2L29

Complex structure of E4 mutant human IGF2R domain 11 bound to IGF-II


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

An exon splice enhancer primes IGF2:IGF2R binding site structure and function evolution.

Williams, C.Hoppe, H.J.Rezgui, D.Strickland, M.Forbes, B.E.Grutzner, F.Frago, S.Ellis, R.Z.Wattana-Amorn, P.Prince, S.N.Zaccheo, O.J.Nolan, C.M.Mungall, A.J.Jones, E.Y.Crump, M.P.Hassan, A.B.

(2012) Science 338: 1209-1213

  • DOI: 10.1126/science.1228633
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Placental development and genomic imprinting coevolved with parental conflict over resource distribution to mammalian offspring. The imprinted genes IGF2 and IGF2R code for the growth promoter insulin-like growth factor 2 (IGF2) and its inhibitor, ma ...

    Placental development and genomic imprinting coevolved with parental conflict over resource distribution to mammalian offspring. The imprinted genes IGF2 and IGF2R code for the growth promoter insulin-like growth factor 2 (IGF2) and its inhibitor, mannose 6-phosphate (M6P)/IGF2 receptor (IGF2R), respectively. M6P/IGF2R of birds and fish do not recognize IGF2. In monotremes, which lack imprinting, IGF2 specifically bound M6P/IGF2R via a hydrophobic CD loop. We show that the DNA coding the CD loop in monotremes functions as an exon splice enhancer (ESE) and that structural evolution of binding site loops (AB, HI, FG) improved therian IGF2 affinity. We propose that ESE evolution led to the fortuitous acquisition of IGF2 binding by M6P/IGF2R that drew IGF2R into parental conflict; subsequent imprinting may then have accelerated affinity maturation.


    Organizational Affiliation

    Department of Organic and Biological Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Insulin-like growth factor 2 receptor variant
A
142Homo sapiensMutation(s): 3 
Gene Names: IGF2R (MPRI)
Find proteins for P11717 (Homo sapiens)
Go to Gene View: IGF2R
Go to UniProtKB:  P11717
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Insulin-like growth factor II
B
67Homo sapiensMutation(s): 0 
Gene Names: IGF2
Find proteins for P01344 (Homo sapiens)
Go to Gene View: IGF2
Go to UniProtKB:  P01344
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2L29 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-15
    Type: Initial release
  • Version 1.1: 2012-12-12
    Type: Database references