3KSX | pdb_00003ksx

The alkanesulfonate-binding protein SsuA from Xanthomonas axonopodis pv. citri bound to MOPS

• PDB DOI: https://doi.org/10.2210/pdb3KSX/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Xanthomonas citri subsp. citri 306
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2009-11-23 Released: 2010-10-13 
• Deposition Author(s): Balan, A., Araujo, F.T., Barbosa, J.A.R.G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 
  0.213 (Depositor), 0.201 (DCC) 
• R-Value Work: 
  0.163 (Depositor) 
• R-Value Observed: 
  0.166 (Depositor) 

Starting Model: experimental

Literature

The crystallographic structure of the SsuA protein reveals how alkanesulfonates enter into the cell

Balan, A., Araujo, F.T., Barbosa, J.A.R.G.

To be published.

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 35.06 kDa 
• Atom Count: 2,431 
• Modeled Residue Count: 289 
• Deposited Residue Count: 324 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Nitrate transport protein	A	324	Xanthomonas citri subsp. citri 306	Mutation(s): 0  Gene Names: ssuA

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MPO	B [auth A]	3[N-MORPHOLINO]PROPANE SULFONIC ACID C7 H15 N O4 S DVLFYONBTKHTER-UHFFFAOYSA-N
SO4	C [auth A], D [auth A], E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free:  0.213 (Depositor), 0.201 (DCC) 
• R-Value Work:  0.163 (Depositor) 
• R-Value Observed: 0.166 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 31.042	α = 90
b = 86.446	β = 97.76
c = 47.015	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-10-13 
Deposition Author(s): Balan, A., Araujo, F.T., Barbosa, J.A.R.G.

Revision History  

• Version 1.0: 2010-10-13
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description
• Version 1.3: 2023-09-06
  Changes: Data collection, Database references, Derived calculations, Refinement description