2e32: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:2e32.jpg|left|200px]] | [[Image:2e32.jpg|left|200px]] | ||
<!-- | |||
The line below this paragraph, containing "STRUCTURE_2e32", creates the "Structure Box" on the page. | |||
You may change the PDB parameter (which sets the PDB file loaded into the applet) | |||
or the SCENE parameter (which sets the initial scene displayed when the page is loaded), | |||
or leave the SCENE parameter empty for the default display. | |||
--> | |||
{{STRUCTURE_2e32| PDB=2e32 | SCENE= }} | |||
}} | |||
'''Structural basis for selection of glycosylated substrate by SCFFbs1 ubiquitin ligase''' | '''Structural basis for selection of glycosylated substrate by SCFFbs1 ubiquitin ligase''' | ||
| Line 32: | Line 29: | ||
[[Category: Yamane, T.]] | [[Category: Yamane, T.]] | ||
[[Category: Yoshida, Y.]] | [[Category: Yoshida, Y.]] | ||
[[Category: | [[Category: Fbs1]] | ||
[[Category: | [[Category: Scf]] | ||
[[Category: | [[Category: Ubiquitin]] | ||
[[Category: | [[Category: Ubiquitin ligase]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 01:50:02 2008'' | |||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | |||
Revision as of 01:50, 4 May 2008
Structural basis for selection of glycosylated substrate by SCFFbs1 ubiquitin ligase
OverviewOverview
The ubiquitin ligase complex SCF(Fbs1), which contributes to the ubiquitination of glycoproteins, is involved in the endoplasmic reticulum-associated degradation pathway. In SCF ubiquitin ligases, a diverse array of F-box proteins confers substrate specificity. Fbs1/Fbx2, a member of the F-box protein family, recognizes high-mannose oligosaccharides. To elucidate the structural basis of SCF(Fbs1) function, we determined the crystal structures of the Skp1-Fbs1 complex and the sugar-binding domain (SBD) of the Fbs1-glycoprotein complex. The mechanistic model indicated by the structures appears to be well conserved among the SCF ubiquitin ligases. The structure of the SBD-glycoprotein complex indicates that the SBD primarily recognizes Man(3)GlcNAc(2), thereby explaining the broad activity of the enzyme against various glycoproteins. Comparison of two crystal structures of the Skp1-Fbs1 complex revealed the relative motion of a linker segment between the F-box and the SBD domains, which might underlie the ability of the complex to recognize different acceptor lysine residues for ubiquitination.
About this StructureAbout this Structure
2E32 is a Protein complex structure of sequences from Homo sapiens and Mus musculus. Full crystallographic information is available from OCA.
ReferenceReference
Structural basis for the selection of glycosylated substrates by SCF(Fbs1) ubiquitin ligase., Mizushima T, Yoshida Y, Kumanomidou T, Hasegawa Y, Suzuki A, Yamane T, Tanaka K, Proc Natl Acad Sci U S A. 2007 Apr 3;104(14):5777-81. Epub 2007 Mar 26. PMID:17389369 Page seeded by OCA on Sun May 4 01:50:02 2008