Chem. J. Chinese Universities

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Optimized Separation and Identification of Proteome from the Baccal
Ganalion of Aplysia(Notarcus leachii cirrosus Stimpson)

CHEN Dong-Shi1; HUANG He-Qing1,2,3*; WU Han-Zhi1,3; CAI Zong-Wei3,4   

  1. 1. The Key Laboratory of MOE for Cell Biology and Tumor Cell Engineering,
    School of Life Science,
    2. State Key Laboratory of Marine Environmental Science,
    3. State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen
    University, Xiamen 361005, China;
    4. Department of Chemistry, Hong Kong Baptist University, Hong Kong, China
  • Received:2005-06-13 Revised:1900-01-01 Online:2006-07-10 Published:2006-07-10
  • Contact: HUANG He-Qing

Abstract: A separation method of proteome from the buccal ganglion of aplysia(Notarcus leachii cirrosus Stimpson, NLCS) with two-dimensional polyacrylamide gel electrophoresis(2D-PAGE) was optimized, gaining about 300 protein spots. Mass spectrogram of peptide mass fingerprint(PMF) of 96 protein spots from the BG were obtained by a combined off-line technique of the matrix-assisted laser desorption ionization mass spectrometry(MALDI-TOF MS) and the emzymolysis in gel. Based on the identification via the databases searches and PMF maps, we found that four of 96 proteins in the gel showed the characteristics with high match scores, which were indicated to be framework proteins tubulin, actin, ribulose-1,5-bisphosphate carboxylase and oxygenase in neurons cell; meanwhile, a peptide mating pheromone precursor was found. Fifty-six proteins in BG were further classified by a LOC tree software according to the search result of subcellular localization.

Key words: Aplysia, Buccal ganglion, Proteome, 2D-PAGE, Mass spectrometry

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