pK - C H 3 N + H COO- R C H 2 N Form IV = lose H from amine...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
C COO H H H H H 3 N + COO - H H COO - H 2 N H C C H 3 N + Form III = lose H from amine group Form I = fully protonated Form II = lose H from carboxyl group No net charge at pI 0.5 1 1.5 2 OH - Equivalents pH pK 1 pK 2 2 4 6 8 10 12 Glycine Alanine Valine Leucine Isoleucine Phenylalanine Tryptophan Methionine Proline Serine Threonine Asparagine Glutamine No H lost (fully protonated) H lost from carboxyl & amino group (fully deprotonated) [I] = [II] [II] = [III] pI H lost from carboxyl group
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
C COO H H R H H H 3 N + COO - R H H COO - R C
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: C H 3 N + H COO- R C H 2 N Form IV = lose H from amine Form III = lose H from R group H 3 N + Form II = lose H from carboxyl group Form I = fully protonated No H lost (fully protonated) 0.5 1 1.5 2 OH-Equivalents pH pK 1 pK 2 pK R 2 4 6 8 10 12 Tyrosine Cysteine Aspartate Glutamate Histidine Lysine Arginine [I] = [II] [II] = [III] [III] = [IV] H lost from R group H lost from carboxyl group H lost from carboxyl, amino, and R group (fully deprotonated)...
View Full Document

Page1 / 2

pK - C H 3 N + H COO- R C H 2 N Form IV = lose H from amine...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online