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==High-resolution structure of the HET-s(218-289) prion in its amyloid form obtained by solid-state NMR==
==High-resolution structure of the HET-s(218-289) prion in its amyloid form obtained by solid-state NMR==
<StructureSection load='2kj3' size='340' side='right' caption='[[2kj3]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
<StructureSection load='2kj3' size='340' side='right'caption='[[2kj3]]' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2kj3]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Podas Podas]. The September 2015 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Amyloids''  by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2015_9 10.2210/rcsb_pdb/mom_2015_9]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2KJ3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2KJ3 FirstGlance]. <br>
<table><tr><td colspan='2'>[[2kj3]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Podospora_anserina Podospora anserina]. The September 2015 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Amyloids''  by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2015_9 10.2210/rcsb_pdb/mom_2015_9]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2KJ3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2KJ3 FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2rnm|2rnm]]</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solid-state NMR</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">small s ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=5145 PODAS])</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=2kj3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2kj3 OCA], [https://pdbe.org/2kj3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2kj3 RCSB], [https://www.ebi.ac.uk/pdbsum/2kj3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2kj3 ProSAT]</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=2kj3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2kj3 OCA], [http://pdbe.org/2kj3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2kj3 RCSB], [http://www.ebi.ac.uk/pdbsum/2kj3 PDBsum]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/HETS_PODAS HETS_PODAS]] Responsible for heterokaryon incompatibility, a process that ensures that during spontaneous, vegetative cell fusion only compatible cells from the same colony survive (non-self-recognition). Forms a prion for the non-Mendelian trait [het-s]. Interacts with het-S from incompatible cells to trigger a lethal reaction that prevents the formation of viable heterokaryons. It is unknown if the native, soluble protein has a cellular function.<ref>PMID:1886611</ref> <ref>PMID:8224826</ref> <ref>PMID:9275200</ref> 
[https://www.uniprot.org/uniprot/HETS_PODAS HETS_PODAS] Responsible for heterokaryon incompatibility, a process that ensures that during spontaneous, vegetative cell fusion only compatible cells from the same colony survive (non-self-recognition). Forms a prion for the non-Mendelian trait [het-s]. Interacts with het-S from incompatible cells to trigger a lethal reaction that prevents the formation of viable heterokaryons. It is unknown if the native, soluble protein has a cellular function.<ref>PMID:1886611</ref> <ref>PMID:8224826</ref> <ref>PMID:9275200</ref>  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
We present a strategy to solve the high-resolution structure of amyloid fibrils by solid-state NMR and use it to determine the atomic-resolution structure of the prion domain of the fungal prion HET-s in its amyloid form. On the basis of 134 unambiguous distance restraints, we recently showed that HET-s(218-289) in its fibrillar state forms a left-handed beta-solenoid, and an atomic-resolution NMR structure of the triangular core was determined from unambiguous restraints only. In this paper, we go considerably further and present a comprehensive protocol using six differently labeled samples, a collection of optimized solid-state NMR experiments, and adapted structure calculation protocols. The high-resolution structure obtained includes the less ordered but biologically important C-terminal part and improves the overall accuracy by including a large number of ambiguous distance restraints.
 
Atomic-Resolution Three-Dimensional Structure of HET-s(218-289) Amyloid Fibrils by Solid-State NMR Spectroscopy.,Van Melckebeke H, Wasmer C, Lange A, Ab E, Loquet A, Bockmann A, Meier BH J Am Chem Soc. 2010 Sep 9. PMID:20828131<ref>PMID:20828131</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2kj3" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Prion|Prion]]
*[[Prion 3D structures|Prion 3D structures]]
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: Amyloids]]
[[Category: Amyloids]]
[[Category: Podas]]
[[Category: Large Structures]]
[[Category: Podospora anserina]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Ab, E]]
[[Category: AB E]]
[[Category: Lange, A]]
[[Category: Lange A]]
[[Category: Loquet, A]]
[[Category: Loquet A]]
[[Category: Meier, B H]]
[[Category: Meier BH]]
[[Category: Melckebeke, H Van]]
[[Category: Van Melckebeke H]]
[[Category: Wasmer, C]]
[[Category: Wasmer C]]
[[Category: Amyloid fibril]]
[[Category: Asparagine ladder]]
[[Category: Beta-helix]]
[[Category: Beta-solenoid]]
[[Category: Hydrophobic core]]
[[Category: Parallel beta-sheet]]
[[Category: Prion]]
[[Category: Protein fibril]]
[[Category: Salt bridge]]

Latest revision as of 09:46, 1 May 2024

High-resolution structure of the HET-s(218-289) prion in its amyloid form obtained by solid-state NMRHigh-resolution structure of the HET-s(218-289) prion in its amyloid form obtained by solid-state NMR

Structural highlights

2kj3 is a 3 chain structure with sequence from Podospora anserina. The September 2015 RCSB PDB Molecule of the Month feature on Amyloids by David Goodsell is 10.2210/rcsb_pdb/mom_2015_9. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Solid-state NMR
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

HETS_PODAS Responsible for heterokaryon incompatibility, a process that ensures that during spontaneous, vegetative cell fusion only compatible cells from the same colony survive (non-self-recognition). Forms a prion for the non-Mendelian trait [het-s]. Interacts with het-S from incompatible cells to trigger a lethal reaction that prevents the formation of viable heterokaryons. It is unknown if the native, soluble protein has a cellular function.[1] [2] [3]

See Also

References

  1. ↑ Turcq B, Deleu C, Denayrolles M, Begueret J. Two allelic genes responsible for vegetative incompatibility in the fungus Podospora anserina are not essential for cell viability. Mol Gen Genet. 1991 Aug;228(1-2):265-9. PMID:1886611
  2. ↑ Deleu C, Clave C, Begueret J. A single amino acid difference is sufficient to elicit vegetative incompatibility in the fungus Podospora anserina. Genetics. 1993 Sep;135(1):45-52. PMID:8224826
  3. ↑ Coustou V, Deleu C, Saupe S, Begueret J. The protein product of the het-s heterokaryon incompatibility gene of the fungus Podospora anserina behaves as a prion analog. Proc Natl Acad Sci U S A. 1997 Sep 2;94(18):9773-8. PMID:9275200
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