Crystal Structure of B. juncea MAMS in Complex with Acetyl-CoA and 4-Methyl-Thio-2-Oxobutanoic Acid. Crystal Structure of B. juncea MAMS in Complex with Acetyl-CoA and 4-Methyl-Thio-2-Oxobutanoic Acid. The dimer structure is shown as a ribbon diagram. In one monomer, the α-helices (rose) and β-strands (blue) of the structure are colored and labeled. The N-terminal α/β-barrel and the C-terminal extension domains are also indicated. Bound ligands are shown as space-filling models. (Reprinted fromKumar et al., 2019, Figure 4A) Jennifer Lockhart Plant Cell 2019;31:1429 ©2019 by American Society of Plant Biologists