How change dipole moment of this N terminal?

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SUMMARY

The discussion focuses on the impact of environmental changes, such as the addition of hydroxyl groups (OH), on the dipole moment of the amino acid N-terminal. It is established that alterations in hydrogen ion concentration affect the pKa, leading to the deprotonation of the N-terminal from NH3 to NH2. This transition results in a shift of the electron pair towards the nitrogen atom, which directly influences the dipole moment of the terminal. Understanding this relationship is crucial for comprehending molecular interactions in biochemical contexts.

PREREQUISITES
  • Understanding of amino acid structure and properties
  • Knowledge of pKa and its relevance in acid-base chemistry
  • Familiarity with dipole moments and molecular polarity
  • Basic principles of hydrogen bonding and electron pair shifts
NEXT STEPS
  • Research the effects of pH on amino acid ionization states
  • Study the relationship between molecular structure and dipole moments
  • Explore computational chemistry tools for modeling dipole moments
  • Learn about the role of functional groups in biochemical reactions
USEFUL FOR

Biochemists, molecular biologists, and students studying protein structure and function will benefit from this discussion, particularly those interested in the effects of environmental changes on molecular properties.

MrGenetic
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When the aminoacid environment were changed with adding OH or etc., Aminoacid N terminal were affected by H amount and in determined pKa, they loose hydrogen from N terminal. NH3 goes Nh2. My question is related to this. While this event occur, how change dipole moment of this terminal? Electron pair shift to top on N atom but H atom losted. I did not understand exactly how affect the dipole moment.
 
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