ISDA

Entry Detail

PDB ID:

3RTR

Keywords:

LIGASE

Title:

A RING E3-substrate complex poised for ubiquitin-like protein transfer: structural insights into cullin-RING ligases

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2011-05-03

Release Date:

2011-07-20

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.21 Å

R-Value Free:

0.28

R-Value Work:

0.23

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Cullin-1
Mutations:L421E, V451E, V452K, Y455K
Chain IDs:A, C, E, G
Chain Length:368
Number of Molecules:4
Biological Source:Homo sapiens

UniProt ID:Q13616 Pfam ID:PF00888, PF10557 EC:2.3.2.27

Protein Blast

Polymer Type:polypeptide(L)
Description:E3 ubiquitin-protein ligase RBX1
Chain IDs:B, D, F, H
Chain Length:106
Number of Molecules:4
Biological Source:Homo sapiens

UniProt ID:P62877 Pfam ID:PF12678 EC:2.3.2.27

Ligand Molecules

Primary Citation

A RING E3-substrate complex poised for ubiquitin-like protein transfer: structural insights into cullin-RING ligases.

Calabrese, M.F, Scott, D.C, Duda, D.M, Grace, C.R, Kurinov, I, Kriwacki, R.W, Schulman, B.A.Show

Nat.Struct.Mol.Biol. 18 947 949 (2011)

PMID: 21765416 DOI: 10.1038/nsmb.2086

Abstact

How RING E3 ligases mediate E2-to-substrate ubiquitin-like protein (UBL) transfer remains unknown. Here we address how the RING E3 RBX1 positions NEDD8's E2 (UBC12) and substrate (CUL1). We find that existing structures are incompatible with CUL1 NEDD8ylation and report a new conformation of RBX1 that places UBC12 adjacent to CUL1. We propose RING domain rotation as a general mechanism for UBL transfer for the largest family of E3s.

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Primary Citation of related structures