4BJR image
Entry Detail
PDB ID:
4BJR
Keywords:
LIGASE
Title:
Crystal structure of the complex between Prokaryotic Ubiquitin-like Protein Pup and its Ligase PafA
Biological Source:
Source Organism:
CORYNEBACTERIUM GLUTAMICUM
Host Organism:
ESCHERICHIA COLI
PDB Version:
Deposition Date:
2013-04-19
Release Date:
2013-05-01
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.80 Å
R-Value Free:
0.24
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 21 21 21
4BJR validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:PUP--PROTEIN LIGASE, PROKARYOTIC UBIQUITIN-LIKE PROTEIN PUP
Mutations:YES
Chain IDs:A, B
Chain Length:517
Number of Molecules:2
Biological Source:CORYNEBACTERIUM GLUTAMICUM
UniProt ID:Q8NQE1 Pfam ID:PF03136 EC:6.3.1.19
Ligand Molecules
ATP
MG
Primary Citation
Crystal Structure of the Complex between Prokaryotic Ubiquitin-Like Protein Pup and its Ligase Pafa.
J.Am.Chem.Soc. 135 6794 ? (2013)
PMID: 23601177 DOI: 10.1021/JA4024012

Abstact

Prokaryotic ubiquitin-like protein (Pup) is covalently attached to target proteins by the ligase PafA, tagging substrates for proteasomal degradation. The crystal structure of Pup in complex with PafA, reported here, reveals that a long groove wrapping around the enzyme serves as a docking site for Pup. Upon binding, the C-terminal region of the intrinsically disordered Pup becomes ordered to form two helices connected by a linker, positioning the C-terminal glutamate in the active site of PafA.

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Primary Citation of related structures
4BJR