Identification of reproduction-related proteins and characterization of the protein disulfide isomerase A6 cDNA in ovaries of the giant tiger shrimp Penaeus monodon

Mar 13, 2012Comparative biochemistry and physiology. Part D, Genomics & proteomics

Reproductive proteins and the role of a protein helper in the ovaries of giant tiger shrimp

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Abstract

A total of 335 protein spots were identified in the ovarian development of the giant tiger shrimp.

  • 183 protein spots were examined from vitellogenic (stage II) ovaries, with 75 (40.98%) matching known proteins.
  • 152 protein spots were analyzed from mature (stage IV) ovaries, with 59 (38.82%) matching known proteins.
  • In eyestalk-ablated broodstock, 270 protein spots were characterized, with 167 and 103 spots from respective ovarian stages.
  • Among these, 95 (56.89%) and 62 (60.19%) spots matched known proteins in the respective stages.
  • The protein disulfide isomerase A6 (PmPDIA6) was identified as being up-regulated in stage III ovaries of intact shrimp.
  • Eyestalk ablation resulted in lower expression levels of PmPDIA6 across all ovarian development stages compared to intact broodstock.

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