This domain is found at the C-terminus of the mycothiol maleylpyruvate isomerase enzyme (MDMPI). The structure of this protein has been solved [1]. This domain appears weakly similar to Pfam:PF08608.

1: Crystal structures and site-directed mutagenesis of a mycothiol-dependent enzyme reveal a novel folding and molecular basis for mycothiol-mediated maleylpyruvate isomerization. Wang R, Yin YJ, Wang F, Li M, Feng J, Zhang HM, Zhang JP, Liu SJ, Chang WR; J Biol Chem. 2007;282:16288-16294. PMID:17428791