Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13.46 kDa 
• Atom Count: 865 
• Modelled Residue Count: 110 
• Deposited Residue Count: 119 
• Unique protein chains: 1

 2MLK

Three-dimensional structure of the C-terminal DNA-binding domain of RstA protein from Klebsiella pneumoniae

• PDB DOI: 10.2210/pdb2MLK/pdb
• BMRB: 18200

• Classification: SIGNALING PROTEIN
• Organism(s): Klebsiella pneumoniae
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2014-03-02 Released: 2014-07-16 
• Deposition Author(s): Fang, P., Chen, S., Cheng, Y., Chang, C., Yu, T., Huang, T.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 150 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Structural dynamics of the two-component response regulator RstA in recognition of promoter DNA element.

Li, Y.C., Chang, C.K., Chang, C.F., Cheng, Y.H., Fang, P.J., Yu, T., Chen, S.C., Li, Y.C., Hsiao, C.D., Huang, T.H.

(2014) Nucleic Acids Res 42: 8777-8788

• PubMed: 24990372 
• DOI: 10.1093/nar/gku572
• Primary Citation of Related Structures:  
  2MLK, 4NHJ, 4NIC


• PubMed Abstract: 
  

The RstA/RstB system is a bacterial two-component regulatory system consisting of the membrane sensor, RstB and its cognate response regulator (RR) RstA. The RstA of Klebsiella pneumoniae (kpRstA) consists of an N-terminal receiver domain (RD, residues 1-119) and a C-terminal DNA-binding domain (DBD, residues 130-236). Phosphorylation of kpRstA induces dimerization, which allows two kpRstA DBDs to bind to a tandem repeat, called the RstA box, and regulate the expression of downstream genes. Here we report the solution and crystal structures of the free kpRstA RD, DBD and DBD/RstA box DNA complex. The structure of the kpRstA DBD/RstA box complex suggests that the two protomers interact with the RstA box in an asymmetric fashion. Equilibrium binding studies further reveal that the two protomers within the kpRstA dimer bind to the RstA box in a sequential manner. Taken together, our results suggest a binding model where dimerization of the kpRstA RDs provides the platform to allow the first kpRstA DBD protomer to anchor protein-DNA interaction, whereas the second protomer plays a key role in ensuring correct recognition of the RstA box.

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Related Citations: 

• (1)H, (13)C and (15)N resonance assignments of the C-terminal DNA-binding domain of RstA protein from Klebsiella pneumoniae.
  Chen, S.C., Chang, C.F., Fan, P.J., Cheng, Y.H., Yu, T., Huang, T.H.
  (2013) Biomol NMR Assign 7: 85

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Organizational Affiliation: 

Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan, ROC Genomics Research Center, Academia Sinica, Taipei 115, Taiwan, ROC Department of Physics, National Taiwan Normal University, Taipei 116, Taiwan, ROC [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RstA	A	119	Klebsiella pneumoniae	Mutation(s): 0  Gene Names: D364_07465

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 150 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-07-16 
Deposition Author(s): Fang, P., Chen, S., Cheng, Y., Chang, C., Yu, T., Huang, T.

Revision History  

• Version 1.0: 2014-07-16
  Type: Initial release
  
• Version 1.1: 2014-08-13
  Changes: Database references