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1yau

From Proteopedia

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Revision as of 17:06, 29 January 2020

Structure of Archeabacterial 20S proteasome- PA26 complex

Structural highlights

1yau is a 21 chain structure with sequence from "thermoplasma_acidophila"_(sic)_darland_et_al._1970 "thermoplasma acidophila" (sic) darland et al. 1970 and Trypanosoma (trypanozoon) brucei. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	1ya7, 1yar
Activity:	Proteasome endopeptidase complex, with EC number 3.4.25.1
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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] [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.^[2]

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^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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
↑ 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

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1yau"

@@ Line 1: / Line 1: @@
 ==Structure of Archeabacterial 20S proteasome- PA26 complex==
-<StructureSection load='1yau' size='340' side='right' caption='[[1yau]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
+<StructureSection load='1yau' size='340' side='right'caption='[[1yau]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
 == 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>
@@ Line 32: / Line 32: @@
 ==See Also==
-*[[Proteasome|Proteasome]]
+*[[Proteasome 3D structures|Proteasome 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Proteasome endopeptidase complex]]
 [[Category: Forster, A]]

1yau

From Proteopedia

Revision as of 17:06, 29 January 2020

Structure of Archeabacterial 20S proteasome- PA26 complex

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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