4lp4

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of the human RAGE VC1 fragment in space group P62

Structural highlights

4lp4 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.4Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RAGE_HUMAN Mediates interactions of advanced glycosylation end products (AGE). These are nonenzymatically glycosylated proteins which accumulate in vascular tissue in aging and at an accelerated rate in diabetes. Acts as a mediator of both acute and chronic vascular inflammation in conditions such as atherosclerosis and in particular as a complication of diabetes. AGE/RAGE signaling plays an important role in regulating the production/expression of TNF-alpha, oxidative stress, and endothelial dysfunction in type 2 diabetes. Interaction with S100A12 on endothelium, mononuclear phagocytes, and lymphocytes triggers cellular activation, with generation of key proinflammatory mediators. Interaction with S100B after myocardial infarction may play a role in myocyte apoptosis by activating ERK1/2 and p53/TP53 signaling (By similarity). Receptor for amyloid beta peptide. Contributes to the translocation of amyloid-beta peptide (ABPP) across the cell membrane from the extracellular to the intracellular space in cortical neurons. ABPP-initiated RAGE signaling, especially stimulation of p38 mitogen-activated protein kinase (MAPK), has the capacity to drive a transport system delivering ABPP as a complex with RAGE to the intraneuronal space.^[1]

Publication Abstract from PubMed

The receptor for advanced glycation end-products (RAGE) is a pattern recognition receptor sensing endogenous stress signals associated with the development of various diseases, including diabetes, vascular complications, Alzheimer's disease and cancer. RAGE ligands include advanced glycation end-products, S100 proteins, high mobility group box 1 protein and amyloid beta-peptides/fibrils. Their signalling through RAGE induces a sustained inflammation that accentuates tissue damage, thereby participating in disease progression. Receptor oligomerization appears to be a crucial parameter for the formation of active signalling complexes, although the precise mode of oligomerization remains unclear in the context of these various ligands. In the present study, we report the first crystal structure of the VC1C2 fragment of the RAGE ectodomain. This structure provides the first description of the C2 domain in the context of the entire ectodomain and supports the observation of its conformational freedom relative to the rigid VC1 domain tandem. In addition, we have obtained a new crystal structure of the RAGE VC1 fragment. The packing in both crystal structures reveals an association of the RAGE molecules through contacts between two V domains and the physiological relevance of this homodimerization mode is discussed. Based on homology with single-pass transmembrane receptors, we also suggest RAGE dimerization through a conserved GxxxG motif within its transmembrane domain. A multimodal homodimerization strategy of RAGE is proposed to form the structural basis for ligand-specific complex formation and signalling functions, as well as for RAGE-mediated cell adhesion. STRUCTURED DIGITAL ABSTRACT: hRAGE_VC1C2 and hRAGE_VC1C2 bind by x-ray crystallography (View interaction) hRAGE_VC1 and hRAGE_VC1 bind by x-ray crystallography (View interaction).

Structural insights into the oligomerization mode of the human receptor for advanced glycation end-products.,Yatime L, Andersen GR FEBS J. 2013 Oct 4. doi: 10.1111/febs.12556. PMID:24119142^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Fang F, Lue LF, Yan S, Xu H, Luddy JS, Chen D, Walker DG, Stern DM, Yan S, Schmidt AM, Chen JX, Yan SS. RAGE-dependent signaling in microglia contributes to neuroinflammation, Abeta accumulation, and impaired learning/memory in a mouse model of Alzheimer's disease. FASEB J. 2010 Apr;24(4):1043-55. doi: 10.1096/fj.09-139634. Epub 2009 Nov 11. PMID:19906677 doi:10.1096/fj.09-139634
↑ Yatime L, Andersen GR. Structural insights into the oligomerization mode of the human receptor for advanced glycation end-products. FEBS J. 2013 Oct 4. doi: 10.1111/febs.12556. PMID:24119142 doi:http://dx.doi.org/10.1111/febs.12556

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4lp4"

Categories: Homo sapiens | Large Structures | Andersen GR | Yatime L

@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4lp4]] is a 2 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=4LP4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4LP4 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene></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=4lp4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4lp4 OCA], [https://pdbe.org/4lp4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4lp4 RCSB], [https://www.ebi.ac.uk/pdbsum/4lp4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4lp4 ProSAT]</span></td></tr>
 </table>

4lp4

From Proteopedia

Current revision

Crystal structure of the human RAGE VC1 fragment in space group P62

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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