4G2B | pdb_00004g2b

Structure of the Catalytic Domain of the Salmonella Virulence Factor SseI

PDB DOI: https://doi.org/10.2210/pdb4G2B/pdb

Classification: PROTEIN BINDING
Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
Mutation(s): No

Deposited: 2012-07-11 Released: 2012-11-28
Deposition Author(s): Stebbins, C.E., Bhaskaran, S.S.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.05 Å
R-Value Free:
0.238 (Depositor), 0.242 (DCC)
R-Value Work:
0.194 (Depositor), 0.196 (DCC)
R-Value Observed:
0.196 (Depositor)

wwPDB Validation 3D Report Full Report

Validation slider image for 4G2B

This is version 1.1 of the entry. See complete history.

Literature

Structure of the catalytic domain of the Salmonella virulence factor SseI.

Bhaskaran, S.S., Stebbins, C.E.

(2012) Acta Crystallogr D Biol Crystallogr 68: 1613-1621

PubMed: 23151626 Search on PubMed Search on PubMed Central
DOI: https://doi.org/10.1107/S0907444912039042
Primary Citation Related Structures:
4G29, 4G2B

PubMed Abstract:
SseI is secreted into host cells by Salmonella and contributes to the establishment of systemic infections. The crystal structure of the C-terminal domain of SseI has been solved to 1.70 Å resolution, revealing it to be a member of the cysteine protease superfamily with a catalytic triad consisting of Cys178, His216 and Asp231 that is critical to its virulence activities. Structure-based analysis revealed that SseI is likely to possess either acyl hydrolase or acyltransferase activity, placing this virulence factor in the rapidly growing class of enzymes of this family utilized by bacterial pathogens inside eukaryotic cells.

Organizational Affiliation

Laboratory of Structural Microbiology, The Rockefeller University, New York, NY 10065, USA.

Macromolecule Content

Total Structure Weight: 42.65 kDa
Atom Count: 2,877
Modeled Residue Count: 337
Deposited Residue Count: 372
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Secreted effector protein sseI	A, B	186	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0 Gene Names: sseI, srfH, STM1051
UniProt
Find proteins for Q8ZQ79 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore Q8ZQ79 Go to UniProtKB: Q8ZQ79
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q8ZQ79
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.05 Å
R-Value Free: 0.238 (Depositor), 0.242 (DCC)
R-Value Work: 0.194 (Depositor), 0.196 (DCC)
R-Value Observed: 0.196 (Depositor)

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 53.818	α = 90
b = 62.506	β = 90
c = 110.099	γ = 90

Software Package:

Software Name	Purpose
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

View Full Validation Report

View more in-depth experimental data

Entry History

Deposition Data

Released Date: 2012-11-28

Deposition Author(s):

Bhaskaran, S.S.

Revision History (Full details and data files)

Version 1.0: 2012-11-28
Type: Initial release
Version 1.1: 2024-10-30
Changes: Data collection, Database references, Structure summary

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

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.