Atomic force microscopic image data of botulinum neurotoxin complexes with different molecular sizes

Abstract

This data article provides atomic force microscopy (AFM) amplitude images of botulinum toxin complex (TC) molecules produced by Clostridium botulinum serotype D strain. C. botulinum produces different-sized TC molecules, such as a complex of botulinum neurotoxin and nontoxic nonhemagglutinin proteins (M-TC) and complex of M-TC and hemagglutinin subcomplex (L-TC). In this data article, the M and L-TC produced by serotype D strain 4947 were imaged by AFM. The M-TC molecule had a globular structure with a 30.5-nm diameter and a 2.1-nm height, while the L-TC molecule had a distinct structure in which several spheres were connected to a globular structure that was 40.7 nm in diameter and 3.5 nm in height. Keywords: Clostridium botulinum, Botulinum toxin complex, Atomic force microscopy, Protein structure