3dhm

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{{Seed}}
 
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[[Image:3dhm.jpg|left|200px]]
 
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==Beta 2 microglobulin mutant D59P==
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The line below this paragraph, containing "STRUCTURE_3dhm", creates the "Structure Box" on the page.
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<StructureSection load='3dhm' size='340' side='right'caption='[[3dhm]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[3dhm]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DHM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3DHM FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3dhm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3dhm OCA], [https://pdbe.org/3dhm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3dhm RCSB], [https://www.ebi.ac.uk/pdbsum/3dhm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3dhm ProSAT]</span></td></tr>
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{{STRUCTURE_3dhm| PDB=3dhm | SCENE= }}
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[https://omim.org/entry/241600 241600]. Affected individuals show marked reduction in serum concentrations of immunoglobulin and albumin, probably due to rapid degradation.<ref>PMID:16549777</ref> Note=Beta-2-microglobulin may adopt the fibrillar configuration of amyloid in certain pathologic states. The capacity to assemble into amyloid fibrils is concentration dependent. Persistently high beta(2)-microglobulin serum levels lead to amyloidosis in patients on long-term hemodialysis.<ref>PMID:3532124</ref> <ref>PMID:1336137</ref> <ref>PMID:7554280</ref> <ref>PMID:4586824</ref> <ref>PMID:8084451</ref> <ref>PMID:12119416</ref> <ref>PMID:12796775</ref> <ref>PMID:16901902</ref> <ref>PMID:16491088</ref> <ref>PMID:17646174</ref> <ref>PMID:18835253</ref> <ref>PMID:18395224</ref> <ref>PMID:19284997</ref>
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== Function ==
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[https://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN] Component of the class I major histocompatibility complex (MHC). Involved in the presentation of peptide antigens to the immune system.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dh/3dhm_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3dhm ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Beta2-microglobulin (beta2m) is the light chain component of class I major histocompatibility complex (MHC-I). beta2m is an intrinsically amyloidogenic protein that can assemble into amyloid fibrils in vitro and in vivo. Several recent reports suggested that the polypeptide loop comprised between beta-strands D and E of beta2m is important for protein stability and for the protein propensity to aggregate as amyloid fibrils. In particular, the roles of Trp60 for MHC-I assembly and beta2m stability have been highlighted by showing that the beta2m Trp60--&gt;Gly mutant is more stable and less prone to aggregation than the wild type protein. To further analyse such properties, the Trp60--&gt;Cys and Asp59--&gt;Pro beta2m mutants have been expressed, purified, and their crystal structures determined. The stability to thermal denaturation and propensity to fibrillar aggregation have also been analysed. The experimental evidences gathered on the two mutants reinforce the hypothesis that conformational strain in the DE loop can affect beta2m stability and amyloid aggregation properties.
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===Beta 2 microglobulin mutant D59P===
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DE loop mutations affect beta2-microglobulin stability and amyloid aggregation.,Ricagno S, Colombo M, de Rosa M, Sangiovanni E, Giorgetti S, Raimondi S, Bellotti V, Bolognesi M Biochem Biophys Res Commun. 2008 Dec 5;377(1):146-50. Epub 2008 Oct 1. PMID:18835253<ref>PMID:18835253</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3dhm" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_18835253}}, adds the Publication Abstract to the page
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*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 18835253 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_18835253}}
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__TOC__
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</StructureSection>
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==About this Structure==
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3DHM is a 1 chain structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DHM OCA].
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==Reference==
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DE loop mutations affect beta2-microglobulin stability and amyloid aggregation., Ricagno S, Colombo M, de Rosa M, Sangiovanni E, Giorgetti S, Raimondi S, Bellotti V, Bolognesi M, Biochem Biophys Res Commun. 2008 Dec 5;377(1):146-50. Epub 2008 Oct 1. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/18835253 18835253]
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Bellotti, V.]]
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[[Category: Large Structures]]
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[[Category: Bolognesi, M.]]
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[[Category: Bellotti V]]
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[[Category: Colombo, M.]]
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[[Category: Bolognesi M]]
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[[Category: Giorgetti, S.]]
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[[Category: Colombo M]]
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[[Category: Ricagno, S.]]
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[[Category: Giorgetti S]]
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[[Category: Rosa, M de.]]
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[[Category: Ricagno S]]
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[[Category: Amyloidosis]]
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[[Category: De Rosa M]]
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[[Category: Beta fibril]]
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[[Category: Beta-2-microglobulin]]
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[[Category: Disease mutation]]
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[[Category: Dra]]
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[[Category: Glycation]]
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[[Category: Glycoprotein]]
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[[Category: Immune response]]
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[[Category: Immune system]]
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[[Category: Immunoglobulin domain]]
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[[Category: Mhc i]]
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[[Category: Proline]]
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[[Category: Pyrrolidone carboxylic acid]]
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[[Category: Secreted]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Nov 20 07:44:09 2008''
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Current revision

Beta 2 microglobulin mutant D59P

PDB ID 3dhm

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