Abstract
Four deletion mutantDictyostelium myosin II heavy chain genes, MyΔ824-941 (Δ1/ 3S2), MyΔ934-1454 (ΔS2), MyΔ934-1194 (ΔS2-1) and MyΔ1 157–1454 (ΔS2-2), were transformed by standard electfoporation into mhcA-cells (T-null), a mutantDictyostelium cell devoid of endogenous myosin II heavy chain gene. The growth, development and formation of fruiting bodies of cells expressing those mutant myosin II s under suspension culture were investigated by comparison with the wild type cell. The results indicate that internal deletion of myosin II affeds the growth and development ofDictyastelium. Furthermore, the longer the length of deletion, the more serious the defect in phenotype.
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References
De Lozanne, A., Spudich, J. A., Disruption of theDictyostelium myosin heavy chain gene by homologous recombination,Science, 1987, 236: 1086.
Spudich, J. A., In pursuit of myosin function,Cell Regulation, 1989, 1:1.
Sussman, M., Cultivation and synchronous morphogenesis ofDictyostelium under controlled experimental conditions,Meth. Cell Biol., 1987, 28: 9.
Egelhoff, T. T., Brown, S. S., Spudich, J. A., Spatial and temporal control of nonmuscle myosin localization: Identification of a domain that is necessary for myosin filament disassemblyin vivo, J. Cell Biol., 1991, 112: 677.
Laemmli, U.K., Cleavage of structural proteins during the assembly of the head of bacteriophage T4,Nature, 1970, 227: 680.
Kubalek, E. W., Uyeda, T. Q. P., Spudich, J. A., ADictyostelium myosin II lacking a proximal 58-KDa portion of the tail is functionalin vitro andin vivo, Mol. Biol. Cell, 1992, 3: 1455.
Uyeda, T. Q. P., Titus, M. A., The myosin ofDictyostelium, Dictyostelium-the model organism for basic biology, Tokyo: Tokyo University Press, 1997.
Harrington, W. F.et al., Contraction of myofibrils in the presence of antibodies to myosin subfragment 2, inProc. Natl. Acad. Sci. USA, 1990, 87: 7453.
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Shu, S., Uyeda, T.Q.P., Liu, A. et al. Effect of internal deletion of Myosin II on growth and development ofDictyostelium discoideum . Chin. Sci. Bull. 44, 811–816 (1999). https://doi.org/10.1007/BF02885026
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DOI: https://doi.org/10.1007/BF02885026