Mechanisms of Modular Polyketide Synthase Beta-Carbon Processing Enzymes
Adrian Keatinge-Clay, Jianting Zheng, Shawn Piasecki, Darren Gay and Constance Bailey, Chemistry and Biochemistry, The University of Texas at Austin, Austin, TX

Structure and Chemistry of Nonribosomal Peptide Natural Product Biosynthesis
Steven D. Bruner, Ye Liu, Heather Condruso, Paul Widboom and Elisha N. Fielding, Chemistry, University of Florida, Gainesville, FL

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Structural and Functional Studies of Novel Thiazole/Oxazole-Modified Microcins
Douglas A. Mitchell, Kyle Dunbar, Joel Melby and Jaeheon Lee, Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL

The unusual enzyme chemistry in diphthamide biosynthesis
Hening Lin¹, Yang Zhang¹, Xuling Zhu¹, Andrew T. Torelli¹, Michael Lee², Boris Dzikovski¹, Rachel M. Koralewski¹, Eileen Wang¹, Jack Freed¹, Steven E. Ealick¹ and Carsten Krebs², (1)Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, (2)Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA

Structure and Mechanism of Antibiotic Tailoring Enzymes
Satish Nair, Zhi Liu, Vinayak Agarwal and Yue Hao, Biophysics and Computational Biology, University of Illinois at Urbana Champaign, Urbana, IL