1I5H

SOLUTION STRUCTURE OF THE RNEDD4 WWIII DOMAIN-RENAL BP2 PEPTIDE COMPLEX


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 170 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of a Nedd4 WW domain-ENaC peptide complex.

Kanelis, V.Rotin, D.Forman-Kay, J.D.

(2001) Nat.Struct.Mol.Biol. 8: 407-412

  • DOI: 10.1038/87562

  • PubMed Abstract: 
  • Nedd4 is a ubiquitin protein ligase composed of a C2 domain, three (or four) WW domains and a ubiquitin ligase Hect domain. Nedd4 was demonstrated to bind the epithelial sodium channel (alphabetagammaENaC), by association of its WW domains with PY mo ...

    Nedd4 is a ubiquitin protein ligase composed of a C2 domain, three (or four) WW domains and a ubiquitin ligase Hect domain. Nedd4 was demonstrated to bind the epithelial sodium channel (alphabetagammaENaC), by association of its WW domains with PY motifs (XPPXY) present in each ENaC subunit, and to regulate the cell surface stability of the channel. The PY motif of betaENaC is deleted or mutated in Liddle syndrome, a hereditary form of hypertension caused by elevated ENaC activity. Here we report the solution structure of the third WW domain of Nedd4 complexed to the PY motif-containing region of betaENaC (TLPIPGTPPPNYDSL, referred to as betaP2). A polyproline type II helical conformation is adopted by the PPPN sequence. Unexpectedly, the C-terminal sequence YDSL forms a helical turn and both the tyrosine and the C-terminal leucine contact the WW domain. This is unlike other proline-rich peptides complexed to WW domains, which bind in an extended conformation and lack molecular interactions with residues C-terminal to the tyrosine or the structurally equivalent residue in non-PY motif WW domain targets. The Nedd4 WW domain-ENaC betaP2 peptide structure expands our understanding of the mechanisms involved in WW domain-ligand recognition and the molecular basis of Liddle syndrome.


    Organizational Affiliation

    Programmes in Structural Biology and Biochemistry, Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
UBIQUITIN LIGASE NEDD4
W
50Rattus norvegicusMutation(s): 0 
Gene Names: Nedd4 (Nedd4a)
EC: 2.3.2.26
Find proteins for Q62940 (Rattus norvegicus)
Go to UniProtKB:  Q62940
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
AMILORIDE-SENSITIVE SODIUM CHANNEL BETA-SUBUNIT
B
17Rattus norvegicusMutation(s): 0 
Gene Names: Scnn1b
Find proteins for P37090 (Rattus norvegicus)
Go to UniProtKB:  P37090
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 170 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1I5H Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-05-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance