1pma

From Proteopedia

(Difference between revisions)

Revision as of 09:45, 27 November 2019

PROTEASOME FROM THERMOPLASMA ACIDOPHILUM

Structural highlights

1pma is a 28 chain structure with sequence from "thermoplasma_acidophila"_(sic)_darland_et_al._1970 "thermoplasma acidophila" (sic) darland et al. 1970. The October 2013 RCSB PDB Molecule of the Month feature on Proteasome by David Goodsell is 10.2210/rcsb_pdb/mom_2013_10. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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

The three-dimensional structure of the proteasome from the archaebacterium Thermoplasma acidophilum has been elucidated by x-ray crystallographic analysis by means of isomorphous replacement and cyclic averaging. The atomic model was built and refined to a crystallographic R factor of 22.1 percent. The 673-kilodalton protease complex consists of 14 copies of two different subunits, alpha and beta, forming a barrel-shaped structure of four stacked rings. The two inner rings consist of seven beta subunits each, and the two outer rings consist of seven alpha subunits each. A narrow channel controls access to the three inner compartments. The alpha 7 beta 7 beta 7 alpha 7 subunit assembly has 72-point group symmetry. The structures of the alpha and beta subunits are similar, consisting of a core of two antiparallel beta sheets that is flanked by alpha helices on both sides. The binding of a peptide aldehyde inhibitor marks the active site in the central cavity at the amino termini of the beta subunits and suggests a novel proteolytic mechanism.

Crystal structure of the 20S proteasome from the archaeon T. acidophilum at 3.4 A resolution.,Lowe J, Stock D, Jap B, Zwickl P, Baumeister W, Huber R Science. 1995 Apr 28;268(5210):533-9. PMID:7725097^[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
↑ Lowe J, Stock D, Jap B, Zwickl P, Baumeister W, Huber R. Crystal structure of the 20S proteasome from the archaeon T. acidophilum at 3.4 A resolution. Science. 1995 Apr 28;268(5210):533-9. PMID:7725097

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/1pma"

@@ Line 1: / Line 1: @@
 ==PROTEASOME FROM THERMOPLASMA ACIDOPHILUM==
-<StructureSection load='1pma' size='340' side='right' caption='[[1pma]], [[Resolution|resolution]] 3.40&Aring;' scene=''>
+<StructureSection load='1pma' size='340' side='right'caption='[[1pma]], [[Resolution|resolution]] 3.40&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1pma]] is a 28 chain structure with sequence from [http://en.wikipedia.org/wiki/"thermoplasma_acidophila"_(sic)_darland_et_al._1970 "thermoplasma acidophila" (sic) darland et al. 1970]. The October 2013 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Proteasome''  by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2013_10 10.2210/rcsb_pdb/mom_2013_10]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PMA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1PMA FirstGlance]. <br>
@@ Line 28: / Line 28: @@
 </div>
 <div class="pdbe-citations 1pma" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Proteasome|Proteasome]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Proteasome]]
 [[Category: Proteasome endopeptidase complex]]

1pma

From Proteopedia

Revision as of 09:45, 27 November 2019

PROTEASOME FROM THERMOPLASMA ACIDOPHILUM

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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