Zwitterionic form of an L-alpha-amino acid having an anionic carboxy group and a protonated amino group.
ChEBI ID: 59869
| Member | Definition | Role |
|---|---|---|
| 3-chloro-L-tyrosine | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of 3-chloro-L-tyrosine; major species at pH 7.3. | 3-chloro-L-tyrosine zwitterion; 3-chloro-L-tyrosine |
| 3-tyrosine | An L-alpha-amino acid zwitterion that is L-m-tyrosine in which a proton has been transferred from the carboxy group to the amino group. | L-m-tyrosine zwitterion; L-m-tyrosine |
| 5-methoxytryptophan | 5-methoxy-L-tryptophan zwitterion; 5-methoxytryptophan | |
| 6-bromotryptophan | The L-alpha-amino acid zwitterion that results from the transfer of a proton from the carboxylic acid group to the alpha-amino group of L-6'-bromotryptophan. The major species at pH 7.3. | L-6'-bromotryptophan zwitterion; L-6'-bromotryptophan |
| 6-chlorotryptophan | An L-alpha-amino acid zwitterion resulting from the transfer of a proton from the carboxy group to the alpha-amino group of 6-chloro-L-tryptophan; major species at pH 7.3. | 6-chloro-L-tryptophan zwitterion; 6-chloro-L-tryptophan |
| anticapsin | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of anticapsin; major species at pH 7.3. | anticapsin zwitterion; anticapsin |
| biocytin | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of biocytin; major species at pH 7.3. | biocytin zwitterion; biocytin |
| epsilon-(gamma-glutamyl)-lysine | An L-alpha-amino acid zwitterion that is the dizwitterionic form of epsilon-(gamma-glutamyl)lysine obtained by migration of protons from both carboxy groups to the amino groups; major species at pH 7.3. | epsilon-(gamma-glutamyl)lysine dizwitterion; epsilon-(gamma-glutamyl)lysine |
| hydroxyproline | An L-alpha-amino acid zwitterion arising from transfer of a proton from the carboxy to the amino group of trans-4-hydroxy-L-proline; major species at pH 7.3. | trans-4-hydroxy-L-proline zwitterion; trans-4-hydroxy-L-proline |
| isoleucine | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-isoleucine; major species at pH 7.3. | L-isoleucine zwitterion; L-isoleucine |
| lysine | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-lysine; major species at pH 7.3. | L-Lysine zwitterion; L-lysine |
| methionine sulfone | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of methionine sulfone; major miscrospecies at pH 7.3. | L-methionine sulfone; methionine sulfone zwitterion |
| methionine sulfoximine | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-methionine sulfoximine; major miscrospecies at pH 7.3. | L-methionine sulfoximine zwitterion; L-methionine sulfoximine |
| methylmercury cysteine | methylmercury L-cysteine zwitterion | |
| n-methylproline | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of N-methylproline; major species at pH 7.3. | N-methylproline zwitterion; N-methylproline |
| norleucine | An L-alpha-amino acid zwitterion obtained from L-2-aminohexanoic acid by transfer of a proton from the carboxy group to the amino group. It is the major species at pH 7.3. | L-2-aminohexanoic acid zwitterion; L-norleucine |
| norvaline | An L-alpha-amino acid zwitterion obtained from L-2-aminopentanoic acid by transfer of a proton from the carboxy group to the amino group. It is the major species at pH 7.3. | L-2-aminopentanoic acid zwitterion; L-2-aminopentanoic acid |
| ovothiol a | An L-alpha-amino acid zwitterion formed from ovothiol A by transfer of a proton from the carboxy to the amino group; major species at pH 7.3. | ovothiol A zwitterion; ovothiol A |
| ovothiol c | An L-alpha-amino acid zwitterion formed from ovothiol C by transfer of a proton from the carboxy to the amino group; major species at pH 7.3. | ovothiol C zwitterion; ovothiol C |
| s-allylcysteine | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of S-allylcysteine. Major species at pH 7.3. | S-allylcysteine zwitterion; S-allylcysteine |
| tryptophan | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-tryptophan; major species at pH 7.3. | L-tryptophan zwitterion; L-tryptophan |
| valine | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-valine; major species at pH 7.3. | L-valine zwitterion; L-valine |
| vinylglycine | An L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-vinylglycine; major species at pH 7.3. | L-vinylglycine zwitterion; L-vinylglycine |
| Timeframe | Studies, Drugs in This Class (%) | All Drugs % |
|---|---|---|
| pre-1990 | 35,193 (37.14) | 18.7374 |
| 1990's | 13,074 (13.80) | 18.2507 |
| 2000's | 19,769 (20.86) | 29.6817 |
| 2010's | 20,116 (21.23) | 24.3611 |
| 2020's | 6,604 (6.97) | 2.80 |
| Publication Type | Studies, Drugs in This Class (%) | All Drugs (%) |
|---|---|---|
| Trials | 3,149 (3.00%) | 5.53% |
| Reviews | 4,481 (4.27%) | 6.00% |
| Case Studies | 2,107 (2.01%) | 4.05% |
| Observational | 151 (0.14%) | 0.25% |
| Other | 95,143 (90.59%) | 84.16% |