YbtT is a low-specificity type II thioesterase that maintains production of the metallophore yersiniabactin in pathogenic enterobacteria.
Ohlemacher, S.I., Xu, Y., Kober, D.L., Malik, M., Nix, J.C., Brett, T.J., Henderson, J.P.(2018) J Biol Chem 293: 19572-19585
- PubMed: 30355735 
- DOI: 10.1074/jbc.RA118.005752
- Primary Citation of Related Structures:  
6BA8, 6BA9 - PubMed Abstract: 
Clinical isolates of Yersinia , Klebsiella , and Escherichia coli frequently secrete the small molecule metallophore yersiniabactin (Ybt), which passivates and scavenges transition metals during human infections. YbtT is encoded within the Ybt biosynthetic operon and is critical for full Ybt production in bacteria ...