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Detection of Protein Interactions in Plant using a Gateway Compatible Bimolecular Fluorescence Complementation (BiFC) System
Published on: September 16, 2011
Spectrin-like proteins in plant nuclei
N C De Ruijter1, T Ketelaar, S S Blumenthal
1Lab. of Experimental Plant Morphology and Cell Biology, Department of Plant Sciences, Wageningen University, Arboretumlaan 4, Wageningen, 6703 BD, The Netherlands. norbert.deruijter@algem.pcm.wau.nl
Cell Biology International
|July 6, 2000
Summary
Spectrin-like proteins were found in plant nuclei, localized in distinct spots within the nucleoplasm and nuclear periphery. These proteins associate with the nuclear matrix and may stabilize interchromatin domains.
Area of Science:
- Plant cell biology
- Molecular biology
- Cytoskeleton research
Background:
- Spectrin proteins are crucial for animal cell structure and function.
- Their presence and role in plant nuclei remain largely unexplored.
Purpose of the Study:
- To investigate the presence and localization of spectrin-like proteins in plant nuclei.
- To determine the association of these proteins with nuclear structures.
Main Methods:
- Western blotting of isolated pea nuclei using anti-erythrocyte spectrin antibodies.
- Confocal laser scanning microscopy for immunolocalization within nuclei.
- Sequential extraction of nuclei with detergents, DNase I, RNase A, and high salt.
Main Results:
- Spectrin-like proteins detected in pea nuclei at 220-240 kDa and 60 kDa.
- Proteins localized to distinct spots in the nucleoplasm and nuclear periphery, excluding nucleoli.
- Increased signal intensity after sequential extraction suggests association with the nuclear matrix.
- Similar localization observed across various plant tissues.
Conclusions:
- This study provides the first evidence of spectrin-like protein presence and localization in plant nuclei.
- These proteins are associated with the nuclear matrix.
- They may play a role in stabilizing interchromatin domains within plant nuclei.
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