HAVELKOVÁ, Marie, Pavel MENŠÍK and Eberhard UNGER. The role of calmodulin in cell cycle. Journal of APPLIED BIOMEDICINE. Czech Republic: University of South Bohemia, 2005, 2005/3, 3 Suppl., p. S17-S18, 2 pp. ISSN 1214-0287.
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Basic information
Original name The role of calmodulin in cell cycle.
Name in Czech Úloha kalmodulinu v buněčném cyklu.
Authors HAVELKOVÁ, Marie (203 Czech Republic, guarantor), Pavel MENŠÍK (203 Czech Republic) and Eberhard UNGER (276 Germany).
Edition Journal of APPLIED BIOMEDICINE, Czech Republic, University of South Bohemia, 2005, 1214-0287.
Other information
Original language English
Type of outcome Article in a journal
Field of Study Genetics and molecular biology
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
RIV identification code RIV/00216224:14410/05:00013960
Organization unit Faculty of Education
Keywords in English Calmodulin; cell cycle; Ca2+; indirect immunofluorescence; anti-calmodulin antibody; rhodamine-conjugated phalloidin; cytoskeletal actin; karyokinesis;
Tags anti-calmodulin antibody, Ca2+, Calmodulin, cell cycle, cytoskeletal actin, indirect immunofluorescence, karyokinesis, rhodamine-conjugated phalloidin
Changed by Changed by: doc. MUDr. Marie Havelková, CSc., učo 1564. Changed: 25/4/2006 14:37.
Abstract
Calmodulin is a small, highly conserved, Ca2+-binding protein present in all eukaryotic cells. It is one of the mediators of Ca2+ signals induced by extracellular stimuli. Several lines of evidence have suggested that calmodulin is essential for eukaryotic cell proliferation. The intracellular localization of protein calmodulin and cytoskeletal actin in cells of yeast strain Yarrowia lipolytica has been studied by indirect immunofluorescence using anti-calmodulin antibody and rhodamine-conjugated phalloidin. We have found that there exist relationships between cytoskeletal components and protein calmodulin. Results: 1) the accumulation of calmodulin dots at the regions of cell growth suggests that this protein is important for cell polarity development in yeast; 2) calmodulin emerges in mentioned parts of the cell always sooner than actin. It proves that calmodulin is required for distribution of actin structures; 3) calmodulin is unconditionally needed for nuclear division.
Abstract (in Czech)
Kalmodulin je nízkomolekulární, fylogeneticky konzervativni, Ca2+ vázající protein, přítomný ve všech eukarytických buňkách. Literární údaje naznačovaly, že hraje důležitou roli v buněčné proliferaci. Pomocí metod nepřímé imunofluorescence jsme zjistili, že v průběhu buněčného cyklu dochází u kvasinek Yarrowia lipolytica ke kolokalizaci struktur aktinového cytoskeletu a calmodulinu. Dalšími experimenty bylo zjištěno: 1) kalmodulin je nezbytný pro polaritu buněk, 2) je bezpodmínečně nutný pro specifickou lokalizaci aktinu v buňce a tím i jeho funkci v buněčném cyklu, 3) bez přítomnosti kalmodlinu je inhibován buněčný cyklus v průběhu M-fáze - je porušena rovnoměrná distribuce chromozomů do dceřinných jader, neboť vznikají buňky s různým počtem jader, vzájemné se lišících obsahem DNA.
Links
MSM0021622421, plan (intention)Name: Škola a zdraví pro 21. století
Investor: Ministry of Education, Youth and Sports of the CR, School and Health for the 21st Century
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