Structural highlights 
| 3p4r is a 8 chain structure with sequence from Escherichia coli 042 and Escherichia coli O55:H7 str. CB9615. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. 
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| Method: | X-ray diffraction, Resolution 3.05Å | 
| Ligands: | , , , , | 
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT | 
  Function 
FRDB_ECOLI Two distinct, membrane-bound, FAD-containing enzymes are responsible for the catalysis of fumarate and succinate interconversion; the fumarate reductase is used in anaerobic growth, and the succinate dehydrogenase is used in aerobic growth.