
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Fig. 24.07
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Yes No
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Fig. 12.07
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Fig. 12.08
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C20 C40 head to head dimerization
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Fig. 17.24
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Fig. 17.27
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See also Figure 17.28
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Fig. 17.61
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Fig. 17.62
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Fig. 17.05
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Fig. 17.08
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Fig. 17.09
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Fig. 17.12
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Fig. 17.32
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Fig. 17.35
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Monoterpenes
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Sesquiterpenes
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Diterpenes
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