Structures and pKa values of ketoprofen, tris, L-lysine, and L-arginine. | Download Scientific Diagram
![Residue-Specific pKa Determination of Lysine and Arginine Side Chains by Indirect 15N and 13C NMR Spectroscopy: Application to apo Calmodulin | Journal of the American Chemical Society Residue-Specific pKa Determination of Lysine and Arginine Side Chains by Indirect 15N and 13C NMR Spectroscopy: Application to apo Calmodulin | Journal of the American Chemical Society](https://pubs.acs.org/cms/10.1021/ja0721824/asset/images/medium/ja0721824n00001.gif)
Residue-Specific pKa Determination of Lysine and Arginine Side Chains by Indirect 15N and 13C NMR Spectroscopy: Application to apo Calmodulin | Journal of the American Chemical Society
![All amino acids have two ionizable groups (an alpha-amino group with pKa = 9.3, and an alpha-carboxyl group with pKa = 2.2). Lysine also has an ionizable side-chain (R) with a pKa All amino acids have two ionizable groups (an alpha-amino group with pKa = 9.3, and an alpha-carboxyl group with pKa = 2.2). Lysine also has an ionizable side-chain (R) with a pKa](https://homework.study.com/cimages/multimages/16/screen_shot_2021-08-31_at_12.12.43_am2554089230179822626.png)
All amino acids have two ionizable groups (an alpha-amino group with pKa = 9.3, and an alpha-carboxyl group with pKa = 2.2). Lysine also has an ionizable side-chain (R) with a pKa
![SOLVED: The structure of lysine is shown in its fully protonated form: The pKa for the ionizable groups are 2.2 (a-carboxyl group), 9.0 (a-amino group), and 10.5 (amine in the side chain). SOLVED: The structure of lysine is shown in its fully protonated form: The pKa for the ionizable groups are 2.2 (a-carboxyl group), 9.0 (a-amino group), and 10.5 (amine in the side chain).](https://cdn.numerade.com/ask_images/0682b98fbb30452d91fd1b82942786cd.jpg)
SOLVED: The structure of lysine is shown in its fully protonated form: The pKa for the ionizable groups are 2.2 (a-carboxyl group), 9.0 (a-amino group), and 10.5 (amine in the side chain).
![Structure of common basic and acidic amino acids, with the pKa values... | Download Scientific Diagram Structure of common basic and acidic amino acids, with the pKa values... | Download Scientific Diagram](https://www.researchgate.net/publication/349449988/figure/fig3/AS:993103519440897@1613785738381/Structure-of-common-basic-and-acidic-amino-acids-with-the-pKa-values-of-side-chain.png)
Structure of common basic and acidic amino acids, with the pKa values... | Download Scientific Diagram
![What are the reasons these Amino Acid "side-chain R groups" do not have a pKa? No pKa means that hydrogens can neither leave or attach to these amino acids, right? : r/chemhelp What are the reasons these Amino Acid "side-chain R groups" do not have a pKa? No pKa means that hydrogens can neither leave or attach to these amino acids, right? : r/chemhelp](https://preview.redd.it/what-are-the-reasons-these-amino-acid-side-chain-r-groups-v0-u0f7eauj89mb1.png?auto=webp&s=f917820ad036f4ae3f70078b3c9df74e4a8151a0)