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Ostrich eggshell peptides survival into the Miocene (6-9 Ma)

ABSTRACT: The oldest authenticated peptide sequences to date were reported in 2016 from 3.8 Ma old ostrich eggshell (OES) from the site of Laetoli, Tanzania (Demarchi et al., 2016). Here we demonstrate survival of the same sequences in 6.5-9Ma OES recovered from a palaeosteppe setting in northwestern China. The eggshell is thicker than those observed in extant species and consistent with the Liushu Struthio sp. ootaxon. These findings push the preservation of ancient proteins back to the Miocene and highlight their potential for paleontology, paleoecology and evolutionary biology.

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Struthio Camelus (ostrich)

TISSUE(S): Eggshell

SUBMITTER: Beatrice Demarchi

LAB HEAD: Beatrice Demarchi

PROVIDER: PXD035872 | Pride | 2022-12-29

REPOSITORIES: Pride

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Dataset's files

Source:

			Action	DRS
	20200221_QE7_nLC7_MEM_Collab_77min_DDA_Ancient_Struthio_Palto206.raw	Raw
	20200221_QE7_nLC7_MEM_Collab_77min_DDA_Procedural_BK.raw	Raw
	20200221_QE7_nLC7_MEM_QC_WashBK_01.raw	Raw
	20200221_QE7_nLC7_MEM_QC_WashBK_02.raw	Raw
	20200221_QE7_nLC7_MEM_QC_WashBK_03_prePALTO206.raw	Raw

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