2-Azaniumyl-4-(ethylcarbamoyl)butanoate: the zwitterionic form of the amino acid theanine
2011
Study of the Zwitterionic Form of Theanine
publication
Evidence: moderate
Author Information
Author(s): Kang Shou-Kai, Chen Yue-Hu, Qian Shao-Song, Hu Hao
Primary Institution: ShanDong University of Technology
Conclusion
The study successfully characterized the zwitterionic form of the amino acid theanine, revealing its structural properties and hydrogen bonding.
Supporting Evidence
- The ethylamino and 5-oxo groups in the zwitterion are positionally disordered.
- The terminal ethyl group shows considerable thermal motion.
- Molecules in the crystal are linked via hydrogen bonds, forming a two-dimensional arrangement.
Takeaway
Theanine, an amino acid found in tea, can form a special structure called a zwitterion, which helps it connect with other molecules in a unique way.
Methodology
The compound was synthesized and analyzed using X-ray diffraction.
Digital Object Identifier (DOI)
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