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.

5b4n

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 08:46, 11 March 2020

Structure analysis of function associated loop mutant of substrate recognition domain of Fbs1 ubiquitin ligase

Structural highlights

5b4n is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	Fbxo2, Fbs1, Fbx2 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[FBX2_MOUSE] Substrate recognition component of a SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complex that mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Involved in the endoplasmic reticulum-associated degradation pathway (ERAD) for misfolded lumenal proteins by recognizing and binding sugar chains on unfolded glycoproteins that are retrotranslocated into the cytosol and promoting their ubiquitination and subsequent degradation. Prevents formation of cytosolic aggregates of unfolded glycoproteins that have been retrotranslocated into the cytosol. Able to recognize and bind denatured glycoproteins, preferentially those of the high-mannose type.^[1] ^[2] ^[3] ^[4] ^[5]

Publication Abstract from PubMed

The SCF ubiquitin ligase comprises four components: Skp1, Cul1, Rbx1 and a variable-subunit F-box protein. The F-box protein Fbs1, which recognizes the N-linked glycoproteins, is involved in the endoplasmic reticulum-associated degradation pathway. Although FBG3, another F-box protein, shares 51% sequence identity with Fbs1, FBG3 does not bind glycoproteins. To investigate the sequence-structure relationship of the substrate-binding pocket, the crystal structure of a mutant substrate-binding domain of Fbs1 in which the six nonconserved regions (beta1, beta2-beta3, beta3-beta4, beta5-beta6, beta7-beta8 and beta9-beta10) of Fbs1 were substituted with those of FBG3 was determined. The substrate-binding pocket of this model exhibits structural features that differ from those of Fsb1.

Structural analysis of a function-associated loop mutant of the substrate-recognition domain of Fbs1 ubiquitin ligase.,Nishio K, Yoshida Y, Tanaka K, Mizushima T Acta Crystallogr F Struct Biol Commun. 2016 Aug;72(Pt 8):619-26. doi:, 10.1107/S2053230X16011018. Epub 2016 Jul 27. PMID:27487926^[6]

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

References

↑ Yoshida Y, Chiba T, Tokunaga F, Kawasaki H, Iwai K, Suzuki T, Ito Y, Matsuoka K, Yoshida M, Tanaka K, Tai T. E3 ubiquitin ligase that recognizes sugar chains. Nature. 2002 Jul 25;418(6896):438-42. PMID:12140560 doi:10.1038/nature00890
↑ Yoshida Y, Adachi E, Fukiya K, Iwai K, Tanaka K. Glycoprotein-specific ubiquitin ligases recognize N-glycans in unfolded substrates. EMBO Rep. 2005 Mar;6(3):239-44. PMID:15723043 doi:http://dx.doi.org/10.1038/sj.embor.7400351
↑ Yamaguchi Y, Hirao T, Sakata E, Kamiya Y, Kurimoto E, Yoshida Y, Suzuki T, Tanaka K, Kato K. Fbs1 protects the malfolded glycoproteins from the attack of peptide:N-glycanase. Biochem Biophys Res Commun. 2007 Oct 26;362(3):712-6. Epub 2007 Aug 20. PMID:17720138 doi:http://dx.doi.org/10.1016/j.bbrc.2007.08.056
↑ Yoshida Y, Murakami A, Iwai K, Tanaka K. A neural-specific F-box protein Fbs1 functions as a chaperone suppressing glycoprotein aggregation. J Biol Chem. 2007 Mar 9;282(10):7137-44. Epub 2007 Jan 10. PMID:17215248 doi:http://dx.doi.org/10.1074/jbc.M611168200
↑ Mizushima T, Hirao T, Yoshida Y, Lee SJ, Chiba T, Iwai K, Yamaguchi Y, Kato K, Tsukihara T, Tanaka K. Structural basis of sugar-recognizing ubiquitin ligase. Nat Struct Mol Biol. 2004 Apr;11(4):365-70. Epub 2004 Feb 29. PMID:14990996 doi:http://dx.doi.org/10.1038/nsmb732
↑ Nishio K, Yoshida Y, Tanaka K, Mizushima T. Structural analysis of a function-associated loop mutant of the substrate-recognition domain of Fbs1 ubiquitin ligase. Acta Crystallogr F Struct Biol Commun. 2016 Aug;72(Pt 8):619-26. doi:, 10.1107/S2053230X16011018. Epub 2016 Jul 27. PMID:27487926 doi:http://dx.doi.org/10.1107/S2053230X16011018

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5b4n"

@@ Line 1: / Line 1: @@
 ==Structure analysis of function associated loop mutant of substrate recognition domain of Fbs1 ubiquitin ligase==
-<StructureSection load='5b4n' size='340' side='right' caption='[[5b4n]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
+<StructureSection load='5b4n' size='340' side='right'caption='[[5b4n]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5b4n]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5B4N OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5B4N FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5b4n]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5B4N OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5B4N FirstGlance]. <br>
-</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=5b4n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5b4n OCA], [http://pdbe.org/5b4n PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5b4n RCSB], [http://www.ebi.ac.uk/pdbsum/5b4n PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5b4n ProSAT]</span></td></tr>
+</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Fbxo2, Fbs1, Fbx2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=5b4n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5b4n OCA], [http://pdbe.org/5b4n PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5b4n RCSB], [http://www.ebi.ac.uk/pdbsum/5b4n PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5b4n ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 21: / Line 22: @@
 __TOC__
 </StructureSection>
+[[Category: Human]]
+[[Category: Large Structures]]
 [[Category: Mizushima, T]]
 [[Category: Nishio, K]]

5b4n

From Proteopedia

Revision as of 08:46, 11 March 2020

Structure analysis of function associated loop mutant of substrate recognition domain of Fbs1 ubiquitin ligase

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox