By Richard B. Meagher, Elizabeth C. McKinney (auth.), C. J. Staiger, F. Baluška, D. Volkmann, P. W. Barlow (eds.)
Actin is a really ample protein that contains a dynamic polymeric community found in all eukaryotic cells, referred to as the actin cytoskeleton. The constitution and serve as of the actin cytoskeleton, that's modulated by way of a plethora of actin-binding proteins, plays a various variety of mobile roles. Well-documented services for actin contain: delivering the molecular tracks for cytoplasmic streaming and organelle hobbies; formation of tethers that advisor the mobilephone plate to the department web site in the course of cytokinesis; production of honeycomb-like arrays that enmesh and immobilize plastids in distinctive subcellular styles; assisting the vesicle site visitors and cytoplasmic association crucial for the directional secretory mechanism that underpins tip development of sure cells; and coordinating the flowery cytoplasmic responses to additional- and intracellular indications. the former 20 years have witnessed a huge accumulation of knowledge in terms of the mobile, biochemical, and molecular facets of a lot of these primary mobile strategies. This triggered the editors to place jointly a various choice of themes, contributed through tested foreign specialists, regarding the plant actin cytoskeleton. as the actin cytoskeleton impinges on a large number of strategies serious for plant development and improvement, in addition to for responses to the surroundings, the booklet might be important to any researcher, from the complex undergraduate to the senior investigator, who's attracted to those components of plant phone biology.
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Extra info for Actin: A Dynamic Framework for Multiple Plant Cell Functions
The important point to emerge from this 2. Myosins 31 analysis is that all the myosin genes identified from plants belong to unique classes which do not contain animal or protozoan myosins. 2. PLANT MYOSIN CLASS VIII The plant myosin class VIII contains so far seven myosin sequences, four of which are Arabidopsis myosins, two are Helianthus myosins and one is a Zea myosin. , 1994) of Arabidopsis thaliana, HaMYOl and HaMY03 of Helianthus annus (Vugrek & Menzel, 1997, unpublished results), and ZmZMM3 of Zea mays (Liu & Pesacreta, 1999, unpublished results) are between 1099 and 1166 aa in length and have a predicted heavy chain size of around 130 kDa.
Nucl Acids Res 22: 4673-4680 Titus MA (1993) Myosins. CUIT Opin Cell Bioi 5: 77-81 Turkina MV, Kulikova AL, Sokolov 01, Bogatyrev VA and Kursanov AL (1987) Actin and myosin-filaments from the conducting tissues of Heracleum sosnowskyi. Plant Physiol Biochem 25: 689-696 Vahey M, Titus M, Trautwein Rand Scordilis S (1982) Tomato actin and myosin: Contractile proteins from a higher land plant. Cell Motil Cytoskel 2: 131-147 Valster AH and Hepler PK (1997) Caffeine inhibition of cytokinesis: Effect on the phragmoplast cytoskeleton in living Tradescantia stamen hair cells.
1995), biochemical and immunofluorescence studies using heterologous myosin antibodies have detected myosin-like proteins. , 1988, 1996). , 1995) and showed that the antibodies were localized at different locations in 2. Myosins 37 the cell. , 1995a, 1995b). , 1999). Two myosin-like proteins (170 kDa and 175 kDa) were biochemically isolated from Nicotiana tabacum Bright Yellow-2 (BY-2) cells and shown to translocate rhodamine-phalloidin-labeled F-actin in vitro and to participate in cytoplasmic streaming.