3e4z

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
{{STRUCTURE_3e4z| PDB=3e4z | SCENE= }}
+
==Crystal structure of human insulin degrading enzyme in complex with insulin-like growth factor II==
-
===Crystal structure of human insulin degrading enzyme in complex with insulin-like growth factor II===
+
<StructureSection load='3e4z' size='340' side='right' caption='[[3e4z]], [[Resolution|resolution]] 2.28&Aring;' scene=''>
-
{{ABSTRACT_PUBMED_19896952}}
+
== Structural highlights ==
 +
<table><tr><td colspan='2'>[[3e4z]] is a 4 chain structure with 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=3E4Z OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3E4Z FirstGlance]. <br>
 +
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
 +
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3e50|3e50]]</td></tr>
 +
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">IDE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), IGF2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
 +
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Insulysin Insulysin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.24.56 3.4.24.56] </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=3e4z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3e4z OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3e4z RCSB], [http://www.ebi.ac.uk/pdbsum/3e4z PDBsum]</span></td></tr>
 +
</table>
 +
== Disease ==
 +
[[http://www.uniprot.org/uniprot/IGF2_HUMAN IGF2_HUMAN]] Epigenetic changes of DNA hypomethylation in IGF2 are a cause of Silver-Russell syndrome (SRS) [MIM:[http://omim.org/entry/180860 180860]]. A clinically heterogeneous condition characterized by severe intrauterine growth retardation, poor postnatal growth, craniofacial features such as a triangular shaped face and a broad forehead, body asymmetry, and a variety of minor malformations. The phenotypic expression changes during childhood and adolescence, with the facial features and asymmetry usually becoming more subtle with age.<ref>PMID:19066168</ref>
 +
== Function ==
 +
[[http://www.uniprot.org/uniprot/IGF2_HUMAN IGF2_HUMAN]] The insulin-like growth factors possess growth-promoting activity. In vitro, they are potent mitogens for cultured cells. IGF-II is influenced by placental lactogen and may play a role in fetal development.<ref>PMID:16912056</ref> Preptin undergoes glucose-mediated co-secretion with insulin, and acts as physiological amplifier of glucose-mediated insulin secretion. Exhibits osteogenic properties by increasing osteoblast mitogenic activity through phosphoactivation of MAPK1 and MAPK3.<ref>PMID:16912056</ref>
 +
== Evolutionary Conservation ==
 +
[[Image:Consurf_key_small.gif|200px|right]]
 +
Check<jmol>
 +
<jmolCheckbox>
 +
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/e4/3e4z_consurf.spt"</scriptWhenChecked>
 +
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
 +
<text>to colour the structure by Evolutionary Conservation</text>
 +
</jmolCheckbox>
 +
</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/chain_selection.php?pdb_ID=2ata ConSurf].
 +
<div style="clear:both"></div>
 +
<div style="background-color:#fffaf0;">
 +
== Publication Abstract from PubMed ==
 +
Insulin-degrading enzyme (IDE) is involved in the clearance of many bioactive peptide substrates, including insulin and amyloid-beta, peptides vital to the development of diabetes and Alzheimer's disease, respectively. IDE can also rapidly degrade hormones that are held together by intramolecular disulfide bond(s) without their reduction. Furthermore, IDE exhibits a remarkable ability to preferentially degrade structurally similar peptides such as the selective degradation of insulin-like growth factor (IGF)-II and transforming growth factor-alpha (TGF-alpha) over IGF-I and epidermal growth factor, respectively. Here, we used high-accuracy mass spectrometry to identify the cleavage sites of human IGF-II, TGF-alpha, amylin, reduced amylin, and amyloid-beta by human IDE. We also determined the structures of human IDE-IGF-II and IDE-TGF-alpha at 2.3 A and IDE-amylin at 2.9 A. We found that IDE cleaves its substrates at multiple sites in a biased stochastic manner. Furthermore, the presence of a disulfide bond in amylin allows IDE to cut at an additional site in the middle of the peptide (amino acids 18-19). Our amylin-bound IDE structure offers insight into how the structural constraint from a disulfide bond in amylin can alter IDE cleavage sites. Together with NMR structures of amylin and the IGF and epidermal growth factor families, our work also reveals the structural basis of how the high dipole moment of substrates complements the charge distribution of the IDE catalytic chamber for the substrate selectivity. In addition, we show how the ability of substrates to properly anchor their N-terminus to the exosite of IDE and undergo a conformational switch upon binding to the catalytic chamber of IDE can also contribute to the selective degradation of structurally related growth factors.
-
==Disease==
+
Molecular basis for the recognition and cleavages of IGF-II, TGF-alpha, and amylin by human insulin-degrading enzyme.,Guo Q, Manolopoulou M, Bian Y, Schilling AB, Tang WJ J Mol Biol. 2010 Jan 15;395(2):430-43. Epub 2009 Nov 5. PMID:19896952<ref>PMID:19896952</ref>
-
[[http://www.uniprot.org/uniprot/IGF2_HUMAN IGF2_HUMAN]] Epigenetic changes of DNA hypomethylation in IGF2 are a cause of Silver-Russell syndrome (SRS) [MIM:[http://omim.org/entry/180860 180860]]. A clinically heterogeneous condition characterized by severe intrauterine growth retardation, poor postnatal growth, craniofacial features such as a triangular shaped face and a broad forehead, body asymmetry, and a variety of minor malformations. The phenotypic expression changes during childhood and adolescence, with the facial features and asymmetry usually becoming more subtle with age.<ref>PMID:19066168</ref>
+
-
==Function==
+
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-
[[http://www.uniprot.org/uniprot/IGF2_HUMAN IGF2_HUMAN]] The insulin-like growth factors possess growth-promoting activity. In vitro, they are potent mitogens for cultured cells. IGF-II is influenced by placental lactogen and may play a role in fetal development.<ref>PMID:16912056</ref> Preptin undergoes glucose-mediated co-secretion with insulin, and acts as physiological amplifier of glucose-mediated insulin secretion. Exhibits osteogenic properties by increasing osteoblast mitogenic activity through phosphoactivation of MAPK1 and MAPK3.<ref>PMID:16912056</ref>
+
</div>
-
 
+
-
==About this Structure==
+
-
[[3e4z]] is a 4 chain structure with 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=3E4Z OCA].
+
==See Also==
==See Also==
*[[Insulin-Degrading Enzyme|Insulin-Degrading Enzyme]]
*[[Insulin-Degrading Enzyme|Insulin-Degrading Enzyme]]
*[[Insulin-like growth factor|Insulin-like growth factor]]
*[[Insulin-like growth factor|Insulin-like growth factor]]
-
 
+
== References ==
-
==Reference==
+
<references/>
-
<ref group="xtra">PMID:019896952</ref><references group="xtra"/><references/>
+
__TOC__
 +
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Insulysin]]
[[Category: Insulysin]]
-
[[Category: Guo, Q.]]
+
[[Category: Guo, Q]]
-
[[Category: Manolopoulou, M.]]
+
[[Category: Manolopoulou, M]]
-
[[Category: Tang, W J.]]
+
[[Category: Tang, W J]]
[[Category: Complex]]
[[Category: Complex]]
[[Category: Degrading]]
[[Category: Degrading]]

Revision as of 13:41, 18 December 2014

Crystal structure of human insulin degrading enzyme in complex with insulin-like growth factor II

3e4z, resolution 2.28Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3e4z"
Personal tools