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| | <StructureSection load='1yau' size='340' side='right'caption='[[1yau]], [[Resolution|resolution]] 2.40Å' scene=''> | | <StructureSection load='1yau' size='340' side='right'caption='[[1yau]], [[Resolution|resolution]] 2.40Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1yau]] is a 21 chain structure with sequence from [http://en.wikipedia.org/wiki/"thermoplasma_acidophila"_(sic)_darland_et_al._1970 "thermoplasma acidophila" (sic) darland et al. 1970] and [http://en.wikipedia.org/wiki/Trypanosoma_(trypanozoon)_brucei Trypanosoma (trypanozoon) brucei]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YAU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1YAU FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1yau]] is a 21 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermoplasma_acidophilum Thermoplasma acidophilum] and [https://en.wikipedia.org/wiki/Trypanosoma_brucei Trypanosoma brucei]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YAU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YAU FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 2.4Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ya7|1ya7]], [[1yar|1yar]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Proteasome_endopeptidase_complex Proteasome endopeptidase complex], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.25.1 3.4.25.1] </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=1yau FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yau OCA], [https://pdbe.org/1yau PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yau RCSB], [https://www.ebi.ac.uk/pdbsum/1yau PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yau 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=1yau FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yau OCA], [http://pdbe.org/1yau PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1yau RCSB], [http://www.ebi.ac.uk/pdbsum/1yau PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1yau ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/PSA_THEAC PSA_THEAC]] Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The T.acidophilum proteasome is able to cleave oligopeptides after Tyr, Leu, Phe, and to a lesser extent after Glu and Arg. Thus, displays chymotrypsin-like activity and low level of caspase-like and trypsin-like activities.<ref>PMID:8999862</ref> [[http://www.uniprot.org/uniprot/PSB_THEAC PSB_THEAC]] Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The T.acidophilum proteasome is able to cleave oligopeptides after Tyr, Leu, Phe, and to a lesser extent after Glu and Arg. Thus, displays chymotrypsin-like activity and low level of caspase-like and trypsin-like activities.<ref>PMID:8999862</ref> | + | [https://www.uniprot.org/uniprot/PSA_THEAC PSA_THEAC] Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The T.acidophilum proteasome is able to cleave oligopeptides after Tyr, Leu, Phe, and to a lesser extent after Glu and Arg. Thus, displays chymotrypsin-like activity and low level of caspase-like and trypsin-like activities.<ref>PMID:8999862</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Proteasome endopeptidase complex]] | + | [[Category: Thermoplasma acidophilum]] |
| - | [[Category: Forster, A]] | + | [[Category: Trypanosoma brucei]] |
| - | [[Category: Hill, C P]] | + | [[Category: Forster A]] |
| - | [[Category: Masters, E I]] | + | [[Category: Hill CP]] |
| - | [[Category: Robinson, H]] | + | [[Category: Masters EI]] |
| - | [[Category: Whitby, F G]] | + | [[Category: Robinson H]] |
| - | [[Category: Hydrolase-hydrolase activator complex]]
| + | [[Category: Whitby FG]] |
| - | [[Category: Pa26 proteasome activator 11]]
| + | |
| - | [[Category: Proteasome 20]]
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| Structural highlights
Function
PSA_THEAC Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The T.acidophilum proteasome is able to cleave oligopeptides after Tyr, Leu, Phe, and to a lesser extent after Glu and Arg. Thus, displays chymotrypsin-like activity and low level of caspase-like and trypsin-like activities.[1]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Proteasomes are cylindrical structures that function in multiple cellular processes by degrading a wide variety of cytosolic and nuclear proteins. Substrate access and product release from the enclosed catalytic chamber occurs through axial pores that are opened by activator complexes. Here, we report high-resolution structures of wild-type and mutant archaeal proteasomes bound to the activator PA26. These structures support the proposal that an ordered open conformation is required for proteolysis and that its formation can be triggered by outward displacement of surrounding residues. The structures and associated biochemical assays reveal the mechanism of binding, which involves an interaction between the PA26 C terminus and a conserved lysine. Surprisingly, biochemical observations implicate an equivalent interaction for the unrelated ATP-dependent activators PAN and PA700.
The 1.9 A structure of a proteasome-11S activator complex and implications for proteasome-PAN/PA700 interactions.,Forster A, Masters EI, Whitby FG, Robinson H, Hill CP Mol Cell. 2005 May 27;18(5):589-99. PMID:15916965[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Akopian TN, Kisselev AF, Goldberg AL. Processive degradation of proteins and other catalytic properties of the proteasome from Thermoplasma acidophilum. J Biol Chem. 1997 Jan 17;272(3):1791-8. PMID:8999862
- ↑ Forster A, Masters EI, Whitby FG, Robinson H, Hill CP. The 1.9 A structure of a proteasome-11S activator complex and implications for proteasome-PAN/PA700 interactions. Mol Cell. 2005 May 27;18(5):589-99. PMID:15916965 doi:http://dx.doi.org/10.1016/j.molcel.2005.04.016
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