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1tt5

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{{STRUCTURE_1tt5| PDB=1tt5 | SCENE= }}
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'''Structure of APPBP1-UBA3-Ubc12N26: a unique E1-E2 interaction required for optimal conjugation of the ubiquitin-like protein NEDD8'''
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===Structure of APPBP1-UBA3-Ubc12N26: a unique E1-E2 interaction required for optimal conjugation of the ubiquitin-like protein NEDD8===
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==Overview==
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Ubiquitin-like proteins (UBLs) such as NEDD8 are transferred to their targets by distinct, parallel, multienzyme cascades that involve the sequential action of E1, E2 and E3 enzymes. How do enzymes within a particular UBL conjugation cascade interact with each other? We report here that the unique N-terminal sequence of NEDD8's E2, Ubc12, selectively recruits NEDD8's E1 to promote thioester formation between Ubc12 and NEDD8. A peptide corresponding to Ubc12's N terminus (Ubc12N26) specifically binds and inhibits NEDD8's E1, the heterodimeric APPBP1-UBA3 complex. The structure of APPBP1-UBA3- Ubc12N26 reveals conserved Ubc12 residues docking in a groove generated by loops conserved in UBA3s but not other E1s. These data explain why the Ubc12-UBA3 interaction is unique to the NEDD8 pathway. These studies define a novel mechanism for E1-E2 interaction and show how enzymes within a particular UBL conjugation cascade can be tethered together by unique protein-protein interactions emanating from their common structural scaffolds.
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(as it appears on PubMed at http://www.pubmed.gov), where 15361859 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15361859}}
==About this Structure==
==About this Structure==
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[[Category: Cell cycle]]
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[[Category: Ligase]]
[[Category: Ligase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 08:17:56 2008''

Revision as of 05:17, 28 July 2008

Image:1tt5.png

Template:STRUCTURE 1tt5

Structure of APPBP1-UBA3-Ubc12N26: a unique E1-E2 interaction required for optimal conjugation of the ubiquitin-like protein NEDD8

Template:ABSTRACT PUBMED 15361859

About this Structure

1TT5 is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

A unique E1-E2 interaction required for optimal conjugation of the ubiquitin-like protein NEDD8., Huang DT, Miller DW, Mathew R, Cassell R, Holton JM, Roussel MF, Schulman BA, Nat Struct Mol Biol. 2004 Oct;11(10):927-35. Epub 2004 Sep 7. PMID:15361859

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