In diseases such as Creutzfeldt-Jakob disease (CJD), a normal prion protein becomes infectious and transforms other proteins. The "normal" protein and the "infectious" " prion protein are identical in primary structure; that is they are both composed of the same amino acids in the same sequence. What could identify the abnormal protein? 1. The difference could be that the "infectious" protein has undergone a repeated packaging by the Golgi apparatus. 2. The difference could be that the protein has become infected by a bacterium 3. The difference could be that the protein has mutated 4. The difference could be that the "normal" protein's shape; its secondary, tertiary, or possibly quaternary structure has changed.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In diseases such as Creutzfeldt-Jakob disease (CJD), a normal prion protein becomes infectious and transforms other proteins. The "normal" protein and the "infectious" " prion protein are identical in primary structure; that is they are both composed of the same amino acids in the same sequence. What could identify the abnormal protein? 1. The difference could be that the "infectious" protein has undergone a repeated packaging by the Golgi apparatus. 2. The difference could be that the protein has become infected by a bacterium 3. The difference could be that the protein has mutated 4. The difference could be that the "normal" protein's shape; its secondary, tertiary, or possibly quaternary structure has changed.
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