flavin reductase ThdF in complex with two bound FADs in space group P212121

2-Gaussian fit: Grosse-Kunstleve RW, Sauter NK, Adams PD: Newsletter of the IUCr Commission on Crystallographic Computing 2004, 3, 22-31.

The NADH-dependent flavin reductase ThdF follows an ordered sequential mechanism though crystal structures reveal two FAD molecules in the active site.

PETRA III, EMBL c/o DESY BEAMLINE P14 (MX2)

GAMAGAAGGVTTEQQHYRDLMSAFPTGIAVVTSLDAQGVPRGMTCSSVTSATLSPPTLLVCLRNGSATLDAVSATRGFAV
NLLHDGGRHAAEVFSGPDPNRFSRVQWKQCRSGLPWLSKDAFAVAECRVSGTQEVGDHTVVFGEVARIAQTDGTPLLYGL
RSFAAWPLPSESARQGSEAAPRGSEPAYGARSSRG

D12 JCSG++ (Jena Bioscience); 40 mM KH2PO4, 20 % (v/v) glycerol, 16 % (w/v) PEG 8000; 18 mg/mL ThdF (50 mM HEPES pH 7.0, 20 mM NaCl, 1 mM DTT), 1:1800 (mass ratio) elastase added; 600 nL protein + 300 nL reservoir

structure in different crystal form with two FADs

structure in same crystal form with NAD and FAD

flavin reductase, FAD, oxidoreductase, NADH:FAD oxdioreductase, FLAVOPROTEIN

GAAGGVTTEQQHYRDLMSAFPTGIAVVTSLDAQGVPRGMTCSSVTSATLSPPTLLVCLRNGSATLDAVSATRGFAVNLLH
DGGRHAAEVFSGPDPNRFSRVQWKQCRSGLPWLSKDAFAVAECRVSGTQEVGDHTVVFGEVARIAQTDGTPLLYGLRSFA
AWPLPSESARQGSEAAPRGSEPAYGARSSRG