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6bf9

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Revision as of 23:21, 10 April 2020

Cryo-EM structure of human insulin degrading enzyme in complex with FAB H11-E heavy chain, FAB H11-E light chain

6bf9, resolution 7.20Å

Structural highlights

6bf9 is a 6 chain structure with sequence from Human and Lk3 transgenic mice. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	6b70, 6b3q, 6b7y, 6b7z, 6bf6, 6bf7, 6bf8
Gene:	IDE (HUMAN)
Activity:	Insulysin, with EC number 3.4.24.56
Experimental data:	Check to display Experimental Data
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[IDE_HUMAN] Plays a role in the cellular breakdown of insulin, IAPP, glucagon, bradykinin, kallidin and other peptides, and thereby plays a role in intercellular peptide signaling. Degrades amyloid formed by APP and IAPP. May play a role in the degradation and clearance of naturally secreted amyloid beta-protein by neurons and microglia.^[1] ^[2] ^[3]

Publication Abstract from PubMed

Insulin degrading enzyme (IDE) plays key roles in degrading peptides vital in type 2 diabetes, Alzheimer's, inflammation, and other human diseases. However, the process through which IDE recognizes peptides that tend to form amyloid fibrils remained unsolved. We used cryoEM to understand both the apo- and insulin-bound dimeric IDE states, revealing that IDE displays a large opening between the homologous ~55 kDa N- and C-terminal halves to allow selective substrate capture based on size and charge complementarity. We also used cryoEM, X-ray crystallography, SAXS, and HDX-MS to elucidate the molecular basis of how amyloidogenic peptides stabilize the disordered IDE catalytic cleft, thereby inducing selective degradation by substrate-assisted catalysis. Furthermore, our insulin-bound IDE structures explain how IDE processively degrades insulin by stochastically cutting either chain without breaking disulfide bonds. Together, our studies provide a mechanism for how IDE selectively degrades amyloidogenic peptides and offers structural insights for developing IDE-based therapies.

Ensemble cryoEM elucidates the mechanism of insulin capture and degradation by human insulin degrading enzyme.,Zhang Z, Liang WG, Bailey LJ, Tan YZ, Wei H, Wang A, Farcasanu M, Woods VA, McCord LA, Lee D, Shang W, Deprez-Poulain R, Deprez B, Liu DR, Koide A, Koide S, Kossiakoff AA, Li S, Carragher B, Potter CS, Tang WJ Elife. 2018 Mar 29;7. pii: 33572. doi: 10.7554/eLife.33572. PMID:29596046^[4]

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

References

↑ Vekrellis K, Ye Z, Qiu WQ, Walsh D, Hartley D, Chesneau V, Rosner MR, Selkoe DJ. Neurons regulate extracellular levels of amyloid beta-protein via proteolysis by insulin-degrading enzyme. J Neurosci. 2000 Mar 1;20(5):1657-65. PMID:10684867
↑ Im H, Manolopoulou M, Malito E, Shen Y, Zhao J, Neant-Fery M, Sun CY, Meredith SC, Sisodia SS, Leissring MA, Tang WJ. Structure of substrate-free human insulin-degrading enzyme (IDE) and biophysical analysis of ATP-induced conformational switch of IDE. J Biol Chem. 2007 Aug 31;282(35):25453-63. Epub 2007 Jul 5. PMID:17613531 doi:10.1074/jbc.M701590200
↑ Malito E, Ralat LA, Manolopoulou M, Tsay JL, Wadlington NL, Tang WJ. Molecular Bases for the Recognition of Short Peptide Substrates and Cysteine-Directed Modifications of Human Insulin-Degrading Enzyme. Biochemistry. 2008 Nov 6. PMID:18986166 doi:10.1021/bi801192h
↑ Zhang Z, Liang WG, Bailey LJ, Tan YZ, Wei H, Wang A, Farcasanu M, Woods VA, McCord LA, Lee D, Shang W, Deprez-Poulain R, Deprez B, Liu DR, Koide A, Koide S, Kossiakoff AA, Li S, Carragher B, Potter CS, Tang WJ. Ensemble cryoEM elucidates the mechanism of insulin capture and degradation by human insulin degrading enzyme. Elife. 2018 Mar 29;7. pii: 33572. doi: 10.7554/eLife.33572. PMID:29596046 doi:http://dx.doi.org/10.7554/eLife.33572

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6bf9"

@@ Line 3: / Line 3: @@
 <SX load='6bf9' size='340' side='right' viewer='molstar' caption='[[6bf9]], [[Resolution|resolution]] 7.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6bf9]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human] and [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6BF9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6BF9 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6bf9]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human] and [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6BF9 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6BF9 FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[6b70|6b70]], [[6b3q|6b3q]], [[6b7y|6b7y]], [[6b7z|6b7z]], [[6bf6|6bf6]], [[6bf7|6bf7]], [[6bf8|6bf8]]</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 HUMAN])</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=6bf9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6bf9 OCA], [http://pdbe.org/6bf9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6bf9 RCSB], [http://www.ebi.ac.uk/pdbsum/6bf9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6bf9 ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6bf9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6bf9 OCA], [http://pdbe.org/6bf9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6bf9 RCSB], [http://www.ebi.ac.uk/pdbsum/6bf9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6bf9 ProSAT]</span></td></tr>
 </table>
 == Function ==

6bf9

From Proteopedia

Revision as of 23:21, 10 April 2020

Cryo-EM structure of human insulin degrading enzyme in complex with FAB H11-E heavy chain, FAB H11-E light chain

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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