5VF1

X-ray Crystallographic Structure of a Giant Double-Walled Peptide Nanotube Formed by a Macrocyclic Beta-Sheet Containing ABeta16-22

Summary for 5VF1

• Entry DOI: 10.2210/pdb5vf1/pdb
• Descriptor: ORN-LYS-LEU-VAL-PHI-PHE-ALA-GLU-ORN-GLU-ALA-PHE-MEA-VAL-LEU-LYS (2 entities in total)
• Functional Keywords: amyloid-beta, macrocyclic peptide, nanotube, de novo peptide design, de novo protein
• Biological source: Homo sapiens (Human)
• Total number of polymer chains: 6
• Total formula weight: 12349.48

Authors

Chen, K.H.,Corro, K.A.,Le, S.P.,Nowick, J.S. (deposition date: 2017-04-06, release date: 2017-06-21, Last modification date: 2019-11-27)

Primary citation

Chen, K.H.,Corro, K.A.,Le, S.P.,Nowick, J.S.
X-ray Crystallographic Structure of a Giant Double-Walled Peptide Nanotube Formed by a Macrocyclic beta-Sheet Containing A beta 16-22.
J. Am. Chem. Soc., 139:8102-8105, 2017

PubMed Abstract: This paper describes the supramolecular assembly of a macrocyclic β-sheet containing residues 16-22 of the β-amyloid peptide, Aβ. X-ray crystallography reveals that the macrocyclic β-sheet assembles to form double-walled nanotubes, with an inner diameter of 7 nm and outer diameter of 11 nm. The inner wall is composed of an extended network of hydrogen-bonded dimers. The outer wall is composed of a separate extended network of β-barrel-like tetramers. These large peptide nanotubes pack into a hexagonal lattice that resembles a honeycomb. The complexity and size of the peptide nanotubes rivals some of the largest tubular biomolecular assemblies, such as GroEL and microtubules. These observations demonstrate that small amyloidogenic sequences can be used to build large nanostructures.

PubMed: 28598147
DOI: 10.1021/jacs.7b03890

Experimental method

X-RAY DIFFRACTION (2.1 Å)