This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

3h4p

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 05:36, 7 December 2018

Warning: this is a large structure, and loading might take a long time or not happen at all.

Proteasome 20S core particle from Methanocaldococcus jannaschii

Structural highlights

3h4p is a 28 chain structure with sequence from Atcc 43067. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	3h43, 3h4m
Gene:	psmA, MJ0591 (ATCC 43067), psmB, MJ1237 (ATCC 43067)
Activity:	Proteasome endopeptidase complex, with EC number 3.4.25.1
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Warning: this is a large structure, and loading might take a long time or not happen at all.

Function

[PSA_METJA] Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The M.jannaschii proteasome is able to cleave oligopeptides after Glu, Asp, Tyr, Phe, Trp, slightly after Arg, but not after Ala. Thus, displays caspase-like and chymotrypsin-like activities and low level of trypsin-like activity.[HAMAP-Rule:MF_00289]^[1] [PSB_METJA] Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The M.jannaschii proteasome is able to cleave oligopeptides after Glu, Asp, Tyr, Phe, Trp, slightly after Arg, but not after Ala. Thus, displays caspase-like and chymotrypsin-like activities and low level of trypsin-like activity.[HAMAP-Rule:MF_02113]^[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

Eukaryotic proteasome consists of a core particle (CP), which degrades unfolded protein, and a regulatory particle (RP), which is responsible for recognition, ATP-dependent unfolding, and translocation of polyubiquitinated substrate protein. In the archaea Methanocaldococcus jannaschii, the RP is a homohexameric complex of proteasome-activating nucleotidase (PAN). Here, we report the crystal structures of essential elements of the archaeal proteasome: the CP, the ATPase domain of PAN, and a distal subcomplex that is likely the first to encounter substrate. The distal subcomplex contains a coiled-coil segment and an OB-fold domain, both of which appear to be conserved in the eukaryotic proteasome. The OB domains of PAN form a hexameric ring with a 13 A pore, which likely constitutes the outermost constriction of the substrate translocation channel. These studies reveal structural codes and architecture of the complete proteasome, identify potential substrate-binding sites, and uncover unexpected asymmetry in the RP of archaea and eukaryotes.

Structural insights into the regulatory particle of the proteasome from Methanocaldococcus jannaschii.,Zhang F, Hu M, Tian G, Zhang P, Finley D, Jeffrey PD, Shi Y Mol Cell. 2009 May 14;34(4):473-84. PMID:19481527^[3]

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

References

↑ Wilson HL, Ou MS, Aldrich HC, Maupin-Furlow J. Biochemical and physical properties of the Methanococcus jannaschii 20S proteasome and PAN, a homolog of the ATPase (Rpt) subunits of the eucaryal 26S proteasome. J Bacteriol. 2000 Mar;182(6):1680-92. PMID:10692374
↑ Wilson HL, Ou MS, Aldrich HC, Maupin-Furlow J. Biochemical and physical properties of the Methanococcus jannaschii 20S proteasome and PAN, a homolog of the ATPase (Rpt) subunits of the eucaryal 26S proteasome. J Bacteriol. 2000 Mar;182(6):1680-92. PMID:10692374
↑ Zhang F, Hu M, Tian G, Zhang P, Finley D, Jeffrey PD, Shi Y. Structural insights into the regulatory particle of the proteasome from Methanocaldococcus jannaschii. Mol Cell. 2009 May 14;34(4):473-84. PMID:19481527 doi:10.1016/j.molcel.2009.04.021

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/3h4p"

@@ Line 7: / Line 7: @@
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">psmA, MJ0591 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2190 ATCC 43067]), psmB, MJ1237 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2190 ATCC 43067])</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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3h4p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3h4p OCA], [http://pdbe.org/3h4p PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3h4p RCSB], [http://www.ebi.ac.uk/pdbsum/3h4p PDBsum]</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=3h4p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3h4p OCA], [http://pdbe.org/3h4p PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3h4p RCSB], [http://www.ebi.ac.uk/pdbsum/3h4p PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3h4p ProSAT]</span></td></tr>
 </table>
 {{Large structure}}
@@ Line 16: / Line 16: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/h4/3h4p_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/h4/3h4p_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

3h4p

From Proteopedia

Revision as of 05:36, 7 December 2018

Proteasome 20S core particle from Methanocaldococcus jannaschii

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox