Flavodoxin fold

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Ribbon diagram of CheY (a regulator of the chemotactic response in bacteria, PDB accession code 3CHY), which adopts the flavodoxin fold.  Ribbon is colored from blue (N-terminus) to red (C-terminus).
Ribbon diagram of CheY (a regulator of the chemotactic response in bacteria, PDB accession code 3CHY), which adopts the flavodoxin fold. Ribbon is colored from blue (N-terminus) to red (C-terminus).

The flavodoxin fold is a common α/β protein fold, second only to the TIM barrel fold. It has three layers, with two α-helical layers sandwiching a 5-stranded parallel β-sheet. The order of strands within the sheet is 21345.


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Protein tertiary structure
General: Structural domain | Protein folding
All-α folds: Helix bundle | Globin fold | Homeodomain fold | Alpha solenoid
All-β folds: Immunoglobulin fold | Beta barrel | Beta-propeller domain
α/β folds: TIM barrel | Leucine-rich repeat | Flavodoxin fold | Thioredoxin fold | Trefoil knot fold
α+β folds: Ferredoxin fold | Ribonuclease A | SH2-like fold
Irregular folds: Conotoxin
←Secondary structure Structure determination methods Quaternary structure→