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A periodontal pathogen, Porphyromonas gingivalis, produces two serine dipeptide lipid classes that we labeled lipid 654 and lipid 430, and both contain l-serine as the terminal amino acid. The lipid 654 and lipid 430 classes are each comprised of three species with differing fatty acid substitutions, but the most abundant species demonstrate unit masses of either 654 or 430, respectively. Recently...
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