Identification and characterization of a rice MCM2 homologue required for DNA replycation
The pre-replication complex (pre-RC), including the core hexameric MCM2-7 complex, ensures that the eukaryotic genome is replicated only once per cell division cycle. In this study, we identified a rice minichromosome maintenance (MCM) homologue (OsMCM2) that functionally complemented fission yeast...
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Published in | BMB reports Vol. 41; no. 8; pp. 581 - 586 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
한국생화학분자생물학회
31.08.2008
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Subjects | |
Online Access | Get full text |
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Summary: | The pre-replication complex (pre-RC), including the core hexameric MCM2-7 complex, ensures that the eukaryotic genome is replicated only once per cell division cycle. In this study, we identified a rice minichromosome maintenance (MCM) homologue (OsMCM2) that functionally complemented fission yeast MCM2 (CDC19) mutants. We found OsMCM2 transcript expression in roots, leaves, and seeds, although expression levels differed slightly among the organs. Likewise, the OsMCM2 protein was ubiquitously expressed, but it was downregulated when nutritients were limiting, indicating that MCM2 expression (and therefore cell cycle progression) requires adequate nutrition. Yeast two-hybrid and GST pull-down assays demonstrated that OsMCM2 interacted with the COP9 signal-osome 5 (CSN5). Taken as a whole, our results indicated that OsMCM2 functions as a subunit of the rice MCM complex and interacts with CSN5 during developmental regulation. |
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Bibliography: | 2008003712 A50 G704-000278.2008.41.8.006 |
ISSN: | 1976-6696 1225-8687 0219-1024 |
DOI: | 10.5483/bmbrep.2008.41.8.581 |