Selenium-containing Amino-acids

There is also a significant occurrence of nonprotein D-amino acids in nature.These amino acids have attractive structural variations and remarkable biological properties. However, this chapter will not include details on nonprotein D-amino acids. Selenium-containing amino acids, such as selenocysteine and selenomethionine, are also considered as unusual amino acids. Recently, much interest in selenium-containing amino acids has emerged. More information about selenium-containing amino acids is available in Chapter 5.05. 

Bottino, N.R., Banks, C.H., Irgolic, K.J., Micks, P., Wheeler, A.E., and Zingaro, R.A. 1984. Selenium containing amino acids and proteins in marine algae. Phytochemistry 23, 2445-2452. 

The simultaneous presence of a chiral selector and a charged non-chiral IPR was studied successfully [129]. The presence of a non-chiral IPR dramatically improved the separation of oppositely charged compounds on a chiral column, probably because the IPR increased retention and hence interactions with the chiral packing, as in the speciation of selenium-containing amino acids, on a crown ether column... 

Hydroxy-L-tryptophan 3,4-Dihydroxy-L-phenylalanine (L-dopa) Selenium-Containing Amino Acids Nonprotein Amino Acids in Seeds of the Cucurbitaceae Compounds Involved in Iron Metabolism in Plants Ethylene and Its Precursors... 

Table 4. y-Glutamyl Derivatives of Non-Protein, Sulphur- or Selenium-Containing Amino Acids, Identified in Plants... 

This compound is the principal toxic component of seeds of Astragalus bisulcatus, in which it occurs together with the free selenium-containing amino acid (237). The toxicity of selenium-containing amino acids towards animals has been reviewed (208). 

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