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==K40I - Angiogenin mutants and amyotrophic lateral sclerosis - a biochemical and biological analysis== | |||
<StructureSection load='4ahi' size='340' side='right' caption='[[4ahi]], [[Resolution|resolution]] 2.80Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4ahi]] is a 1 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=4AHI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4AHI FirstGlance]. <br> | |||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1hby|1hby]], [[1h53|1h53]], [[2ang|2ang]], [[1un3|1un3]], [[1a4y|1a4y]], [[1b1j|1b1j]], [[1un4|1un4]], [[1un5|1un5]], [[1h0d|1h0d]], [[1k59|1k59]], [[1b1e|1b1e]], [[1k5b|1k5b]], [[1k58|1k58]], [[1ang|1ang]], [[1k5a|1k5a]], [[1awz|1awz]], [[1b1i|1b1i]], [[1h52|1h52]], [[4ahf|4ahf]], [[4ahe|4ahe]], [[4ahd|4ahd]], [[4ahh|4ahh]], [[4ahj|4ahj]], [[4ahk|4ahk]], [[4ahl|4ahl]], [[4ahm|4ahm]], [[4ahg|4ahg]]</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=4ahi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ahi OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4ahi RCSB], [http://www.ebi.ac.uk/pdbsum/4ahi PDBsum]</span></td></tr> | |||
</table> | |||
== Disease == | |||
[[http://www.uniprot.org/uniprot/ANGI_HUMAN ANGI_HUMAN]] Defects in ANG are the cause of susceptibility to amyotrophic lateral sclerosis type 9 (ALS9) [MIM:[http://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 == | |||
[[http://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®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
= | |||
<references | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Acharya, K R | [[Category: Acharya, K R]] | ||
[[Category: Ferguson, R | [[Category: Ferguson, R]] | ||
[[Category: Pham, T | [[Category: Pham, T]] | ||
[[Category: Saha, S | [[Category: Saha, S]] | ||
[[Category: Subramanian, V | [[Category: Subramanian, V]] | ||
[[Category: Thiyagarajan, N | [[Category: Thiyagarajan, N]] | ||
[[Category: Amyotrophic]] | [[Category: Amyotrophic]] | ||
[[Category: Hydrolase]] | [[Category: Hydrolase]] | ||
[[Category: Lateral sclerosis]] | [[Category: Lateral sclerosis]] | ||
[[Category: Neovascularisation]] | [[Category: Neovascularisation]] |