https://www.ncbi.nlm.nih.gov/Structure/pdb/1B4N
1B4N: FORMALDEHYDE FERREDOXIN OXIDOREDUCTASE FROM PYROCOCCUS FURIOSUS, COMPLEXED WITH GLUTARATE
FORMALDEHYDE FERREDOXIN OXIDOREDUCTASECALCIUM IONGLUTARIC ACIDIRON/SULFUR CLUSTERTUNGSTOPTERIN COFACTOR
formaldehyde