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Spatial organization of the sperm cell glycoproteome

ABSTRACT: Sperm cells are terminally differentiated cells that are essential for reproduction in sexually reproducing species. Consistent with their highly specialized function, sperm cells harbor a unique proteome containing many proteins not expressed in somatic cells. In contrast, the post-translational landscape of the sperm proteome remains largely unexplored, limiting our understanding of how modifications such as glycosylation impact sperm function and sperm-egg interactions. Here, we used glycopeptide-centric glycoproteomics to comprehensively characterize protein N-glycosylation in sperm from three mammalian species, revealing clear conservation of glycosylation profiles. We find that glycosylation patterns in sperm proteins are distinct from those in plasma, with as clear distinctive features less sialyation and more paucimannosylation in sperm. Moreover, based on their subcellular location, sperm protein glycosylation varies, with paucimannose species enriched in the acrosomal vesicle, oligomannose species in the sperm head membrane, and complex glycan species in the acrosomal membrane.

INSTRUMENT(S): Orbitrap Fusion Lumos

ORGANISM(S): Bos Taurus (bovine) Homo Sapiens (human) Sus Scrofa Domesticus (domestic Pig)

TISSUE(S): Spermatozoid, Sperm

SUBMITTER: Rensong Ji

LAB HEAD: Albert J.R. Heck

PROVIDER: PXD056661 | Pride | 2024-12-19

REPOSITORIES: Pride

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			Action	DRS
	20220204_L1_UM5_zenez001_SA_EXT00_glycoprofile_BOVINEsperm_allids_01.raw	Raw
	20220204_L1_UM5_zenez001_SA_EXT00_glycoprofile_BOVINEsperm_allids_02.raw	Raw
	20220204_L1_UM5_zenez001_SA_EXT00_glycoprofile_BOVINEsperm_allids_03.raw	Raw
	20220204_L1_UM5_zenez001_SA_EXT00_glycoprofile_BOVINEsperm_glycoEThcD_01.raw	Raw
	20220204_L1_UM5_zenez001_SA_EXT00_glycoprofile_BOVINEsperm_glycoEThcD_02.raw	Raw

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