2MFR

Solution structure of the transmembrane domain of the insulin receptor in micelles


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 56 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report



Literature

Solution structure of the transmembrane domain of the insulin receptor in detergent micelles

Li, Q.Wong, Y.L.Kang, C.

(2014) Biochim Biophys Acta 1838: 1313-1321

  • DOI: 10.1016/j.bbamem.2014.01.005
  • Primary Citation of Related Structures:  
    2MFR

  • PubMed Abstract: 
  • The insulin receptor (IR) binds insulin and plays important roles in glucose homeostasis by regulating the tyrosine kinase activity at its C-terminus. Its transmembrane domain (TMD) is shown to be important for transferring conformational changes ind ...

    The insulin receptor (IR) binds insulin and plays important roles in glucose homeostasis by regulating the tyrosine kinase activity at its C-terminus. Its transmembrane domain (TMD) is shown to be important for transferring conformational changes induced by insulin across the cell membrane to regulate kinase activity. In this study, a construct IR(940-988) containing the TMD was expressed and purified for structural studies. Its solution structure in dodecylphosphocholine (DPC) micelles was determined. The sequence containing residues L962 to Y976 of the TMD of the IR in micelles adopts a well-defined helical structure with a kink formed by glycine and proline residues present at its N-terminus, which might be important for its function. Paramagnetic relaxation enhancement (PRE) and relaxation experimental results suggest that residues following the TMD are flexible and expose to aqueous solution. Although purified IR(940-988) in micelles existed mainly as a monomeric form verified by gel filtration and relaxation analysis, cross-linking study suggests that it may form a dimer or oligomers under micelle conditions.


    Organizational Affiliation

    Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), Singapore 138669 Singapore. Electronic address: cbkang@etc.a-star.edu.sg.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptorA57Homo sapiensMutation(s): 0 
Gene Names: INSR
EC: 2.7.10.1
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Receptor Tyrosine Kinase (RTK) Family
Protein: 
Insulin receptor TM domain (AAs 940-980)
Find proteins for P06213 (Homo sapiens)
Explore P06213 
Go to UniProtKB:  P06213
NIH Common Fund Data Resources
PHAROS  P06213
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 56 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2MFR Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-04-02
    Type: Initial release