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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Gene Review: 

cyb-1  -  Protein CYB-1

Caenorhabditis elegans

 
 
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High impact information on cyclin

  • This implies that the proper regulation of a cyclin E-Cdk complex by cki-2 is required for the elimination of the centrosome that occurs before or during oogenesis to ensure the assembly of a bipolar spindle in the C. elegans zygote [1].
  • The meiotic exit and polarity defects are separable, as inactivation of the B-type cyclin CYB-3 in pam-1 mutants rescues the meiotic exit delay but not the polarity defects [2].
  • OMA-1 proteolysis also depends on Cyclin B3 and on a ZIF-1-independent CUL-2-based E3 ubiquitin ligase complex, as well as the CUL-2-interacting protein ZYG-11 and the Skp1-related proteins SKR-1 and SKR-2 [3].
  • CONCLUSIONS: Our findings suggest that a CDK1/Cyclin B3-dependent activity links OMA-1 proteolysis to completion of the first cell cycle and support a model in which OMA-1 functions to prevent the premature activation of cell-fate determinants until after they are asymmetrically partitioned during the first mitosis [3].
  • Moreover, the 3' untranslated regions of each Caenorhabditis cyclin cDNA possess several copies of potential translational control elements shown in Xenopus and Drosophila maternal cyclin mRNAs to function during oogenesis and early embryogenesis [4].
 

Biological context of cyclin

  • This review focuses on the in vivo roles of cyclin-dependent kinases in C. elegans, and highlights novel findings implicating CDKs in coupling development to cell-cycle progression [5].

References

  1. Cell cycle regulators control centrosome elimination during oogenesis in Caenorhabditis elegans. Kim, D.Y., Roy, R. J. Cell Biol. (2006) [Pubmed]
  2. The puromycin-sensitive aminopeptidase PAM-1 is required for meiotic exit and anteroposterior polarity in the one-cell Caenorhabditis elegans embryo. Lyczak, R., Zweier, L., Group, T., Murrow, M.A., Snyder, C., Kulovitz, L., Beatty, A., Smith, K., Bowerman, B. Development (2006) [Pubmed]
  3. The Conserved Kinases CDK-1, GSK-3, KIN-19, and MBK-2 Promote OMA-1 Destruction to Regulate the Oocyte-to-Embryo Transition in C. elegans. Shirayama, M., Soto, M.C., Ishidate, T., Kim, S., Nakamura, K., Bei, Y., van den Heuvel, S., Mello, C.C. Curr. Biol. (2006) [Pubmed]
  4. Caenorhabditis elegans cyclin A- and B-type genes: a cyclin A multigene family, an ancestral cyclin B3 and differential germline expression. Kreutzer, M.A., Richards, J.P., De Silva-Udawatta, M.N., Temenak, J.J., Knoblich, J.A., Lehner, C.F., Bennett, K.L. J. Cell. Sci. (1995) [Pubmed]
  5. Cyclin-dependent kinases in C. elegans. Boxem, M. Cell division [electronic resource]. (2006) [Pubmed]
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