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| - | {{STRUCTURE_2lv1| PDB=2lv1 | SCENE= }} | |
| - | ===Solution-state NMR structure of prion protein mutant V210I at neutral pH=== | |
| - | {{ABSTRACT_PUBMED_22947063}} | |
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| - | ==Disease== | + | ==Solution-state NMR structure of prion protein mutant V210I at neutral pH== |
| - | [[http://www.uniprot.org/uniprot/PRIO_HUMAN PRIO_HUMAN]] Note=PrP is found in high quantity in the brain of humans and animals infected with neurodegenerative diseases known as transmissible spongiform encephalopathies or prion diseases, like: Creutzfeldt-Jakob disease (CJD), fatal familial insomnia (FFI), Gerstmann-Straussler disease (GSD), Huntington disease-like type 1 (HDL1) and kuru in humans; scrapie in sheep and goat; bovine spongiform encephalopathy (BSE) in cattle; transmissible mink encephalopathy (TME); chronic wasting disease (CWD) of mule deer and elk; feline spongiform encephalopathy (FSE) in cats and exotic ungulate encephalopathy (EUE) in nyala and greater kudu. The prion diseases illustrate three manifestations of CNS degeneration: (1) infectious (2) sporadic and (3) dominantly inherited forms. TME, CWD, BSE, FSE, EUE are all thought to occur after consumption of prion-infected foodstuffs.<ref>PMID:19936054</ref><ref>PMID:1671440</ref><ref>PMID:1975028</ref><ref>PMID:8461023</ref><ref>PMID:7902693</ref><ref>PMID:7906019</ref><ref>PMID:7913755</ref><ref>PMID:8909447</ref><ref>PMID:9266722</ref><ref>PMID:10790216</ref> Defects in PRNP are the cause of Creutzfeldt-Jakob disease (CJD) [MIM:[http://omim.org/entry/123400 123400]]. CJD occurs primarily as a sporadic disorder (1 per million), while 10-15% are familial. Accidental transmission of CJD to humans appears to be iatrogenic (contaminated human growth hormone (HGH), corneal transplantation, electroencephalographic electrode implantation, etc.). Epidemiologic studies have failed to implicate the ingestion of infected annimal meat in the pathogenesis of CJD in human. The triad of microscopic features that characterize the prion diseases consists of (1) spongiform degeneration of neurons, (2) severe astrocytic gliosis that often appears to be out of proportion to the degree of nerve cell loss, and (3) amyloid plaque formation. CJD is characterized by progressive dementia and myoclonic seizures, affecting adults in mid-life. Some patients present sleep disorders, abnormalities of high cortical function, cerebellar and corticospinal disturbances. The disease ends in death after a 3-12 months illness.<ref>PMID:19936054</ref><ref>PMID:1671440</ref><ref>PMID:1975028</ref><ref>PMID:8461023</ref><ref>PMID:7902693</ref><ref>PMID:7906019</ref><ref>PMID:7913755</ref><ref>PMID:8909447</ref><ref>PMID:9266722</ref><ref>PMID:10790216</ref> Defects in PRNP are the cause of fatal familial insomnia (FFI) [MIM:[http://omim.org/entry/600072 600072]]. FFI is an autosomal dominant disorder and is characterized by neuronal degeneration limited to selected thalamic nuclei and progressive insomnia.<ref>PMID:19936054</ref><ref>PMID:19927125</ref><ref>PMID:1347910</ref> Defects in PRNP are the cause of Gerstmann-Straussler disease (GSD) [MIM:[http://omim.org/entry/137440 137440]]. GSD is a heterogeneous disorder and was defined as a spinocerebellar ataxia with dementia and plaquelike deposits. GSD incidence is less than 2 per 100 million live births.<ref>PMID:19936054</ref><ref>PMID:19927125</ref><ref>PMID:10581485</ref><ref>PMID:2564168</ref><ref>PMID:1363810</ref><ref>PMID:7902972</ref><ref>PMID:7699395</ref><ref>PMID:7783876</ref><ref>PMID:8797472</ref><ref>PMID:9786248</ref><ref>PMID:11709001</ref> Defects in PRNP are the cause of Huntington disease-like type 1 (HDL1) [MIM:[http://omim.org/entry/603218 603218]]. HDL1 is an autosomal dominant, early onset neurodegenerative disorder with prominent psychiatric features.<ref>PMID:19936054</ref> Defects in PRNP are the cause of kuru (KURU) [MIM:[http://omim.org/entry/245300 245300]]. Kuru is transmitted during ritualistic cannibalism, among natives of the New Guinea highlands. Patients exhibit various movement disorders like cerebellar abnormalities, rigidity of the limbs, and clonus. Emotional lability is present, and dementia is conspicuously absent. Death usually occurs from 3 to 12 month after onset.<ref>PMID:19936054</ref> Defects in PRNP are the cause of spongiform encephalopathy with neuropsychiatric features (SENF) [MIM:[http://omim.org/entry/606688 606688]]; an autosomal dominant presenile dementia with a rapidly progressive and protracted clinical course. The dementia was characterized clinically by frontotemporal features, including early personality changes. Some patients had memory loss, several showed aggressiveness, hyperorality and verbal stereotypy, others had parkinsonian symptoms.<ref>PMID:19936054</ref> | + | <StructureSection load='2lv1' size='340' side='right'caption='[[2lv1]]' scene=''> |
| | + | == Structural highlights == |
| | + | <table><tr><td colspan='2'>[[2lv1]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LV1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2LV1 FirstGlance]. <br> |
| | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR, 20 models</td></tr> |
| | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2lv1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lv1 OCA], [https://pdbe.org/2lv1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2lv1 RCSB], [https://www.ebi.ac.uk/pdbsum/2lv1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2lv1 ProSAT]</span></td></tr> |
| | + | </table> |
| | + | <div style="background-color:#fffaf0;"> |
| | + | == Publication Abstract from PubMed == |
| | + | A major focus in prion structural biology studies is unraveling the molecular mechanism leading to the structural conversion of PrP(C) to its pathological form, PrP(Sc). In our recent studies, we attempted to understand the early events of the conformational changes leading to PrP(Sc) using as investigative tools point mutations clustered in the open reading frame of the human PrP gene and linked to genetic forms of human prion diseases. In the work presented here, we investigate the effect of pH on the nuclear magnetic resonance (NMR) structure of recombinant human PrP (HuPrP) carrying the pathological V210I mutation responsible for familial Creutzfeldt-Jakob disease. The NMR structure of HuPrP(V210I) determined at pH 7.2 shows the same overall fold as the previously determined structure of HuPrP(V210I) at pH 5.5. It consists of a disordered N-terminal tail (residues 90-124) and a globular C-terminal domain (residues 125-231) comprising three alpha-helices and a short antiparallel beta-sheet. Detailed comparison of three-dimensional structures of HuPrP(V210I) at pH 7.2 and 5.5 revealed significant local structural differences, with the most prominent pH-related structural variations clustered in the alpha(2)-alpha(3) interhelical region, at the interface of the beta(1)-alpha(1) loop, in helices alpha(1) and alpha(3), and in the beta(2)-alpha(2) loop region. The detailed analysis of interactions among secondary structure elements suggests a higher degree of structural ordering of HuPrP(V210I) under neutral-pH conditions, thus implying that spontaneous misfolding of PrP(C) may occur under acidic-pH conditions in endosomal compartments. |
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| - | ==Function==
| + | Structural Rearrangements at Physiological pH: Nuclear Magnetic Resonance Insights from the V210I Human Prion Protein Mutant.,Biljan I, Ilc G, Giachin G, Plavec J, Legname G Biochemistry. 2012 Sep 12. PMID:22947063<ref>PMID:22947063</ref> |
| - | [[http://www.uniprot.org/uniprot/PRIO_HUMAN PRIO_HUMAN]] 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). 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 (By similarity).<ref>PMID:12732622</ref><ref>PMID:19936054</ref><ref>PMID:20564047</ref>
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| - | ==About this Structure==
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| - | [[2lv1]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LV1 OCA].
| + | </div> |
| | + | <div class="pdbe-citations 2lv1" style="background-color:#fffaf0;"></div> |
| | | | |
| | ==See Also== | | ==See Also== |
| - | *[[Prion|Prion]] | + | *[[Prion 3D structures|Prion 3D structures]] |
| - | | + | == References == |
| - | ==Reference== | + | <references/> |
| - | <references group="xtra"/><references/> | + | __TOC__ |
| | + | </StructureSection> |
| | [[Category: Homo sapiens]] | | [[Category: Homo sapiens]] |
| - | [[Category: Biljan, I.]] | + | [[Category: Large Structures]] |
| - | [[Category: Giachin, G.]] | + | [[Category: Biljan I]] |
| - | [[Category: Ilc, G.]] | + | [[Category: Giachin G]] |
| - | [[Category: Legname, G.]] | + | [[Category: Ilc G]] |
| - | [[Category: Plavec, J.]] | + | [[Category: Legname G]] |
| - | [[Category: Membrane protein]]
| + | [[Category: Plavec J]] |
