1IRL

THE SOLUTION STRUCTURE OF THE F42A MUTANT OF HUMAN INTERLEUKIN 2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

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Literature

The solution structure of the F42A mutant of human interleukin 2.

Mott, H.R.Baines, B.S.Hall, R.M.Cooke, R.M.Driscoll, P.C.Weir, M.P.Campbell, I.D.

(1995) J Mol Biol 247: 979-994

  • DOI: 10.1006/jmbi.1994.0194
  • Primary Citation of Related Structures:  
    1IRL

  • PubMed Abstract: 
  • Interleukin 2 (IL-2) is one of the major cytokines produced by T lymphocytes in response to antigen. It is a potent growth and differentiation factor for several cell-types and is structurally related to the four-helix bundle family of cytokines. Mutation of residue Phe42 to Ala abolishes binding to the alpha chain of the tri-partite IL-2 receptor ...

    Interleukin 2 (IL-2) is one of the major cytokines produced by T lymphocytes in response to antigen. It is a potent growth and differentiation factor for several cell-types and is structurally related to the four-helix bundle family of cytokines. Mutation of residue Phe42 to Ala abolishes binding to the alpha chain of the tri-partite IL-2 receptor. The three-dimensional structure of the F42A mutant IL-2 has been calculated by two dimensional NMR methods and compared to a structure of wild-type IL-2 determined by X-ray crystallography. The overall topology of the two structures is the same. The main differences between the structures are within the ill-defined loops connecting the helices and the region of the protein that is believed to interact with the alpha-chain of the receptor. Thus, the mutation of Phe42 to Ala does not perturb the overall three-dimensional structure of IL-2, and does not appear to change the putative binding sites for the beta and gamma chains of the receptor. The structural differences observed in this mutant suggest that the replacement of Phe42 with Ala causes the re-orientation of neighbouring side-chains that are also involved in binding the alpha-chain of the receptor.


    Organizational Affiliation

    Glaxo Research & Development Ltd., Medicines Research Centre, Stevenage, Hertfordshire, U.K.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
INTERLEUKIN-2A133Homo sapiensMutation(s): 1 
Gene Names: IL2
UniProt & NIH Common Fund Data Resources
Find proteins for P60568 (Homo sapiens)
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Go to UniProtKB:  P60568
PHAROS:  P60568
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UniProt GroupP60568
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Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Derived calculations, Other