Pipecolic acid logically would be substituted for which natural amino acid in the synthesis of peptide analogs? 
Definitions:
Prefrontal Cortex
The part of the brain located at the front of the frontal lobes, involved in complex cognitive behavior, personality expression, decision making, and moderating social behavior.
Parietal Lobes
Regions of the cerebral cortex involved in processing sensory information from various parts of the body, understanding spatial orientation, and body awareness.
Brain Abnormalities
Refers to structural or functional deviations in the brain that can lead to various psychological or physical manifestations.
Executive Functioning
A set of mental skills that include working memory, flexible thinking, and self-control, crucial for learning, behavior, and overall daily life management.
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