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==Crystal structure of the Angiotensin-1 converting enzyme N-domain in complex with amyloid-beta 35-42==
==Crystal structure of the Angiotensin-1 converting enzyme N-domain in complex with amyloid-beta 35-42==
<StructureSection load='5amb' size='340' side='right' caption='[[5amb]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
<StructureSection load='5amb' size='340' side='right'caption='[[5amb]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[5amb]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5AMB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5AMB FirstGlance]. <br>
<table><tr><td colspan='2'>[[5amb]] is a 4 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=5AMB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5AMB FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=P6G:HEXAETHYLENE+GLYCOL'>P6G</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</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]] 1.55&#8491;</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Peptidyl-dipeptidase_A Peptidyl-dipeptidase A], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.15.1 3.4.15.1] </span></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=P6G:HEXAETHYLENE+GLYCOL'>P6G</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=5amb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5amb OCA], [http://pdbe.org/5amb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5amb RCSB], [http://www.ebi.ac.uk/pdbsum/5amb PDBsum]</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=5amb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5amb OCA], [https://pdbe.org/5amb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5amb RCSB], [https://www.ebi.ac.uk/pdbsum/5amb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5amb ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
== Disease ==
[[http://www.uniprot.org/uniprot/ACE_HUMAN ACE_HUMAN]] Genetic variations in ACE may be a cause of susceptibility to ischemic stroke (ISCHSTR) [MIM:[http://omim.org/entry/601367 601367]]; also known as cerebrovascular accident or cerebral infarction. A stroke is an acute neurologic event leading to death of neural tissue of the brain and resulting in loss of motor, sensory and/or cognitive function. Ischemic strokes, resulting from vascular occlusion, is considered to be a highly complex disease consisting of a group of heterogeneous disorders with multiple genetic and environmental risk factors.<ref>PMID:15534175</ref>  Defects in ACE are a cause of renal tubular dysgenesis (RTD) [MIM:[http://omim.org/entry/267430 267430]]. RTD is an autosomal recessive severe disorder of renal tubular development characterized by persistent fetal anuria and perinatal death, probably due to pulmonary hypoplasia from early-onset oligohydramnios (the Potter phenotype).<ref>PMID:16116425</ref>  Genetic variations in ACE are associated with susceptibility to microvascular complications of diabetes type 3 (MVCD3) [MIM:[http://omim.org/entry/612624 612624]]. These are pathological conditions that develop in numerous tissues and organs as a consequence of diabetes mellitus. They include diabetic retinopathy, diabetic nephropathy leading to end-stage renal disease, and diabetic neuropathy. Diabetic retinopathy remains the major cause of new-onset blindness among diabetic adults. It is characterized by vascular permeability and increased tissue ischemia and angiogenesis.  Defects in ACE are a cause of susceptibility to intracerebral hemorrhage (ICH) [MIM:[http://omim.org/entry/614519 614519]]. A pathological condition characterized by bleeding into one or both cerebral hemispheres including the basal ganglia and the cerebral cortex. It is often associated with hypertension and craniocerebral trauma. Intracerebral bleeding is a common cause of stroke.<ref>PMID:15277638</ref> [[http://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Defects in APP are the cause of Alzheimer disease type 1 (AD1) [MIM:[http://omim.org/entry/104300 104300]]. AD1 is a familial early-onset form of Alzheimer disease. It can be associated with cerebral amyloid angiopathy. Alzheimer disease is a neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death.<ref>PMID:8476439</ref> <ref>PMID:15201367</ref> <ref>PMID:1671712</ref> <ref>PMID:1908231</ref> <ref>PMID:1678058</ref> <ref>PMID:1944558</ref> <ref>PMID:1925564</ref> <ref>PMID:1415269</ref> <ref>PMID:1303239</ref> <ref>PMID:1302033</ref> <ref>PMID:1303275</ref> <ref>PMID:8267572</ref> <ref>PMID:8290042</ref> <ref>PMID:8577393</ref> <ref>PMID:9328472</ref> <ref>PMID:9754958</ref> <ref>PMID:10097173</ref> <ref>PMID:10631141</ref> <ref>PMID:10665499</ref> <ref>PMID:10867787</ref> <ref>PMID:11063718</ref> <ref>PMID:11311152</ref> <ref>PMID:11528419</ref> <ref>PMID:12034808</ref> <ref>PMID:15365148</ref> <ref>PMID:15668448</ref>  Defects in APP are the cause of cerebral amyloid angiopathy APP-related (CAA-APP) [MIM:[http://omim.org/entry/605714 605714]]. A hereditary localized amyloidosis due to amyloid-beta A4 peptide(s) deposition in the cerebral vessels. The principal clinical characteristics are recurrent cerebral and cerebellar hemorrhages, recurrent strokes, cerebral ischemia, cerebral infarction, and progressive mental deterioration. Patients develop cerebral hemorrhage because of the severe cerebral amyloid angiopathy. Parenchymal amyloid deposits are rare and largely in the form of pre-amyloid lesions or diffuse plaque-like structures. They are Congo red negative and lack the dense amyloid cores commonly present in Alzheimer disease. Some affected individuals manifest progressive aphasic dementia, leukoencephalopathy, and occipital calcifications.<ref>PMID:10821838</ref> <ref>PMID:2111584</ref> <ref>PMID:11409420</ref> <ref>PMID:12654973</ref> <ref>PMID:16178030</ref> 
[https://www.uniprot.org/uniprot/ACE_HUMAN ACE_HUMAN] Genetic variations in ACE may be a cause of susceptibility to ischemic stroke (ISCHSTR) [MIM:[https://omim.org/entry/601367 601367]; also known as cerebrovascular accident or cerebral infarction. A stroke is an acute neurologic event leading to death of neural tissue of the brain and resulting in loss of motor, sensory and/or cognitive function. Ischemic strokes, resulting from vascular occlusion, is considered to be a highly complex disease consisting of a group of heterogeneous disorders with multiple genetic and environmental risk factors.<ref>PMID:15534175</ref>  Defects in ACE are a cause of renal tubular dysgenesis (RTD) [MIM:[https://omim.org/entry/267430 267430]. RTD is an autosomal recessive severe disorder of renal tubular development characterized by persistent fetal anuria and perinatal death, probably due to pulmonary hypoplasia from early-onset oligohydramnios (the Potter phenotype).<ref>PMID:16116425</ref>  Genetic variations in ACE are associated with susceptibility to microvascular complications of diabetes type 3 (MVCD3) [MIM:[https://omim.org/entry/612624 612624]. These are pathological conditions that develop in numerous tissues and organs as a consequence of diabetes mellitus. They include diabetic retinopathy, diabetic nephropathy leading to end-stage renal disease, and diabetic neuropathy. Diabetic retinopathy remains the major cause of new-onset blindness among diabetic adults. It is characterized by vascular permeability and increased tissue ischemia and angiogenesis.  Defects in ACE are a cause of susceptibility to intracerebral hemorrhage (ICH) [MIM:[https://omim.org/entry/614519 614519]. A pathological condition characterized by bleeding into one or both cerebral hemispheres including the basal ganglia and the cerebral cortex. It is often associated with hypertension and craniocerebral trauma. Intracerebral bleeding is a common cause of stroke.<ref>PMID:15277638</ref>  
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/ACE_HUMAN ACE_HUMAN]] Converts angiotensin I to angiotensin II by release of the terminal His-Leu, this results in an increase of the vasoconstrictor activity of angiotensin. Also able to inactivate bradykinin, a potent vasodilator. Has also a glycosidase activity which releases GPI-anchored proteins from the membrane by cleaving the mannose linkage in the GPI moiety. [[http://www.uniprot.org/uniprot/A4_HUMAN A4_HUMAN]] Functions as a cell surface receptor and performs physiological functions on the surface of neurons relevant to neurite growth, neuronal adhesion and axonogenesis. Involved in cell mobility and transcription regulation through protein-protein interactions. Can promote transcription activation through binding to APBB1-KAT5 and inhibits Notch signaling through interaction with Numb. Couples to apoptosis-inducing pathways such as those mediated by G(O) and JIP. Inhibits G(o) alpha ATPase activity (By similarity). Acts as a kinesin I membrane receptor, mediating the axonal transport of beta-secretase and presenilin 1. Involved in copper homeostasis/oxidative stress through copper ion reduction. In vitro, copper-metallated APP induces neuronal death directly or is potentiated through Cu(2+)-mediated low-density lipoprotein oxidation. Can regulate neurite outgrowth through binding to components of the extracellular matrix such as heparin and collagen I and IV. The splice isoforms that contain the BPTI domain possess protease inhibitor activity. Induces a AGER-dependent pathway that involves activation of p38 MAPK, resulting in internalization of amyloid-beta peptide and leading to mitochondrial dysfunction in cultured cortical neurons. Provides Cu(2+) ions for GPC1 which are required for release of nitric oxide (NO) and subsequent degradation of the heparan sulfate chains on GPC1.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>  Beta-amyloid peptides are lipophilic metal chelators with metal-reducing activity. Bind transient metals such as copper, zinc and iron. In vitro, can reduce Cu(2+) and Fe(3+) to Cu(+) and Fe(2+), respectively. Beta-amyloid 42 is a more effective reductant than beta-amyloid 40. Beta-amyloid peptides bind to lipoproteins and apolipoproteins E and J in the CSF and to HDL particles in plasma, inhibiting metal-catalyzed oxidation of lipoproteins. Beta-APP42 may activate mononuclear phagocytes in the brain and elicit inflammatory responses. Promotes both tau aggregation and TPK II-mediated phosphorylation. Interaction with Also bind GPC1 in lipid rafts.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>  Appicans elicit adhesion of neural cells to the extracellular matrix and may regulate neurite outgrowth in the brain (By similarity).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>  The gamma-CTF peptides as well as the caspase-cleaved peptides, including C31, are potent enhancers of neuronal apoptosis.<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref>  N-APP binds TNFRSF21 triggering caspase activation and degeneration of both neuronal cell bodies (via caspase-3) and axons (via caspase-6).<ref>PMID:9168929</ref> <ref>PMID:11544248</ref> <ref>PMID:11943163</ref> <ref>PMID:19225519</ref> <ref>PMID:19901339</ref> 
[https://www.uniprot.org/uniprot/ACE_HUMAN ACE_HUMAN] Converts angiotensin I to angiotensin II by release of the terminal His-Leu, this results in an increase of the vasoconstrictor activity of angiotensin. Also able to inactivate bradykinin, a potent vasodilator. Has also a glycosidase activity which releases GPI-anchored proteins from the membrane by cleaving the mannose linkage in the GPI moiety.
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== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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</div>
<div class="pdbe-citations 5amb" style="background-color:#fffaf0;"></div>
<div class="pdbe-citations 5amb" style="background-color:#fffaf0;"></div>
==See Also==
*[[Amyloid precursor protein 3D structures|Amyloid precursor protein 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Peptidyl-dipeptidase A]]
[[Category: Homo sapiens]]
[[Category: Acharya, K R]]
[[Category: Large Structures]]
[[Category: Douglas, R G]]
[[Category: Acharya KR]]
[[Category: Larmuth, K M]]
[[Category: Douglas RG]]
[[Category: Masuyer, G]]
[[Category: Larmuth KM]]
[[Category: Sturrock, E D]]
[[Category: Masuyer G]]
[[Category: Amyloid-beta]]
[[Category: Sturrock ED]]
[[Category: Angiotensin-converting enzyme]]
[[Category: Hydrolase]]
[[Category: Metalloprotease]]

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