View source for 4ahh


==R31K - Angiogenin mutants and amyotrophic lateral sclerosis - a biochemical and biological analysis==
<StructureSection load='4ahh' size='340' side='right'caption='[[4ahh]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4ahh]] is a 1 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=4AHH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4AHH FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.498&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=TLA:L(+)-TARTARIC+ACID'>TLA</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=4ahh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ahh OCA], [https://pdbe.org/4ahh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ahh RCSB], [https://www.ebi.ac.uk/pdbsum/4ahh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ahh ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/ANGI_HUMAN ANGI_HUMAN] Defects in ANG are the cause of susceptibility to amyotrophic lateral sclerosis type 9 (ALS9) [MIM:[https://omim.org/entry/611895 611895]. ALS is a degenerative disorder of motor neurons in the cortex, brain stem and spinal cord. ALS is characterized by muscular weakness and atrophy.<ref>PMID:17886298</ref> <ref>PMID:15557516</ref> <ref>PMID:16501576</ref> <ref>PMID:17900154</ref> <ref>PMID:18087731</ref> <ref>PMID:17703939</ref> 
== Function ==
[https://www.uniprot.org/uniprot/ANGI_HUMAN ANGI_HUMAN] May function as a tRNA-specific ribonuclease that abolishes protein synthesis by specifically hydrolyzing cellular tRNAs. Binds to actin on the surface of endothelial cells; once bound, angiogenin is endocytosed and translocated to the nucleus. Angiogenin induces vascularization of normal and malignant tissues. Angiogenic activity is regulated by interaction with RNH1 in vivo.<ref>PMID:1400510</ref> <ref>PMID:19354288</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Mutations in angiogenin (ANG), a member of the ribonuclease A superfamily, are associated with amyotrophic lateral sclerosis (ALS; sporadic and familial) and Parkinson's disease. We have previously shown that ANG is expressed in neurons during neuro-ectodermal differentiation, and that it has both neurotrophic and neuroprotective functions. Here we report the atomic resolution structure of native ANG and 11 ANG-ALS variants. We correlate the structural changes to the effects on neuronal survival and the ability to induce stress granules in neuronal cell lines. ANG-ALS variants that affect the structure of the catalytic site and either decrease or increase the RNase activity affect neuronal survival. Neuronal cell lines expressing the ANG-ALS variants also lack the ability to form stress granules. Our structure-function studies on these ANG-ALS variants are the first to provide insights into the cellular and molecular mechanisms underlying their role in ALS.

Structural and molecular insights into the mechanism of action of human angiogenin-ALS variants in neurons.,Thiyagarajan N, Ferguson R, Subramanian V, Acharya KR Nat Commun. 2012 Oct 9;3:1121. doi: 10.1038/ncomms2126. PMID:23047679<ref>PMID:23047679</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4ahh" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ribonuclease 3D structures|Ribonuclease 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Acharya KR]]
[[Category: Ferguson R]]
[[Category: Pham T]]
[[Category: Saha S]]
[[Category: Subramanian V]]
[[Category: Thiyagarajan N]]