Metabolic Similarities Between Algal Groups

Pathway Algal group Present Absent Enzymes verified Genetic information Source 

ENZ enzyme assays, SC structural composition, MM molecular methods, IL isotopic labeling, IF isotopic fractionation, INH inhibition studies, UNK unknown, LOX lipoxogenase, EPSP synthase 5-enolpyruvylshikimate-3-phosphate, SDH shikimate dehydrogenase, PAL phenylalanine ammonium lyase, PKS polyketide synthase, NRPS nonribosomal peptide synthase 1 Gerwick 1999 2 Liu et al. 1994 3 Boonprab et al. 2003 4 Cvejic and Rohmer 1999 5 Disch et al. 1998 6 Chikaraishi et al. 2006 7 Schwender et al. 2001 8 Schwender et al. 1997 9 Mayes et al. 1993 10 Shick et al. 1999 11 Richards et al. 2006 12 Bouarab et al. 2004 13 Pelletreau et al., unpublished data 14 Dittman and Weigand 2006 15 Rein and Barrone 1999 Empty columns imply no direct evidence of these enzymes from these systems 

The Polyketide Pathway One metabolic process that has received much attention from natural product chemists is the production of secondary metabolites via polyketide synthase (PKS) enzymes. Polyketide synthases condense small starting 

3 The Use of Molecular Tools to Characterize Patterns of Gene Response Involved in Macroalgal Defenses 

Agrawal AA, Fishbein M (2006) Plant defense syndromes. Ecology 87 S132-S149 Amsler CD, Fairhead VA (2006) Defensive and sensory chemical ecology of brown algae. Adv Bot Res 43 1-91 

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