5C9E

SepL

• PDB DOI: https://doi.org/10.2210/pdb5C9E/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-06-26 Released: 2015-10-14 
• Deposition Author(s): Burkinshaw, B.J., Strynadka, N.C.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.21 Å
• R-Value Free: 0.256 
• R-Value Work: 0.210 
• R-Value Observed: 0.213 

Literature

Structural analysis of SepL, an enteropathogenic Escherichia coli type III secretion system gatekeeper protein

Burkinshaw, B.J., Souza, S.A., Strynadka, N.C.J.

(2015) Acta Crystallogr F Struct Biol Commun 71: 1300-1308

• DOI: https://doi.org/10.1107/S2053230X15016064

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 3 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 65.33 kDa 
• Atom Count: 4,283 
• Modelled Residue Count: 526 
• Deposited Residue Count: 564 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SepL	A, B	282	Escherichia coli	Mutation(s): 0  Gene Names: sepL
UniProt
Find proteins for O52149 (Escherichia coli) Explore O52149  Go to UniProtKB:  O52149

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BR	C [auth A], D [auth A], E [auth B], F [auth B]	BROMIDE ION Br CPELXLSAUQHCOX-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.21 Å
• R-Value Free: 0.256 
• R-Value Work: 0.210 
• R-Value Observed: 0.213 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 84.32	α = 90
b = 84.32	β = 90
c = 238.96	γ = 90

Software Package:

Software Name	Purpose
Aimless	data scaling
BUSTER-TNT	refinement
PDB_EXTRACT	data extraction
xia2	data reduction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-10-14 
Deposition Author(s): Burkinshaw, B.J., Strynadka, N.C.J.

Revision History  

• Version 1.0: 2015-10-14
  Type: Initial release
  
• Version 1.1: 2017-09-27
  Changes: Author supporting evidence, Derived calculations
• Version 1.2: 2024-03-06
  Changes: Data collection, Database references