2hbp | pdb_00002hbp

Solution Structure of Sla1 Homology Domain 1

spinqualitylabelsall models 2hbp, 20 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2hbp is a 1 chain structure with sequence from Atcc 18824. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: SLA1 (ATCC 18824) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [SLA1_YEAST] Component of the PAN1 actin cytoskeleton-regulatory complex required for the internalization of endosomes during actin-coupled endocytosis. The complex links the site of endocytosis to the cell membrane-associated actin cytoskeleton. Mediates uptake of external molecules and vacuolar degradation of plasma membrane proteins. Plays a role in the proper organization of the cell membrane-associated actin cytoskeleton and promotes its destabilization. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Adaptor proteins play important endocytic roles including recognition of internalization signals in transmembrane cargo. Sla1p serves as the adaptor for uptake of transmembrane proteins containing the NPFxD internalization signal, and is essential for normal functioning of the actin cytoskeleton during endocytosis. The Sla1p homology domain 1 (SHD1) within Sla1p is responsible for recognition of the NPFxD signal. This study presents the NMR structure of the NPFxD-bound state of SHD1 and a model for the protein-ligand complex. The alpha+beta structure of the protein reveals an SH3-like topology with a solvent-exposed hydrophobic ligand binding site. NMR chemical shift perturbations and effects of structure-based mutations on ligand binding in vitro define residues that are key for NPFxD binding. Mutations that abolish ligand recognition in vitro also abolish NPFxD-mediated receptor internalization in vivo. Thus, SHD1 is a novel functional domain based on SH3-like topology, which employs a unique binding site to recognize the NPFxD endocytic internalization signal. Its distant relationship with the SH3 fold endows this superfamily with a new role in endocytosis. Structure of Sla1p homology domain 1 and interaction with the NPFxD endocytic internalization motif.,Mahadev RK, Di Pietro SM, Olson JM, Piao HL, Payne GS, Overduin M EMBO J. 2007 Apr 4;26(7):1963-71. Epub 2007 Mar 15. PMID:17363896 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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