2K6S

Structure of Rab11-FIP2 C-terminal Coiled-coil Domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 30 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Disorder and structure in the Rab11 binding domain of Rab11 family interacting protein 2.

Wei, J.Liu, Y.Bose, K.Henry, G.D.Baleja, J.D.

(2009) Biochemistry 48: 549-557

  • DOI: 10.1021/bi8020197

  • PubMed Abstract: 
  • Rab11 plays a central role in plasma membrane recycling which returns cellular receptors for reuse at the cell surface. A recently identified family of Rab11 interacting proteins (FIP) includes FIP2. The C-terminal region of FIP2 is essential for col ...

    Rab11 plays a central role in plasma membrane recycling which returns cellular receptors for reuse at the cell surface. A recently identified family of Rab11 interacting proteins (FIP) includes FIP2. The C-terminal region of FIP2 is essential for colocalization with Rab11 on early endosomes and for enabling formation of higher-order oligomers. Rab11 binding and oligomerization of FIP2 are separable. Here we have determined the three-dimensional structure of the 40-residue coiled-coil oligomerization domain of FIP2 in the absence of Rab11 using NMR methods. The N-terminal half showed strong NOE cross-peaks and well-dispersed NMR resonances, whereas the C-terminal half had fewer NOE cross-peaks and less chemical shift dispersion. The 10 C-terminal residues were mostly disordered. The final structures of the dimer had favorable Ramachandran angles and a root-mean-square deviation of 0.59 +/- 0.13 A over superimposed backbone residues. The structure allows a comparison to a structure of FIP2 in complex with Rab11 that was determined crystallographically. In complex with Rab11, the C-terminal residues are not disordered but have a helical structure that predicts residual dipolar coupling constants that are incompatible with those measured on the unbound FIP2. In both structures, a histidine residue is found at the normally hydrophobic position of the heptad repeat of the coiled coil, and here we show its ionization destabilizes the coiled-coil structure. Together, these data allow us to build a model in which the binding of FIP family proteins to Rab11 can be described in terms of conformational changes and that suggests new modes of regulation.


    Organizational Affiliation

    Department of Biochemistry, Tufts University School of Medicine, Boston, Massachusetts 02111, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Rab11fip2 protein
A, B
41Homo sapiensGene Names: RAB11FIP2 (KIAA0941)
Find proteins for Q7L804 (Homo sapiens)
Go to Gene View: RAB11FIP2
Go to UniProtKB:  Q7L804
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 30 
  • Selection Criteria: all calculated structures submitted 
  • Olderado: 2K6S Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance