Peptides from chiral, Cα-methylated α-amino acids (see scheme) found in l enantiomeric excess in meteorites show diastereoselectivity when reacting with racemic proteinogenic amino acids. Accordingly, the prebiotic soup of proteinogenic amino acids may have evolved into a chirally unbalanced system, eventually seeding the homochirality of life.
Meteoritic C-alpha-Methylated alpha-amino acids and the homochirality of life: Searching for a link
MORETTO, ALESSANDRO;FORMAGGIO, FERNANDO;TONIOLO, CLAUDIO
2004
Abstract
Peptides from chiral, Cα-methylated α-amino acids (see scheme) found in l enantiomeric excess in meteorites show diastereoselectivity when reacting with racemic proteinogenic amino acids. Accordingly, the prebiotic soup of proteinogenic amino acids may have evolved into a chirally unbalanced system, eventually seeding the homochirality of life.
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