New design platform for malonyl-CoA-acyl carrier protein transacylaseHong, S.K., Kim, K.H., Park, J.K., Jeong, K.-W., Kim, Y.M., Kim, E.E.
(2010) FEBS Lett 584: 1240-1244
- PubMed: 20176020
- DOI: https://doi.org/10.1016/j.febslet.2010.02.038
- Primary Citation of Related Structures:
- PubMed Abstract:
Malonyl-CoA-acyl carrier protein transacylase (MCAT) transfers the malonyl group from malonyl-CoA to holo-acyl carrier protein (ACP), and since malonyl-ACP is a key building block for fatty-acid biosynthesis it is considered as a promising antibacterial target. The crystal structures of MCAT from Staphylococcus aureus and Streptococcus pneumoniae have been determined at 1.46 and 2.1A resolution, respectively. In the SaMCAT structure, the N-terminal expression peptide of a neighboring molecule running in the opposite direction of malonyl-CoA makes extensive interactions with the highly conserved "Gly-Gln-Gly-Ser-Gln" stretch, suggesting a new design platform. Mutagenesis results suggest that Ser91 and His199 are the catalytic dyad.
Korea Institute of Science and Technology, Life Sciences Division, Seoul, Republic of Korea.