2KIG

A PH domain within OCRL bridges clathrin mediated membrane trafficking to phosphoinositide metabolism


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

A PH domain within OCRL bridges clathrin-mediated membrane trafficking to phosphoinositide metabolism.

Mao, Y.Balkin, D.M.Zoncu, R.Erdmann, K.S.Tomasini, L.Hu, F.Jin, M.M.Hodsdon, M.E.De Camilli, P.

(2009) Embo J. 28: 1831-1842

  • DOI: 10.1038/emboj.2009.155
  • Primary Citation of Related Structures:  2KIE

  • PubMed Abstract: 
  • OCRL, whose mutations are responsible for Lowe syndrome and Dent disease, and INPP5B are two similar proteins comprising a central inositol 5-phosphatase domain followed by an ASH and a RhoGAP-like domain. Their divergent NH2-terminal portions remain ...

    OCRL, whose mutations are responsible for Lowe syndrome and Dent disease, and INPP5B are two similar proteins comprising a central inositol 5-phosphatase domain followed by an ASH and a RhoGAP-like domain. Their divergent NH2-terminal portions remain uncharacterized. We show that the NH2-terminal region of OCRL, but not of INPP5B, binds clathrin heavy chain. OCRL, which in contrast to INPP5B visits late stage endocytic clathrin-coated pits, was earlier shown to contain another binding site for clathrin in its COOH-terminal region. NMR structure determination further reveals that despite their primary sequence dissimilarity, the NH2-terminal portions of both OCRL and INPP5B contain a PH domain. The novel clathrin-binding site in OCRL maps to an unusual clathrin-box motif located in a loop of the PH domain, whose mutations reduce recruitment efficiency of OCRL to coated pits. These findings suggest an evolutionary pressure for a specialized function of OCRL in bridging phosphoinositide metabolism to clathrin-dependent membrane trafficking.


    Organizational Affiliation

    Department of Cell Biology, Howard Hughes Medical Institute, Yale University, New Haven, CT 06511, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Inositol polyphosphate 5-phosphatase II isoform
A
161Mus musculusGene Names: Inpp5b
EC: 3.1.3.36
Find proteins for Q8K337 (Mus musculus)
Go to UniProtKB:  Q8K337
Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance