The Sperm Proteome of the Echiuran Urechis unicinctus (Annelida, Echiura)

Zhenkui Qin, Yanjie Zhang, Huawei Mu, Zhifeng Zhang*, Jianwen QIU

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

5 Citations (Scopus)


Sperm proteins presumably play critical roles in reproduction, but in many non-model animals their identities are unknown. A total of 147 sperm proteins from the echiuran worm Urechis unicinctus, the first sperm proteome in the phylum Annelida, are reported. The echiuran sperm proteome can be classified into diverse functional groups: energy metabolism (31%), protein synthesis and degradation (18%), spermatogenesis and sperm motility (12%), signal pathway (11%), ion channel and transport proteins (6%), cytoskeleton (4%), immunity and stress responses (3%), and fertilization (1%). These results will facilitate studies of mechanisms of fertilization in echiurans, as well as comparative studies of reproduction and evolution across lophotrochozoans. Data are available via ProteomeXchange with identifier PXD009176.

Original languageEnglish
Article number1800107
Issue number16
Publication statusPublished - Aug 2018

Scopus Subject Areas

  • Biochemistry
  • Molecular Biology

User-Defined Keywords

  • fertilization
  • Ka/Ks
  • LC-MS/MS
  • lophotrochozoa
  • proteomics


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