1fs2

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{{STRUCTURE_1fs2| PDB=1fs2 | SCENE= }}
{{STRUCTURE_1fs2| PDB=1fs2 | SCENE= }}
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'''INSIGHTS INTO SCF UBIQUITIN LIGASES FROM THE STRUCTURE OF THE SKP1-SKP2 COMPLEX'''
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===INSIGHTS INTO SCF UBIQUITIN LIGASES FROM THE STRUCTURE OF THE SKP1-SKP2 COMPLEX===
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==Overview==
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F-box proteins are members of a large family that regulates the cell cycle, the immune response, signalling cascades and developmental programmes by targeting proteins, such as cyclins, cyclin-dependent kinase inhibitors, IkappaBalpha and beta-catenin, for ubiquitination (reviewed in refs 1-3). F-box proteins are the substrate-recognition components of SCF (Skp1-Cullin-F-box protein) ubiquitin-protein ligases. They bind the SCF constant catalytic core by means of the F-box motif interacting with Skp1, and they bind substrates through their variable protein-protein interaction domains. The large number of F-box proteins is thought to allow ubiquitination of numerous, diverse substrates. Most organisms have several Skp1 family members, but the function of these Skp1 homologues and the rules of recognition between different F-box and Skp1 proteins remain unknown. Here we describe the crystal structure of the human F-box protein Skp2 bound to Skp1. Skp1 recruits the F-box protein through a bipartite interface involving both the F-box and the substrate-recognition domain. The structure raises the possibility that different Skp1 family members evolved to function with different subsets of F-box proteins, and suggests that the F-box protein may not only recruit substrate, but may also position it optimally for the ubiquitination reaction.
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(as it appears on PubMed at http://www.pubmed.gov), where 11099048 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11099048}}
==About this Structure==
==About this Structure==
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[[Category: Ubiquitin]]
[[Category: Ubiquitin]]
[[Category: Ubiquitin protein ligase]]
[[Category: Ubiquitin protein ligase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 16:41:57 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 03:51:29 2008''

Revision as of 00:51, 1 July 2008

Image:1fs2.png

Template:STRUCTURE 1fs2

INSIGHTS INTO SCF UBIQUITIN LIGASES FROM THE STRUCTURE OF THE SKP1-SKP2 COMPLEX

Template:ABSTRACT PUBMED 11099048

About this Structure

1FS2 is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Insights into SCF ubiquitin ligases from the structure of the Skp1-Skp2 complex., Schulman BA, Carrano AC, Jeffrey PD, Bowen Z, Kinnucan ER, Finnin MS, Elledge SJ, Harper JW, Pagano M, Pavletich NP, Nature. 2000 Nov 16;408(6810):381-6. PMID:11099048

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