| Summary: | 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
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