1IK0

Solution Structure of Human IL-13

• PDB DOI: https://doi.org/10.2210/pdb1IK0/pdb
• BMRB: 5004

• Classification: CYTOKINE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2001-05-01 Released: 2002-05-01 
• Deposition Author(s): Moy, F.J., Diblasio, E., Wilhelm, J., Powers, R.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 30 
• Selection Criteria: structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy 

Literature

Solution structure of human IL-13 and implication for receptor binding.

Moy, F.J., Diblasio, E., Wilhelm, J., Powers, R.

(2001) J Mol Biol 310: 219-230

• PubMed: 11419948 
• DOI: https://doi.org/10.1006/jmbi.2001.4764
• Primary Citation of Related Structures:  
  1IJZ, 1IK0


• PubMed Abstract: 
  

  Interleukin-13 has been implicated as a key factor in asthma, allergy, atopy and inflammatory response, establishing the protein as a valuable therapeutic target. The high-resolution solution structure of human IL-13 has been determined by multidimensional NMR. The resulting structure is consistent with previous short-chain left-handed four-helix bundles, where a significant similarity in the folding topology between IL-13 and IL-4 was observed. IL-13 shares a significant overlap in biological function with IL-4, a result of the common alpha chain component (IL-4Ralpha) in their respective receptors. Based on the available structural and mutational data, an IL-13/IL-4Ralpha model and a sequential mechanism for forming the signaling heterodimer is proposed for IL-13.

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Organizational Affiliation: 

Department of Biological Chemistry,Wyeth Research, Cambridge, MA 02140, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 12.49 kDa 
• Atom Count: 871 
• Modelled Residue Count: 113 
• Deposited Residue Count: 113 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
INTERLEUKIN-13	A	113	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P35225 (Homo sapiens) Explore P35225  Go to UniProtKB:  P35225
PHAROS:  P35225 GTEx:  ENSG00000169194

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 30 
• Selection Criteria: structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-05-01 
Deposition Author(s): Moy, F.J., Diblasio, E., Wilhelm, J., Powers, R.

Revision History  

• Version 1.0: 2002-05-01
  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: 2024-11-20
  Changes: Data collection, Structure summary