3Q1C | pdb_00003q1c

Structure of EspG Protein

PDB DOI: https://doi.org/10.2210/pdb3Q1C/pdb

Classification: SIGNALING PROTEIN
Organism(s): Escherichia coli O127:H6 str. E2348/69
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2010-12-17 Released: 2011-02-23
Deposition Author(s): Spiller, B.W., Germane, K.L.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.60 Å
R-Value Free:
0.188 (Depositor), 0.185 (DCC)
R-Value Work:
0.161 (Depositor), 0.157 (DCC)
R-Value Observed:
0.162 (Depositor)

wwPDB Validation 3D Report Full Report

Validation slider image for 3Q1C

This is version 1.2 of the entry. See complete history.

Literature

Structural and Functional Studies Indicate That the EPEC Effector, EspG, Directly Binds p21-Activated Kinase.

Germane, K.L., Spiller, B.W.

(2011) Biochemistry 50: 917-919

PubMed: 21235237 Search on PubMed Search on PubMed Central
DOI: https://doi.org/10.1021/bi1020138
Primary Citation Related Structures:
3Q1C

PubMed Abstract:
Bacterial pathogens secrete effectors into their hosts that subvert host defenses and redirect host processes. EspG is a type three secretion effector with a disputed function that is found in enteropathogenic Escherichia coli. Here we show that EspG is structurally similar to VirA, a Shigella virulence factor; EspG has a large, conserved pocket on its surface; EspG binds directly to the amino-terminal inhibitory domain of human p21-activated kinase (PAK); and mutations to conserved residues in the surface pocket disrupt the interaction with PAK.

Organizational Affiliation

Department of Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States.

Macromolecule Content

Total Structure Weight: 39.88 kDa
Atom Count: 3,163
Modeled Residue Count: 351
Deposited Residue Count: 360
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
LEE-encoded effector EspG	A	360	Escherichia coli O127:H6 str. E2348/69	Mutation(s): 0 Gene Names: E2348C_3970, E2348_C_3970, espG
UniProt
Find proteins for B7UMC8 (Escherichia coli O127:H6 (strain E2348/69 / EPEC)) Explore B7UMC8 Go to UniProtKB: B7UMC8
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	B7UMC8
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.60 Å
R-Value Free: 0.188 (Depositor), 0.185 (DCC)
R-Value Work: 0.161 (Depositor), 0.157 (DCC)
R-Value Observed: 0.162 (Depositor)

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.15	α = 90
b = 74.378	β = 90
c = 93.921	γ = 90

Software Package:

Software Name	Purpose
PHENIX	model building
PHENIX	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing

Structure Validation

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View more in-depth experimental data

Entry History

Deposition Data

Released Date: 2011-02-23

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 2011-02-23
Type: Initial release
Version 1.1: 2011-07-13
Changes: Version format compliance
Version 1.2: 2024-02-21
Changes: Data collection, Database references

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.