Biochemistry I   Spring & Fall Terms

Super Secondary Structure Motifs: b-Propeller Proteins

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  Load these "Propellers"
  Four Blades
  Five Blades
  Six Blades
  Seven Blades
  Eight Blades
  Five Blades (bab)

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b-Propeller Structures Gallery
The b-propeller class of proteins are characterized by the similar orientation of the b-sheets in the cores of their structures. They differ in the number of "blades" found in the propeller motif and in the extent to which a-helices and other structures are present. The similarities and differences can be seen by viewing these six examples (listed above by # blades):
# Blades PDB ID Protein
Four 1HXN Rabbit Serum Haemopexin: NaCl
Five 1TL2 Tachylectin-2 From Japanese Horseshoe Crab: NAG
Six 1CRU Quinoprotein Glucose Dehydrogenase: Ca PQQ HDN
Seven 1GOT Bovine Transducin Subunit
Eight 1AOQ Cytochrome Cd1 Nitrite Reductase: HEM DHE
Five 1G61 Ribosome Anti-Association Factor If6
The above listing also shows that these proteins perform a wide variety of functions in diverse organisms.
Viewing Tips:
1. Color the displays by Group to see the course of the polypeptide chain from N- to C-terminus.
2. Several of these proteins have important ligands and/or prosthetic groups; you can visualize them by selecting Ligand (under Hetero), followed by Spacefill, and then CPK.

Back to the Protein Structure List.

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8.21.04