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MeSH Review

Spisula

 
 
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High impact information on Spisula

  • In the clam, Spisula, two previously described proteins known as cyclin A and B display the unusual property of selective proteolytic degradation at the end of each mitosis [1].
  • Centrosomes isolated from Spisula solidissima oocytes contain rings and an unusual stoichiometric ratio of alpha/beta tubulin [2].
  • The eggs of the surf clam Spisula solidissima were artificially activated, homogenized at various times in cold 0.5 M MES buffer, 1mM EGTA at pH 6.5, and microtubule polymerization was induced by raising the temperature to 28 degrees C. In homogenates of unactivated eggs few microtubules form and no asters are observed [3].
  • Intracellular pH (pHi) measurements were performed in surf clam (Spisula solidissima) oocytes before and after artificial activation or fertilization [evidenced by germinal vesicle breakdown (GVBD)] by the dimethyloxazolidinedione (DMO) and 2',7'-bis-(2-carboxyethyl)-5-(and-6)-carboxyfluorescein (BCECF) methods [4].
  • The neurohormone serotonin (5HT) triggers meiosis reinitiation in oocytes of the pelecypod molluscs Spisula solidissima and Ruditapes philippinarum [5].
 

Biological context of Spisula

 

Anatomical context of Spisula

 

Associations of Spisula with chemical compounds

  • Germinal vesicle breakdown (GVBD) is the first visible response of the oocyte of Spisula solidissima to the neurohormone serotonin [6].
  • Nascent protein requirement for completion of meiotic maturation and pronuclear development: examination of fertilized and A-23187-activated surf clam (Spisula solidissima) eggs [8].
  • We have determined the presence of cysteine in the protein PL-I from the sperm of the surf clam Spisula solidissima [13].
  • The drugs at a concentration of 20 microM completely blocked germinal vesicle breakdown and 45Ca2+ uptake by Spisula oocytes [14].
  • Survey of the U.S. Atlantic Coast surf clam, Spisula solidissima, and clam products for anisakine nematodes and hyperparasitic protozoa [15].
 

Gene context of Spisula

  • Here, we report the sequences of two distinct p63/73-like homologues, both cloned from Spisula embryos [16].
  • Species such as the clam, Spisula solida, esterify dinophysistoxins to a great extent, and contain always more okadaic acid (OA) than dinophysistoxin-2 (DTX2) [17].
  • Levels of free PABP are limited by newly polyadenylated mRNA in early Spisula embryogenesis [18].
  • Purification and characterization of oocyte cytoplasmic tubulin and meiotic spindle tubulin of the surf clam Spisula solidissima [19].
  • Release of glucose-6-phosphate dehydrogenase from cortex of Spisula eggs at fertilization and its recombination after meiosis [20].
 

Analytical, diagnostic and therapeutic context of Spisula

  • The use of the Fura-2 imaging technique allowed single-cell measurements and defined changes induced by 5-HT in [Ca2+]i which is the net result of calcium uptake and release of intracellular calcium from storage sites in individual Spisula oocytes [10].
  • Here, we report studies including UV-crosslinking and immunoblotting assays to characterise PABP in the early developmental stages of the clam Spisula solidissima [18].

References

  1. Cdc2 protein kinase is complexed with both cyclin A and B: evidence for proteolytic inactivation of MPF. Draetta, G., Luca, F., Westendorf, J., Brizuela, L., Ruderman, J., Beach, D. Cell (1989) [Pubmed]
  2. Centrosomes isolated from Spisula solidissima oocytes contain rings and an unusual stoichiometric ratio of alpha/beta tubulin. Vogel, J.M., Stearns, T., Rieder, C.L., Palazzo, R.E. J. Cell Biol. (1997) [Pubmed]
  3. In vitro polymerization of microtubules into asters and spindles in homogenates of surf clam eggs. Weisenberg, R.C., Rosenfeld, A.C. J. Cell Biol. (1975) [Pubmed]
  4. Intracellular pH increase driven by an Na+/H+ exchanger upon activation of surf clam oocytes. Dubé, F., Eckberg, W.R. Dev. Biol. (1997) [Pubmed]
  5. Differences in tyrosine phosphorylation of oocyte key proteins during 5HT-induced meiosis reinitiation in two bivalve species. Abdelmajid, H., Rivailler, P., Krantic, S., Guerrier, P. Exp. Cell Res. (1994) [Pubmed]
  6. Pharmacology of the serotonin-induced meiosis reinitiation in Spisula solidissima oocytes. Krantic, S., Dube, F., Quirion, R., Guerrier, P. Dev. Biol. (1991) [Pubmed]
  7. Protein phosphorylation during 5-hydroxytryptamine-induced maturation of Spisula oocytes. Haneji, T., Koide, S.S. Exp. Cell Res. (1988) [Pubmed]
  8. Nascent protein requirement for completion of meiotic maturation and pronuclear development: examination of fertilized and A-23187-activated surf clam (Spisula solidissima) eggs. Longo, F.J., Cook, S., Mathews, L., Wright, S.J. Dev. Biol. (1991) [Pubmed]
  9. Modulation of serotonin binding sites in Spisula solidissima oocytes by phorbol ester. Rivailler, P., Krantic, S. Biochem. Pharmacol. (1996) [Pubmed]
  10. Effect of serotonin and tricyclic antidepressants on intracellular calcium concentrations in Spisula oocytes. Juneja, R., Ito, E., Koide, S.S. Cell Calcium (1994) [Pubmed]
  11. Localization and quantification of gonad serotonin during gametogenesis of the surf clam, Spisula solidissima. Masseau, I., Bannon, P., Anctil, M., Dubé, F. Biol. Bull. (2002) [Pubmed]
  12. Comparative ultracytochemical study of the acrosome in four different Veneroida species from the Turkish coast. Erkan, M., Sousa, M., Baldaia, L. J. Submicrosc. Cytol. Pathol. (2002) [Pubmed]
  13. Cysteine-containing histone H1-like (PL-I) proteins of sperm. Zhang, F., Lewis, J.D., Ausió, J. Mol. Reprod. Dev. (1999) [Pubmed]
  14. Regulation of serotonin-induced calcium uptake in Spisula oocytes by tricyclic antidepressants. Juneja, R., Ueno, H., Segal, S.J., Koide, S.S. Neurosci. Lett. (1993) [Pubmed]
  15. Survey of the U.S. Atlantic Coast surf clam, Spisula solidissima, and clam products for anisakine nematodes and hyperparasitic protozoa. Payne, W.L., Gerding, T.A., Dent, R.G., Bier, J.W., Jackson, G.J. J. Parasitol. (1980) [Pubmed]
  16. p63/73 homologues in surf clam: novel signaling motifs and implications for control of expression. Cox, R.L., Stephens, R.E., Reinisch, C.L. Gene (2003) [Pubmed]
  17. Differential dynamics of dinophysistoxins and pectenotoxins, part II: offshore bivalve species. Vale, P. Toxicon (2006) [Pubmed]
  18. Levels of free PABP are limited by newly polyadenylated mRNA in early Spisula embryogenesis. de Melo Neto, O.P., Walker, J.A., Martins de Sa, C.M., Standart, N. Nucleic Acids Res. (2000) [Pubmed]
  19. Purification and characterization of oocyte cytoplasmic tubulin and meiotic spindle tubulin of the surf clam Spisula solidissima. Suprenant, K.A., Rebhun, L.I. J. Cell Biol. (1984) [Pubmed]
  20. Release of glucose-6-phosphate dehydrogenase from cortex of Spisula eggs at fertilization and its recombination after meiosis. Ii, I., Rebhun, L.I. Dev. Biol. (1982) [Pubmed]
 
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