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The isolation of lupine cDNA clone coding for putative cyclin protein
J Deckert1, J Jeleńska, E A Gwóźdź
1Laboratory of Plant Ecophysiology, A Mickiewicz University, Poznan, Poland.
Biochimie
|January 1, 1996
Summary
Researchers identified a yellow lupine cyclin B gene, crucial for regulating plant cell division. This discovery expands our understanding of cell cycle control in plants.
Area of Science:
- Molecular Biology
- Plant Science
- Cell Biology
Background:
- The p34cdc2 protein kinase and cyclin complex regulates eukaryotic cell division.
- Research has primarily focused on yeast and animal models.
- Cyclins are essential proteins controlling cell cycle progression.
Purpose of the Study:
- To isolate and characterize a cyclin cDNA clone from yellow lupine (Lupinus luteus).
- To investigate the role of plant cyclins in cell division.
- To determine the type of cyclin identified in yellow lupine.
Main Methods:
- Isolation of a complementary DNA (cDNA) clone from yellow lupine.
- Sequence analysis of the isolated cDNA clone (CycBla-ll).
- Amino acid comparison with known cyclin proteins.
Main Results:
- A 1692 bp cDNA clone, CycBla-ll, was isolated from yellow lupine.
- The clone encodes a protein with a predicted molecular mass of 48.7 kDa.
- The lupine cyclin contains conserved destruction and cyclin box domains, characteristic of mitotic cyclins.
- Sequence analysis confirmed CycBla-ll represents a mitotic cyclin of type B.
Conclusions:
- The identified yellow lupine cyclin (CycBla-ll) is a mitotic cyclin B.
- This finding contributes to understanding cell cycle regulation in plants.
- The conserved domains suggest functional similarity to cyclins in other eukaryotes.