3GLA | pdb_00003gla

Crystal Structure of the hspA from Xanthomonas axonopodis

• PDB DOI: https://doi.org/10.2210/pdb3GLA/pdb

• Classification: CHAPERONE
• Organism(s): Xanthomonas citri
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-03-11 Released: 2009-03-24 
• Deposition Author(s): Hilario, E., Medrano, F.J., Bertolini, M.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Work: 
  0.184 (Depositor), 0.179 (DCC) 
• R-Value Observed: 
  0.184 (Depositor) 

Starting Model: experimental

Literature

Crystallization and preliminary X-ray diffraction analysis of XAC1151, a small heat-shock protein from Xanthomonas axonopodis pv. citri belonging to the alpha-crystallin family

Hilario, E., Teixeira, E.C., Pedroso, G.A., Bertolini, M.C., Medrano, F.J.

(2006) Acta Crystallogr Sect F Struct Biol Cryst Commun 62: 446-448

• PubMed: 16682772 
• DOI: https://doi.org/10.1107/S174430910601219X
• Primary Citation Related Structures: 
  3GLA


• PubMed Abstract: 
  

  The hspA gene (XAC1151) from Xanthomonas axonopodis pv. citri encodes a protein of 158 amino acids that belongs to the small heat-shock protein (sHSP) family of proteins. These proteins function as molecular chaperones by preventing protein aggregation. The protein was crystallized using the sitting-drop vapour-diffusion method in the presence of ammonium phosphate. X-ray diffraction data were collected to 1.65 angstroms resolution using a synchrotron-radiation source. The crystal belongs to the rhombohedral space group R3, with unit-cell parameters a = b = 128.7, c = 55.3 angstroms. The crystal structure was solved by molecular-replacement methods. Structure refinement is in progress.

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Organizational Affiliation: 
• Departamento de Bioquímica e Tecnologia Química, Instituto de Química, Universidade Estadual Paulista, Araraquara-SP, Brazil.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 22.81 kDa 
• Atom Count: 1,886 
• Modeled Residue Count: 196 
• Deposited Residue Count: 200 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Low molecular weight heat shock protein	A, B	100	Xanthomonas citri	Mutation(s): 0  Gene Names: hspA

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	C [auth A], D [auth B]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Work:  0.184 (Depositor), 0.179 (DCC) 
• R-Value Observed: 0.184 (Depositor) 

Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 128.674	α = 90
b = 128.674	β = 90
c = 55.251	γ = 120

Software Package:

Software Name	Purpose
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
MOSFLM	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-03-24 
Deposition Author(s): Hilario, E., Medrano, F.J., Bertolini, M.C.

Revision History  

• Version 1.0: 2009-03-24
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-09-06
  Changes: Data collection, Database references, Derived calculations, Refinement description