Comment on

• Structure and function of a squalene cyclase.

  Wendt KU, Poralla K, Schulz GE. Wendt KU, et al. Science. 1997 Sep 19;277(5333):1811-5. doi: 10.1126/science.277.5333.1811. Science. 1997. PMID: 9295270
• Structural basis for cyclic terpene biosynthesis by tobacco 5-epi-aristolochene synthase.

  Starks CM, Back K, Chappell J, Noel JP. Starks CM, et al. Science. 1997 Sep 19;277(5333):1815-20. doi: 10.1126/science.277.5333.1815. Science. 1997. PMID: 9295271
• Crystal structure of pentalenene synthase: mechanistic insights on terpenoid cyclization reactions in biology.

  Lesburg CA, Zhai G, Cane DE, Christianson DW. Lesburg CA, et al. Science. 1997 Sep 19;277(5333):1820-4. doi: 10.1126/science.277.5333.1820. Science. 1997. PMID: 9295272