Protein
Dihydroorotate dehydrogenase B (NAD(+)), catalytic subunit
Organism
Desulfotomaculum reducens (strain MI-1)
Function
Together with PyrK, also forms a metal reductase complex able to reduce Fe(III)-chelates to Fe(II)-chelates, as well as soluble Cr(VI) and U(VI), using NADH as electron donor. To a lesser extent, can also use NADPH as an electron donor. Is unable to reduce riboflavin and FMN with NADH as electron donor. May have an in vivo role in metal reduction in D.reducens, which is an organism capable of reducing contaminant heavy metals and radionuclides.
Similarity
Belongs to the dihydroorotate dehydrogenase family. Type 1 subfamily.
Sequence
MKLNLAVKIGQLDMINPVTTASGTFGYGQEYSPYVDLNQLGAIVVKGTTLEPREGNPTPRLVETPSGILNSIGLQNSGVDYLLEHYVPFFKKLQTNVIVNISGNTAEEYGQLAARLDEADGIAALEVNISCPNVKKGGMAFGGDFRTAAEVTKVVKNSTALPVIVKLSPNVTDIAEIARAVEGAGADGLSVINTLLGMAIDVRKRKPVLGNTMGGLSGPAVKPVALRAVWQVYKAVHIPIIGMGGIMNATDALEFILAGAQAVSVGTANFVNPYATKEIIQGMEKYLMENGIGDINELVGAAHL