Cloning of four cyclins from maize indicates that higher plants have three structurally distinct groups of mitotic cyclins

Renaudin, J. P., Colasanti, J., Rime, H., Yuan, Z., Sundaresan, V. (July 1994) Cloning of four cyclins from maize indicates that higher plants have three structurally distinct groups of mitotic cyclins. Proc Natl Acad Sci U S A, 91 (15). pp. 7375-9. ISSN 0027-8424 (Print)

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While a large number of cyclins have been described in animals and yeasts, very limited information is available regarding cyclins in plants. We describe here the isolation of cDNA clones encoding four putative mitotic cyclins from maize. All four cyclins were able to induce maturation of Xenopus oocytes, demonstrating that they can act as mitotic cyclins in this system. Northern analysis showed that all four cyclins were expressed only in actively dividing tissues and organs, with a stronger correlation between expression and mitotic activity than is observed with cdc2. The deduced protein sequences suggest that the four maize cyclins belong to the cyclin A and B families identified from animal and yeast studies but that they cannot be described easily as either A-type or B-type cyclins. However, comparison with previously cloned plant cyclins shows that cyclins in higher plants form three distinct structural groups that have been conserved in both monocotyledonous and dicotyledonous species and that cyclins from all three groups are present within a single plant species.

Item Type: Paper
Uncontrolled Keywords: Amino Acid Sequence Animals Cloning, Molecular Cyclins/chemistry/ genetics Female Mitosis Molecular Sequence Data Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Xenopus laevis/genetics Zea mays/ genetics
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > Cyclins
organism description > plant > maize
organs, tissues, organelles, cell types and functions > organelles, types and functions > mitosis
CSHL Authors:
Communities: CSHL labs
Depositing User: Matt Covey
Date: 19 July 1994
Date Deposited: 03 Aug 2015 20:41
Last Modified: 09 Nov 2017 19:38
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