2e8d - Revision history

OCA at 06:39, 1 May 2024

2024-05-01T06:39:44Z

← Older revision		Revision as of 06:39, 1 May 2024
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	== Function ==		== Function ==
	[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.		[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.
	~~<div style="background-color:#fffaf0;">~~
	~~== Publication Abstract from PubMed ==~~
	Understanding the structure and formation of amyloid fibrils, the filamentous aggregates of proteins and peptides, is crucial in preventing diseases caused by their deposition and, moreover, for obtaining further insight into the mechanism of protein folding and misfolding. We have combined solid-state NMR, x-ray fiber diffraction, and atomic force microscopy to reveal the 3D structure of amyloid protofilament-like fibrils formed by a 22-residue K3 peptide (Ser(20)-Lys(41)) of beta(2)-microglobulin, a protein responsible for dialysis-related amyloidosis. Although a uniformly (13)C,(15)N-labeled sample was used for the NMR measurements, we could obtain the 3D structure of the fibrils on the basis of a large number of structural constraints. The conformation of K3 fibrils was found to be a beta-strand-loop-beta-strand with each K3 molecule stacked in a parallel and staggered manner. It is suggested that the fibrillar conformation is stabilized by intermolecular interactions, rather than by intramolecular hydrophobic packing as seen in globular proteins. Together with thermodynamic studies of the full-length protein, formation of the fibrils is likely to require side chains on the intermolecular surface to pack tightly against those of adjacent monomers. By revealing the structure of beta(2)-microglobulin protofilament-like fibrils, this work represents technical progress in analyzing amyloid fibrils in general through solid-state NMR.

	3D structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR.,Iwata K, Fujiwara T, Matsuki Y, Akutsu H, Takahashi S, Naiki H, Goto Y Proc Natl Acad Sci U S A. 2006 Nov 28;103(48):18119-24. Epub 2006 Nov 15. PMID:17108084<ref>PMID:17108084</ref>

	~~From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>~~
	~~</div>~~
	~~<div class="pdbe-citations 2e8d" style="background-color:#fffaf0;"></div>~~

	==See Also==		==See Also==

OCA at 10:27, 6 September 2023

2023-09-06T10:27:37Z

← Older revision		Revision as of 10:27, 6 September 2023
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	==3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR==		==3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR==
	<StructureSection load='2e8d' size='340' side='right'caption='[[2e8d~~]], [[NMR_Ensembles_of_Models \| 10 NMR models~~]]' scene=''>		<StructureSection load='2e8d' size='340' side='right'caption='[[2e8d]]' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2e8d]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/~~Human Human~~]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2E8D FirstGlance]. <br>		<table><tr><td colspan='2'>[[2e8d]] is a 4 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=2E8D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2E8D FirstGlance]. <br>
	</td></tr><tr id='~~gene~~'><td class="sblockLbl"><b>[[~~Gene~~\|~~Gene~~:]]</b></td><td class="sblockDat"~~>B2M ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&~~id=~~9606 HUMAN])~~</td></tr>		</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models\|Method:]]</b></td><td class="sblockDat" id="methodDat">Solid-state NMR</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=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [https://pdbe.org/2e8d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [https://www.ebi.ac.uk/pdbsum/2e8d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2e8d ProSAT]</span></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=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [https://pdbe.org/2e8d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [https://www.ebi.ac.uk/pdbsum/2e8d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2e8d ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
	[[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>		[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>
	== Function ==		== Function ==
	[[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.		[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.
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
	== Publication Abstract from PubMed ==		== Publication Abstract from PubMed ==
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	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: ~~Human~~]]		[[Category: Homo sapiens]]
	[[Category: Large Structures]]		[[Category: Large Structures]]
	[[Category: Fujiwara, T]]		[[Category: Fujiwara T]]
	~~[[Category: Beta2-microglobulin]]~~
	~~[[Category: Immune system]]~~
	~~[[Category: Protein fibril~~]]

OCA at 07:02, 1 December 2021

2021-12-01T07:02:48Z

← Older revision		Revision as of 07:02, 1 December 2021
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	<StructureSection load='2e8d' size='340' side='right'caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>		<StructureSection load='2e8d' size='340' side='right'caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2e8d]] is a 4 chain structure with sequence from [~~http~~://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8D OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=2E8D FirstGlance]. <br>		<table><tr><td colspan='2'>[[2e8d]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2E8D FirstGlance]. <br>
	</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">B2M ([~~http~~://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>		</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">B2M ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [~~http~~://pdbe.org/2e8d PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/2e8d PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=2e8d ProSAT]</span></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=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [https://pdbe.org/2e8d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [https://www.ebi.ac.uk/pdbsum/2e8d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2e8d ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
	[[~~http~~://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[~~http~~://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>		[[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>
	== Function ==		== Function ==
	[[~~http~~://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.		[[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.
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
	== Publication Abstract from PubMed ==		== Publication Abstract from PubMed ==

OCA at 09:32, 26 February 2020

2020-02-26T09:32:23Z

← Older revision		Revision as of 09:32, 26 February 2020
Line 1:		Line 1:

	==3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR==		==3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR==
	<StructureSection load='2e8d' size='340' side='right' caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>		<StructureSection load='2e8d' size='340' side='right'caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2e8d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8D FirstGlance]. <br>		<table><tr><td colspan='2'>[[2e8d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8D FirstGlance]. <br>
Line 22:		Line 22:

	==See Also==		==See Also==
	*[[Beta-2 microglobulin\|Beta-2 microglobulin]]		*[[Beta-2 microglobulin 3D structures\|Beta-2 microglobulin 3D structures]]
	== References ==		== References ==
	<references/>		<references/>
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	</StructureSection>		</StructureSection>
	[[Category: Human]]		[[Category: Human]]
			[[Category: Large Structures]]
	[[Category: Fujiwara, T]]		[[Category: Fujiwara, T]]
	[[Category: Beta2-microglobulin]]		[[Category: Beta2-microglobulin]]
	[[Category: Immune system]]		[[Category: Immune system]]
	[[Category: Protein fibril]]		[[Category: Protein fibril]]

OCA at 06:58, 6 June 2018

2018-06-06T06:58:18Z

← Older revision		Revision as of 06:58, 6 June 2018
Line 1:		Line 1:

	==3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR==		==3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR==
	<StructureSection load='2e8d' size='340' side='right' caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>		<StructureSection load='2e8d' size='340' side='right' caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>
Line 4:		Line 5:
	<table><tr><td colspan='2'>[[2e8d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8D FirstGlance]. <br>		<table><tr><td colspan='2'>[[2e8d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8D FirstGlance]. <br>
	</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">B2M ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>		</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">B2M ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [http://pdbe.org/2e8d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [http://www.ebi.ac.uk/pdbsum/2e8d PDBsum]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [http://pdbe.org/2e8d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [http://www.ebi.ac.uk/pdbsum/2e8d PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2e8d ProSAT]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==

OCA at 07:04, 11 September 2015

2015-09-11T07:04:03Z

← Older revision		Revision as of 07:04, 11 September 2015
Line 2:		Line 2:
	<StructureSection load='2e8d' size='340' side='right' caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>		<StructureSection load='2e8d' size='340' side='right' caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[2e8d]] is a 4 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=2E8D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8D FirstGlance]. <br>		<table><tr><td colspan='2'>[[2e8d]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2E8D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8D FirstGlance]. <br>
	</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">B2M ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 ~~Homo sapiens~~])</td></tr>		</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">B2M ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [http://www.ebi.ac.uk/pdbsum/2e8d PDBsum]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [http://pdbe.org/2e8d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [http://www.ebi.ac.uk/pdbsum/2e8d PDBsum]</span></td></tr>
	</table>		</table>
	== Disease ==		== Disease ==
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	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
	</div>		</div>
			<div class="pdbe-citations 2e8d" style="background-color:#fffaf0;"></div>

	==See Also==		==See Also==
Line 25:		Line 26:
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: ~~Homo sapiens~~]]		[[Category: Human]]
	[[Category: Fujiwara, T]]		[[Category: Fujiwara, T]]
	[[Category: Beta2-microglobulin]]		[[Category: Beta2-microglobulin]]
	[[Category: Immune system]]		[[Category: Immune system]]
	[[Category: Protein fibril]]		[[Category: Protein fibril]]

OCA at 12:24, 18 December 2014

2014-12-18T12:24:25Z

← Older revision		Revision as of 12:24, 18 December 2014
Line 1:		Line 1:
	~~{{STRUCTURE_2e8d\| PDB=2e8d \| SCENE= }}~~		==3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR==
	===3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR===		<StructureSection load='2e8d' size='340' side='right' caption='[[2e8d]], [[NMR_Ensembles_of_Models \| 10 NMR models]]' scene=''>
	~~{{ABSTRACT_PUBMED_17108084}}~~		== Structural highlights ==
			<table><tr><td colspan='2'>[[2e8d]] is a 4 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=2E8D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2E8D FirstGlance]. <br>
	==Disease==		</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">B2M ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
	[[http://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[http://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>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2e8d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2e8d OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2e8d RCSB], [http://www.ebi.ac.uk/pdbsum/2e8d PDBsum]</span></td></tr>
			</table>
			== Disease ==
			[[http://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[http://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>
			== Function ==
			[[http://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.
			<div style="background-color:#fffaf0;">
			== Publication Abstract from PubMed ==
			Understanding the structure and formation of amyloid fibrils, the filamentous aggregates of proteins and peptides, is crucial in preventing diseases caused by their deposition and, moreover, for obtaining further insight into the mechanism of protein folding and misfolding. We have combined solid-state NMR, x-ray fiber diffraction, and atomic force microscopy to reveal the 3D structure of amyloid protofilament-like fibrils formed by a 22-residue K3 peptide (Ser(20)-Lys(41)) of beta(2)-microglobulin, a protein responsible for dialysis-related amyloidosis. Although a uniformly (13)C,(15)N-labeled sample was used for the NMR measurements, we could obtain the 3D structure of the fibrils on the basis of a large number of structural constraints. The conformation of K3 fibrils was found to be a beta-strand-loop-beta-strand with each K3 molecule stacked in a parallel and staggered manner. It is suggested that the fibrillar conformation is stabilized by intermolecular interactions, rather than by intramolecular hydrophobic packing as seen in globular proteins. Together with thermodynamic studies of the full-length protein, formation of the fibrils is likely to require side chains on the intermolecular surface to pack tightly against those of adjacent monomers. By revealing the structure of beta(2)-microglobulin protofilament-like fibrils, this work represents technical progress in analyzing amyloid fibrils in general through solid-state NMR.

	~~==Function==~~		3D structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR.,Iwata K, Fujiwara T, Matsuki Y, Akutsu H, Takahashi S, Naiki H, Goto Y Proc Natl Acad Sci U S A. 2006 Nov 28;103(48):18119-24. Epub 2006 Nov 15. PMID:17108084<ref>PMID:17108084</ref>
	~~[[http://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~~.

	~~==About this Structure==~~		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
	~~[[2e8d]] is~~ a ~~4 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=2E8D OCA].~~		</div>

	==See Also==		==See Also==
	*[[Beta-2 microglobulin\|Beta-2 microglobulin]]		*[[Beta-2 microglobulin\|Beta-2 microglobulin]]
			== References ==
	==~~Reference~~==		<references/>
	~~<ref group="xtra">PMID:017108084</ref>~~<references ~~group="xtra"~~/><~~references~~/>		__TOC__
			</StructureSection>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Fujiwara, T.]]		[[Category: Fujiwara, T]]
	[[Category: Beta2-microglobulin]]		[[Category: Beta2-microglobulin]]
	[[Category: Immune system]]		[[Category: Immune system]]
	[[Category: Protein fibril]]		[[Category: Protein fibril]]

OCA at 02:40, 25 March 2013

2013-03-25T02:40:10Z

← Older revision		Revision as of 02:40, 25 March 2013
Line 1:		Line 1:
	~~[[Image:2e8d.png\|left\|200px]]~~

	{{STRUCTURE_2e8d\| PDB=2e8d \| SCENE= }}		{{STRUCTURE_2e8d\| PDB=2e8d \| SCENE= }}
			===3D Structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR===
			{{ABSTRACT_PUBMED_17108084}}

	===~~3D Structure~~ of amyloid ~~protofilaments of beta2~~-microglobulin ~~fragment probed by solid~~-~~state NMR===~~		==Disease==
			[[http://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[http://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>

	~~{{ABSTRACT_PUBMED_17108084}}~~		==Function==
			[[http://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.

	==About this Structure==		==About this Structure==
Line 14:		Line 16:

	==Reference==		==Reference==
	<ref group="xtra">PMID:017108084</ref><references group="xtra"/>		<ref group="xtra">PMID:017108084</ref><references group="xtra"/><references/>
	[[Category: Homo sapiens]]		[[Category: Homo sapiens]]
	[[Category: Fujiwara, T.]]		[[Category: Fujiwara, T.]]

OCA at 16:57, 20 October 2012

2012-10-20T16:57:32Z

← Older revision		Revision as of 16:57, 20 October 2012
Line 8:		Line 8:

	==About this Structure==		==About this Structure==
	[[2e8d]] is a 4 chain structure ~~of [[Beta-2 microglobulin]]~~ 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=2E8D OCA].		[[2e8d]] is a 4 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=2E8D OCA].

	==See Also==		==See Also==

OCA: Protected "2e8d" [edit=sysop:move=sysop]

2012-07-26T23:22:16Z

Protected "2e8d" [edit=sysop:move=sysop]

← Older revision	Revision as of 23:22, 26 July 2012
(No difference)