1). The numbers of α-helices around the central five-stranded parallel β-sheet and in the C-terminal subdomain vary. Classical AAA+ proteins assemble into closed ring-shaped oligomers (generally hexamers) with a narrow central pore (Fig. 1B and C). Beside the conserved AAA domain, the ...
Numbers in geometry Already Pythagoreans considered the role of numbers in geometry. However, the discovery of incommensurable lengths, which contradicted their philosophical views, made them abandon (abstract) numbers in favour of (concrete) geometric quantities, such as length and area of figures...
1). The numbers of α-helices around the central five-stranded parallel β-sheet and in the C-terminal subdomain vary. Classical AAA+ proteins assemble into closed ring-shaped oligomers (generally hexamers) with a narrow central pore (Fig. 1B and C). Beside the conserved AAA domain, the ...