Proteomics

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Human enamel peptides LC-MS/MS.

ABSTRACT: Recently, enamel peptides revealed their critical role in sex classification of old skeletal remains. In particular, the presence of protein AMELY (amelogenin isoform Y) within the enamel dental tissue is restricted to the male sex only, while AMELX (isoform X) can be found in both sexes. AMELY can be easily detected through peptide SM(ox)IRPPY by means of LC-MS/MS and retrieved from ion chromatograms (exact mass [M+2H]+2 440.2233 m/z). In this paper, we exploited the dimorphic features of the amelogenin protein to unravel the sex of the so-called ‘Lovers of Modena’, two Late Antique individuals whose skeletons were intentionally buried hand-in-hand.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Tooth Enamel

SUBMITTER: Federico Lugli  

LAB HEAD: Giulia Di Rocco

PROVIDER: PXD012587 | Pride | 2019-11-05

REPOSITORIES: Pride

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Recent work has disclosed the critical role played by enamel peptides in sex classification of old skeletal remains. In particular, protein AMELY (amelogenin isoform Y) is present in the enamel dental tissue of male individuals only, while AMELX (isoform X) can be found in both sexes. AMELY can be easily detected by LC-MS/MS in the ion extracted chromatograms of the SM<sub>(ox)</sub>IRPPY peptide (monoisotopic [M + 2 H]<sup>+2</sup> mass = 440.2233 m/z). In this paper, we exploited the dimorphic  ...[more]

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