4rd9

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==X-RAY STRUCTURE OF THE APO FORM OF THE AMYLOID PRECURSOR PROTEIN-LIKE PROTEIN 1 (APLP1) E2 DOMAIN==
==X-RAY STRUCTURE OF THE APO FORM OF THE AMYLOID PRECURSOR PROTEIN-LIKE PROTEIN 1 (APLP1) E2 DOMAIN==
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<StructureSection load='4rd9' size='340' side='right' caption='[[4rd9]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
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<StructureSection load='4rd9' size='340' side='right'caption='[[4rd9]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4rd9]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RD9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4RD9 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4rd9]] 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=4RD9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4RD9 FirstGlance]. <br>
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</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=4rd9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rd9 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4rd9 RCSB], [http://www.ebi.ac.uk/pdbsum/4rd9 PDBsum]</span></td></tr>
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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]] 2.6&#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=4rd9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rd9 OCA], [https://pdbe.org/4rd9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4rd9 RCSB], [https://www.ebi.ac.uk/pdbsum/4rd9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4rd9 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/APLP1_HUMAN APLP1_HUMAN]] May play a role in postsynaptic function. The C-terminal gamma-secretase processed fragment, ALID1, activates transcription activation through APBB1 (Fe65) binding (By similarity). Couples to JIP signal transduction through C-terminal binding. May interact with cellular G-protein signaling pathways. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I. The gamma-CTF peptide, C30, is a potent enhancer of neuronal apoptosis.
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[https://www.uniprot.org/uniprot/APLP1_HUMAN APLP1_HUMAN] May play a role in postsynaptic function. The C-terminal gamma-secretase processed fragment, ALID1, activates transcription activation through APBB1 (Fe65) binding (By similarity). Couples to JIP signal transduction through C-terminal binding. May interact with cellular G-protein signaling pathways. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I. The gamma-CTF peptide, C30, is a potent enhancer of neuronal apoptosis.
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Beyond the pathology of Alzheimer's disease, the members of the amyloid precursor protein (APP) family are essential for neuronal development and cell homeostasis in mammals. APP and its paralogues APP-like protein 1 (APLP1) and APP-like protein 2 (APLP2) contain the highly conserved heparan sulfate (HS) binding domain E2, which effects various (patho)physiological functions. Here, two crystal structures of the E2 domain of APLP1 are presented in the apo form and in complex with a heparin dodecasaccharide at 2.5 A resolution. The apo structure of APLP1 E2 revealed an unfolded and hence flexible N-terminal helix alphaA. The (APLP1 E2)2-(heparin)2 complex structure revealed two distinct binding modes, with APLP1 E2 explicitly recognizing the heparin terminus but also interacting with a continuous heparin chain. The latter only requires a certain register of the sugar moieties that fits to a positively charged surface patch and contributes to the general heparin-binding capability of APP-family proteins. Terminal binding of APLP1 E2 to heparin specifically involves a structure of the nonreducing end that is very similar to heparanase-processed HS chains. These data reveal a conserved mechanism for the binding of APP-family proteins to HS and imply a specific regulatory role of HS modifications in the biology of APP and APP-like proteins.
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Interaction of the amyloid precursor protein-like protein 1 (APLP1) E2 domain with heparan sulfate involves two distinct binding modes.,Dahms SO, Mayer MC, Roeser D, Multhaup G, Than ME Acta Crystallogr D Biol Crystallogr. 2015 Mar 1;71(Pt 3):494-504. doi:, 10.1107/S1399004714027114. Epub 2015 Feb 26. PMID:25760599<ref>PMID:25760599</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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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Dahms, S O]]
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[[Category: Homo sapiens]]
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[[Category: Than, M E]]
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[[Category: Large Structures]]
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[[Category: Heparin binding]]
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[[Category: Dahms SO]]
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[[Category: Sugar binding protein]]
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[[Category: Than ME]]

Current revision

X-RAY STRUCTURE OF THE APO FORM OF THE AMYLOID PRECURSOR PROTEIN-LIKE PROTEIN 1 (APLP1) E2 DOMAIN

PDB ID 4rd9

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