2k5o
From Proteopedia
Mouse Prion Protein (121-231) with Mutation S170N
Structural highlights
Disease[PRIO_MOUSE] Note=Found in high quantity in the brain of humans and animals infected with degenerative neurological diseases such as kuru, Creutzfeldt-Jakob disease (CJD), Gerstmann-Straussler syndrome (GSS), scrapie, bovine spongiform encephalopathy (BSE), transmissible mink encephalopathy (TME), etc. Function[PRIO_MOUSE] May play a role in neuronal development and synaptic plasticity. May be required for neuronal myelin sheath maintenance. May play a role in iron uptake and iron homeostasis. Soluble oligomers are toxic to cultured neuroblastoma cells and induce apoptosis (in vitro) (By similarity). Association with GPC1 (via its heparan sulfate chains) targets PRNP to lipid rafts. Also provides Cu(2+) or ZN(2+) for the ascorbate-mediated GPC1 deaminase degradation of its heparan sulfate side chains.[1] [2] [3] [4] 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 PubMedThe recent introduction of bank vole (Clethrionomys glareolus) as an additional laboratory animal for research on prion diseases revealed an important difference when compared to the mouse and the Syrian hamster, since bank voles show a high susceptibility to infection by brain homogenates from a wide range of diseased species such as sheep, goats, and humans. In this context, we determined the NMR structure of the C-terminal globular domain of the recombinant bank vole prion protein (bvPrP) [bvPrP(121-231)] at 20 degrees C. bvPrP(121-231) has the same overall architecture as other mammalian PrPs, with three alpha-helices and an antiparallel beta-sheet, but it differs from PrP of the mouse and most other mammalian species in that the loop connecting the second beta-strand and helix alpha2 is precisely defined at 20 degrees C. This is similar to the previously described structures of elk PrP and the designed mouse PrP (mPrP) variant mPrP[S170N,N174T](121-231), whereas Syrian hamster PrP displays a structure that is in-between these limiting cases. Studies with the newly designed variant mPrP[S170N](121-231), which contains the same loop sequence as bvPrP, now also showed that the single-amino-acid substitution S170N in mPrP is sufficient for obtaining a well-defined loop, thus providing the rationale for this local structural feature in bvPrP. NMR structure of the bank vole prion protein at 20 degrees C contains a structured loop of residues 165-171.,Christen B, Perez DR, Hornemann S, Wuthrich K J Mol Biol. 2008 Nov 7;383(2):306-12. Epub 2008 Aug 26. PMID:18773909[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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