4ct5

DDX6DDX6

Structural highlights 4ct5 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3Å Ligands: Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease DDX6_HUMAN Note=A chromosomal aberration involving DDX6 may be a cause of hematopoietic tumors such as B-cell lymphomas. Translocation t(11;14)(q23;q32). Function DDX6_HUMAN In the process of mRNA degradation, may play a role in mRNA decapping. Publication Abstract from PubMed MicroRNAs (miRNAs) control gene expression by regulating mRNA translation and stability. The CCR4-NOT complex is a key effector of miRNA function acting downstream of GW182/TNRC6 proteins. We show that miRNA-mediated repression requires the central region of CNOT1, the scaffold protein of CCR4-NOT. A CNOT1 domain interacts with CNOT9, which in turn interacts with the silencing domain of TNRC6 in a tryptophan motif-dependent manner. These interactions are direct, as shown by the structure of a CNOT9-CNOT1 complex with bound tryptophan. Another domain of CNOT1 with an MIF4G fold recruits the DEAD-box ATPase DDX6, a known translational inhibitor. Structural and biochemical approaches revealed that CNOT1 modulates the conformation of DDX6 and stimulates ATPase activity. Structure-based mutations showed that the CNOT1 MIF4G-DDX6 interaction is important for miRNA-mediated repression. These findings provide insights into the repressive steps downstream of the GW182/TNRC6 proteins and the role of the CCR4-NOT complex in posttranscriptional regulation in general. Structural and Biochemical Insights to the Role of the CCR4-NOT Complex and DDX6 ATPase in MicroRNA Repression.,Mathys H, Basquin J, Ozgur S, Czarnocki-Cieciura M, Bonneau F, Aartse A, Dziembowski A, Nowotny M, Conti E, Filipowicz W Mol Cell. 2014 Apr 22. pii: S1097-2765(14)00269-X. doi:, 10.1016/j.molcel.2014.03.036. PMID:24768538 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Helicase 3D structures

spinqualitylabelsall models 4ct5, resolution 3.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image