Are natural amino acids L or D?
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47 Citations | In other words, some natural (L-configuration) α-amino acids and their unnatural (D-configuration) counterparts can be prepared very conveniently. |
19 Citations | This strongly suggests that significant amounts of d-amino acids are naturally present in usual proteins. |
97 Citations | Unnatural L-α-amino acids differing from the 20 naturally proteinogenic amino acids only in their side chain are ideal for this purpose, but their chemical synthesis is complex. |
| The ubiquity of L-amino acids in proteins has led to the hypothesis that D-amino acids are not substrates for the TM. | |
26 Citations | Indeed, we have evidence that the D-amino-acid residues are derived from L-amino-acids. |
76 Citations | Moreover, D-amino acids appear in soil due to abiotic or biotic racemization of L-amino acids. |
15 Citations | The common L amino acids may thus be complementary to their codons. |
| The results corroborated the absence or almost negligible presence of enantiomeric conversions of the L-amino acids into D-amino acids in the case of fertilizers obtained by enzymatic hydrolysis, as well as the high racemization rate for those obtained through a chemical hydrolysis. | |
| l-Amino acids are strongly disfavored in these conformations, but d-amino acids are not. | |
| Thus, the present method using L-AAO was versatile for production of a wide variety of D-amino acids. |
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