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A Tobacco Homolog of DCN1 is Involved in Cellular Reprogramming and in Developmental Transitions Nature Precedings
Julia Hosp; Alexandra Ribarits; Katarzyna Szaszka; Yongfeng Jin; Alisher Tashpulatov; Marina Baumann; Tatiana Resch; Christina Friedmann; Elisabeth Ankele; Viktor Voronin; Klaus Palme; Alisher Touraev; Erwin Heberle-Bors.
Plant proteomes show remarkable plasticity in reaction to environmental challenges and during developmental transitions. Some of this adaptability comes from ubiquitin-mediated protein destruction regulated by cullin-RING E3 ubiquitin ligases (CRLs). CRLs are activated through modification of the cullin subunit with the ubiquitin-like protein RUB/NEDD8 by an E3 ligase called defective in cullin neddylation 1 (DCN1). Here we show that tobacco DCN1 binds ubiquitin and RUB/NEDD8, and associates with cullin. When knocked down by RNAi, tobacco pollen formation stopped and zygotic embryogenesis was blocked around the globular stage. Additionally, we found that RNAi of DCN1 inhibited the stress-triggered reprogramming of cultured microspores from their intrinsic...
Tipo: Manuscript Palavras-chave: Developmental Biology; Genetics & Genomics; Plant Biology.
Ano: 2011 URL: http://precedings.nature.com/documents/5728/version/1
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