This entry represents a group of uncharacterised proteins that include methanobactin biosynthesis operon protein MbnP [1]. The respective proteins, MbnP and MbnH, are referred to in the TIGRFAM database as the metallo-mystery pair.

1: MbnH is a diheme MauG-like protein associated with microbial copper homeostasis. Kenney GE, Dassama LMK, Manesis AC, Ross MO, Chen S, Hoffman BM, Rosenzweig AC; J Biol Chem. 2019;294:16141-16151. PMID:31511324