3wp1

Phosphorylation-dependent interaction between tumor suppressors Dlg and Lgl

spinqualitylabelsall models 3wp1, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3wp1 is a 2 chain structure with sequence from Homo sapiens and Rattus norvegicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.804Å Ligands: SEP, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function DLG4_RAT Interacts with the cytoplasmic tail of NMDA receptor subunits and shaker-type potassium channels. Required for synaptic plasticity associated with NMDA receptor signaling. Overexpression or depletion of DLG4 changes the ratio of excitatory to inhibitory synapses in hippocampal neurons. May reduce the amplitude of ASIC3 acid-evoked currents by retaining the channel intracellularly. May regulate the intracellular trafficking of ADR1B. Publication Abstract from PubMed The tumor suppressors Discs Large (Dlg), Lethal giant larvae (Lgl) and Scribble are essential for the establishment and maintenance of epithelial cell polarity in metazoan. Dlg, Lgl and Scribble are known to interact strongly with each other genetically and form the evolutionarily conserved Scribble complex. Despite more than a decade of extensive research, it has not been demonstrated whether Dlg, Lgl and Scribble physically interact with each other. Here, we show that Dlg directly interacts with Lgl in a phosphorylation-dependent manner. Phosphorylation of any one of the three conserved Ser residues situated in the central linker region of Lgl is sufficient for its binding to the Dlg guanylate kinase (GK) domain. The crystal structures of the Dlg4 GK domain in complex with two phosphor-Lgl2 peptides reveal the molecular mechanism underlying the specific and phosphorylation-dependent Dlg/Lgl complex formation. In addition to providing a mechanistic basis underlying the regulated formation of the Scribble complex, the structure of the Dlg/Lgl complex may also serve as a starting point for designing specific Dlg inhibitors for targeting the Scribble complex formation.Cell Research advance online publication 11 February 2014; doi:10.1038/cr.2014.16. Phosphorylation-dependent interaction between tumor suppressors Dlg and Lgl.,Zhu J, Shang Y, Wan Q, Xia Y, Chen J, Du Q, Zhang M Cell Res. 2014 Feb 11. doi: 10.1038/cr.2014.16. PMID:24513855 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Postsynaptic density protein 3D structures

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