misfolded protein

https://doi.org/10.1351/goldbook.11878
Protein that has the same amino acid sequence as the normal, functional protein but exhibits a deviant tertiary structure and lacks normal function.
Note: Common neurodegenerative diseases (e.g., Alzheimer disease) are associated with the formation, aggregation and deposition of misfolded proteins in neurons.
See also: inclusion body
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 882 [Terms] [Paper]