1JXS | pdb_00001jxs

Solution Structure of the DNA-Binding Domain of Interleukin Enhancer Binding Factor

• PDB DOI: https://doi.org/10.2210/pdb1JXS/pdb
• BMRB: 4829

• Classification: DNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2001-09-08 Released: 2003-03-11 
• Deposition Author(s): Chuang, W.J., Liu, P.P., Li, C., Hsieh, Y.H., Chen, S.W., Chen, S.H., Jeng, W.Y.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 

Literature

Solution structure of the DNA-binding domain of interleukin enhancer binding factor 1 (FOXK1a)

Liu, P.P., Chen, Y.C., Li, C., Hsieh, Y.H., Chen, S.W., Chen, S.H., Jeng, W.Y., Chuang, W.J.

(2002) Proteins 49: 543-553

• PubMed: 12402362 
• DOI: https://doi.org/10.1002/prot.10227
• Primary Citation Related Structures: 
  1JXS


• PubMed Abstract: 
  

  Interleukin enhancer binding factor (ILF) binds to the interleukin-2 (IL-2) promoter and regulates IL-2 gene expression. In this study, the 3D structure of the DNA-binding domain of ILF was determined by multidimensional NMR spectroscopy. NMR structure analysis revealed that the DNA-binding domain of ILF is a new member of the winged helix/forkhead family, and that its wing 2 contains an extra alpha-helix. This is the first study to report the presence of a C-terminal alpha-helix in place of a typical wing 2 in a member of this family. This structural difference may be responsible for the different DNA-binding specificity of ILF compared to other winged helix/forkhead proteins. Our deletion studies of the fragments of ILF also suggest that the C-terminal region plays a regulatory role in DNA binding.

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Organizational Affiliation: 
• Department of Biochemistry, National Cheng Kung University College of Medicine, Tainan 701, Taiwan.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 11.56 kDa 
• Atom Count: 818 
• Modeled Residue Count: 98 
• Deposited Residue Count: 98 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
interleukin enhancer binding factor	A	98	Homo sapiens	Mutation(s): 0  Gene Names: ILF-1
UniProt & NIH Common Fund Data Resources
Find proteins for Q01167 (Homo sapiens) Explore Q01167  Go to UniProtKB:  Q01167
PHAROS:  Q01167 GTEx:  ENSG00000141568

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-03-11 
Deposition Author(s): Chuang, W.J., Liu, P.P., Li, C., Hsieh, Y.H., Chen, S.W., Chen, S.H., Jeng, W.Y.

Revision History  

• Version 1.0: 2003-03-11
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-05-29
  Changes: Data collection