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.

2fnj

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:41, 18 October 2017

Crystal structure of a B30.2/SPRY domain-containing protein GUSTAVUS in complex with Elongin B and Elongin C

Structural highlights

2fnj is a 3 chain structure with sequence from Drome and Lk3 transgenic mice. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1vcb
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ELOC_MOUSE] SIII, also known as elongin, is a general transcription elongation factor that increases the RNA polymerase II transcription elongation past template-encoded arresting sites. Subunit A is transcriptionally active and its transcription activity is strongly enhanced by binding to the dimeric complex of the SIII regulatory subunits B and C (elongin BC complex). The elongin BC complex seems to be involved as an adapter protein in the proteasomal degradation of target proteins via different E3 ubiquitin ligase complexes, including the von Hippel-Lindau ubiquitination complex CBC(VHL). By binding to BC-box motifs it seems to link target recruitment subunits, like VHL and members of the SOCS box family, to Cullin/RBX1 modules that activate E2 ubiquitination enzymes. [ELOB_MOUSE] SIII, also known as elongin, is a general transcription elongation factor that increases the RNA polymerase II transcription elongation past template-encoded arresting sites. Subunit A is transcriptionally active and its transcription activity is strongly enhanced by binding to the dimeric complex of the SIII regulatory subunits B and C (elongin BC complex). The elongin BC complex seems to be involved as an adapter protein in the proteasomal degradation of target proteins via different E3 ubiquitin ligase complexes, including the von Hippel-Lindau ubiquitination complex CBC(VHL). By binding to BC-box motifs it seems to link target recruitment subunits, like VHL and members of the SOCS box family, to Cullin/RBX1 modules that activate E2 ubiquitination enzymes.

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 B30.2/SPRY domain is present in approximately 700 eukaryotic (approximately 150 human) proteins, including medically important proteins such as TRIM5alpha and Pyrin. Nonetheless, the functional role of this modular domain remained unclear. Here, we report the crystal structure of an SPRY-SOCS box family protein GUSTAVUS in complex with Elongins B and C, revealing a highly distorted two-layered beta-sandwich core structure of its B30.2/SPRY domain. Ensuing studies identified one end of the beta-sandwich as the surface interacting with an RNA helicase VASA with a 40 nM dissociation constant. The sequence variation in TRIM5alpha responsible for HIV-1 restriction and most of the mutations in Pyrin causing familial Mediterranean fever map on this surface, implicating the corresponding region in many B30.2/SPRY domains as the ligand-binding site. The amino acids lining the binding surface are highly variable among the B30.2/SPRY domains, suggesting that these domains are protein-interacting modules, which recognize a specific individual partner protein rather than a consensus sequence motif.

Structural and functional insights into the B30.2/SPRY domain.,Woo JS, Imm JH, Min CK, Kim KJ, Cha SS, Oh BH EMBO J. 2006 Mar 22;25(6):1353-63. Epub 2006 Feb 23. PMID:16498413^[1]

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

References

↑ Woo JS, Imm JH, Min CK, Kim KJ, Cha SS, Oh BH. Structural and functional insights into the B30.2/SPRY domain. EMBO J. 2006 Mar 22;25(6):1353-63. Epub 2006 Feb 23. PMID:16498413

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2fnj"

@@ Line 1: / Line 1: @@
 ==Crystal structure of a B30.2/SPRY domain-containing protein GUSTAVUS in complex with Elongin B and Elongin C==
 <StructureSection load='2fnj' size='340' side='right' caption='[[2fnj]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[2fnj]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Drome Drome] and [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FNJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FNJ FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1vcb|1vcb]]</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=2fnj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fnj OCA], [http://pdbe.org/2fnj PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fnj RCSB], [http://www.ebi.ac.uk/pdbsum/2fnj 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=2fnj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fnj OCA], [http://pdbe.org/2fnj PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fnj RCSB], [http://www.ebi.ac.uk/pdbsum/2fnj PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2fnj ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 27: / Line 28: @@
 </div>
 <div class="pdbe-citations 2fnj" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Elongation factor|Elongation factor]]
-*[[Transcription factor SIII|Transcription factor SIII]]
 == References ==
 <references/>

2fnj

From Proteopedia

Revision as of 07:41, 18 October 2017

Crystal structure of a B30.2/SPRY domain-containing protein GUSTAVUS in complex with Elongin B and Elongin C

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox