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).

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 2-1-3-4-5.

This motif is present for example in lactate dehydrogenase (PDB: 1A5Z​) or phosphoglycerate kinase (PDB: 1FW8​).[1]

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References

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  1. ^ Kalinowska B, Banach M, Wiśniowski Z, Konieczny L, Roterman I (July 2017). "Is the hydrophobic core a universal structural element in proteins?". Journal of Molecular Modeling. 23 (7): 205. doi:10.1007/s00894-017-3367-z. PMC 5487895. PMID 28623601.
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