Plant Mol Biol (2017) 93:79–96 DOI 10.1007/s11103-016-0548-6 Novel interaction between CCR4 and CAF1 in rice CCR4–NOT deadenylase complex 1 1 1 1 ei-LunW Chou · ue-LinY Chung · Jhen-Cheng Fang · Chung-An Lu Received: 7 April 2016 / Accepted: 28 September 2016 / Published online: 6 October 2016 © Springer Science +Business Media Dordrecht 2016 Abstract CCR4 proteins that contain LRR motifs. Here, two rice Key message Rice is an important crop in the world. CCR4 homologous genes, OsCCR4a and OsCCR4b , were , little However is known about rice deadenylation, mRNA identified. The isolated recombinant exonuclease–endo - which is an important regulation step of gene expression at nuclease–phosphatase domain of OsCCR4a and OsCCR4b the post-transcriptional level. The CCR4–NOT1 complex exhibited 3′–5′ exonuclease activity in vitro, and point contains two key components, CCR4 and CAF1, which are mutation of a catalytic residue in this domain disrupted the the main cytoplasmic ses in eukaryotic deadenyla cells. In deadenylase activity. Both OsCCR4a and OsCCR4b fluo - yeast and humans, CCR4 can interact with CAF1 via its rescent fusion proteins were localized in the rice cytoplasm N-terminal LRR domain. , no CCR4 protein However con - and nucleus, and both associated with
Plant Molecular Biology – Springer Journals
Published: Oct 6, 2016
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