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| Content Provider | PubMed Central |
|---|---|
| Author | Saleh, Abdelaty Raul, Alvarez-venegas Yilmaz, Mehtap Oahn-le, Guichuan Hou, Monther Ayed, Sadder Al-abdallat, Yuannan Xia, Guoqinq Lu, Istvan Zoya, Ladunga |
| Abstract | Gene duplication followed by functional specialization is a potent force in the evolution of biological diversity. A comparative study of two highly conserved duplicated genes, ARABIDOPSIS TRITHORAX-LIKE PROTEIN1 (ATX1) and ATX2, revealed features of both partial redundancy and of functional divergence. Although structurally similar, their regulatory sequences have diverged, resulting in distinct temporal and spatial patterns of expression of the ATX1 and ATX2 genes. We found that ATX2 methylates only a limited fraction of nucleosomes and that ATX1 and ATX2 influence the expression of largely nonoverlapping gene sets. Even when coregulating shared targets, ATX1 and ATX2 may employ different mechanisms. Most remarkable is the divergence of their biochemical activities: both proteins methylate K4 of histone H3, but while ATX1 trimethylates it, ATX2 dimethylates it. ATX2 and ATX1 provide an example of separated K4 di from K4 trimethyltransferase activity. |
| Related Links | http://dx.doi.org/10.1105/tpc.107.056614 |
| Starting Page | 568 |
| File Format | |
| ISSN | 1532298X |
| e-ISSN | 1532298X |
| Journal | The Plant Cell |
| Issue Number | 3 |
| Volume Number | 20 |
| Language | English |
| Publisher | American Society of Plant Biologists |
| Publisher Date | 2008-03-01 |
| Access Restriction | Open |
| Rights Holder | American Society of Plant Biologists |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Plant Science |
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