Why alanine is a zwitterion

Our density functional theory investigation reveals that a minimum of five water molecules are required to form and stabilize the zwitterion. Such files may be downloaded by article for research use if there is a public use license linked to the relevant article, that license may permit other uses.

B , , 20 , More by Reyhaneh Ghassemizadeh. More by Brendan Moore. More by Takamasa Momose. More by Michael Walter. Cite this: J. B , , 20 , — Article Views Altmetric -. View Author Information. Cite this: J. B , , 30 , — Article Views Altmetric -. Citations Supporting Information Available. Cited By. This article is cited by publications. The Journal of Physical Chemistry B , 1 , ACS Omega , 4 7 , The Journal of Physical Chemistry C , 45 , The Journal of Physical Chemistry A , 8 , Langmuir , 32 19 , The Journal of Physical Chemistry A , 21 , Vlachos , and Stavros Caratzoulas.

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Journal of Molecular Structure , , Journal of Physics: Conference Series , 1 , Shkir , M. Aslam Manthrammel , M. Sayed , T. Alshahrani , I. Yahia , V. Ganesh , H. Zahran , H. Algarni , S. Seed supported solution growth and characterization of L-alanine single crystals for optoelectronics.

Journal of Crystal Growth , , Hachtel , Jacob R. Jokisaari , Ondrej L. The basic amino acids which have positively charged side chains at neutral pH have relatively high examples. Amino acids undergo reactions characteristic of carboxylic acids and amines.

The reactivity of these functional groups is particularly important in linking amino acids together to form peptides and proteins, as you will see later in this chapter. Simple chemical tests that are used to detect amino acids take advantage of the reactivity of these functional groups. Ninhydrin is used to detect fingerprints because it reacts with amino acids from the proteins in skin cells transferred to the surface by the individual leaving the fingerprint.

Amino acids can act as both an acid and a base due to the presence of the amino and carboxyl functional groups.