The Earlier the Better: Structural Analysis and Separation of Lanthanides with Pyrroloquinoline Quinone.

ABSTRACT: Lanthanides (Ln) are critical raw materials, however, their mining and purification have a considerable negative environmental impact and sustainable recycling and separation strategies for these elements are needed. In this study, the precipitation and solubility behavior of Ln complexes with pyrroloquinoline quinone (PQQ), the cofactor of recently discovered lanthanide (Ln) dependent methanol dehydrogenase (MDH) enzymes, is presented. In this context, the molecular structure of a biorelevant europium PQQ complex was for the first time elucidated outside a protein environment. The complex crystallizes as an inversion symmetric dimer, Eu₂ PQQ₂ , with binding of Eu in the biologically relevant pocket of PQQ. LnPQQ and Ln1Ln2PQQ complexes were characterized by using ind

SUBMITTER: Lumpe H 

PROVIDER: S-EPMC7496819 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature