Stereochemistry of amino acids in surface samples of a marine sediment
In two surface samples of marine sediment, the percentages of d -alanine and d -aspartic acid are significantly higher than the other d -amino acids and are similar to the range found in soils. The percentage of d -glutamic acid is also higher than the other amino acids but less than d -alanine and d -aspartic acid. These d -amino acids may come mainly from bacteria.
Geochimica et Cosmochimica Acta↗