4n5c | pdb_00004n5c

Crystal structure of Ypp1

spinqualitylabelsall models 4n5c, resolution 3.25Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4n5c is a 8 chain structure with sequence from Baker's yeast. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. NonStd Res: MSE Related: 4n5a Gene: YPP1, YGR198W, G7594 (Baker's yeast) Resources: FirstGlance, OCA, RCSB, PDBsum Function [YPP1_YEAST] Involved in endocytosis. Publication Abstract from PubMed Plasma membrane PI4P helps determine the identity of this membrane and plays a key role in signal transduction as the precursor of PI(4,5)P2 and its metabolites. Here, we report the atomic structure of the protein scaffold that is required for the plasma membrane localization and function of Stt4/PI4KIIIalpha, the PI 4-kinase responsible for this PI4P pool. Both proteins of the scaffold, Efr3 and YPP1/TTC7, are composed of alpha-helical repeats, which are arranged into a rod in Efr3 and a superhelix in Ypp1. A conserved basic patch in Efr3, which binds acidic phospholipids, anchors the complex to the plasma membrane. Stt4/PI4KIIIalpha is recruited by interacting with the Ypp1 C-terminal lobe, which also binds to unstructured regions in the Efr3 C terminus. Phosphorylation of this Efr3 region counteracts Ypp1 binding, thus providing a mechanism through which Stt4/PI4KIIIalpha recruitment, and thus a metabolic reaction of fundamental importance in cell physiology, can be regulated. Structural insights into assembly and regulation of the plasma membrane phosphatidylinositol 4-kinase complex.,Wu X, Chi RJ, Baskin JM, Lucast L, Burd CG, De Camilli P, Reinisch KM Dev Cell. 2014 Jan 13;28(1):19-29. doi: 10.1016/j.devcel.2013.11.012. Epub 2013, Dec 19. PMID:24360784 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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