4emz | pdb_00004emz

HIV-1 Nef in complex with MHC-I cytoplasmic domain and Mu1 adaptin subunit of AP1 adaptor (second domain)

spinqualitylabelsall models 4emz, resolution 2.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4emz is a 6 chain structure with sequence from Homo sapiens, Human immunodeficiency virus 1 and Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: MSE Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [Q90VU7_9HIV1] Publication Abstract from PubMed The HIV-1 protein Nef inhibits antigen presentation by class I major histocompatibility complex (MHC-I). We determined the mechanism of this activity by solving the crystal structure of a protein complex comprising Nef, the MHC-I cytoplasmic domain (MHC-I CD) and the mu1 subunit of the clathrin adaptor protein complex 1. A ternary, cooperative interaction clamps the MHC-I CD into a narrow binding groove at the Nef-mu1 interface, which encompasses the cargo-recognition site of mu1 and the proline-rich strand of Nef. The Nef C terminus induces a previously unobserved conformational change in mu1, whereas the N terminus binds the Nef core to position it optimally for complex formation. Positively charged patches on mu1 recognize acidic clusters in Nef and MHC-I. The structure shows how Nef functions as a clathrin-associated sorting protein to alter the specificity of host membrane trafficking and enable viral evasion of adaptive immunity. Structural basis of evasion of cellular adaptive immunity by HIV-1 Nef.,Jia X, Singh R, Homann S, Yang H, Guatelli J, Xiong Y Nat Struct Mol Biol. 2012 Jun 17;19(7):701-6. doi: 10.1038/nsmb.2328. PMID:22705789 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Adaptin 3D structures Protein Nef

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