1IYM

RING-H2 finger domain of EL5


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 15 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

High Precision NMR Structure and Function of the RING-H2 Finger Domain of EL5, a Rice Protein Whose Expression Is Increased upon Exposure to Pathogen-derived Oligosaccharides

Katoh, S.Hong, C.Tsunoda, Y.Murata, K.Takai, R.Minami, E.Yamazaki, T.Katoh, E.

(2003) J.Biol.Chem. 278: 15341-15348

  • DOI: 10.1074/jbc.M210531200

  • PubMed Abstract: 
  • EL5, a RING-H2 finger protein, is rapidly induced by N-acetylchitooligosaccharides in rice cell. We expressed the EL5 RING-H2 finger domain in Escherichia coli and determined its structure in solution by NMR spectroscopy. The EL5 RING-H2 finger domai ...

    EL5, a RING-H2 finger protein, is rapidly induced by N-acetylchitooligosaccharides in rice cell. We expressed the EL5 RING-H2 finger domain in Escherichia coli and determined its structure in solution by NMR spectroscopy. The EL5 RING-H2 finger domain consists of two-stranded beta-sheets (beta1, Ala(147)-Phe(149); beta2, Gly(156)-His(158)), one alpha-helix (Cys(161)-Leu(166)), and two large N- and C-terminal loops. It is stabilized by two tetrahedrally coordinated zinc ions. This structure is similar to that of other RING finger domains of proteins of known function. From structural analogies, we inferred that the EL5 RING-H2 finger is a binding domain for ubiquitin-conjugating enzyme (E2). The binding site is probably formed by solvent-exposed hydrophobic residues of the N- and C-terminal loops and the alpha-helix. We demonstrated that the fusion protein with EL5-(96-181) and maltose-binding protein (MBP) was polyubiquitinated by incubation with ubiquitin, ubiquitin-activating enzyme (E1), and a rice E2 protein, OsUBC5b. This supported the idea that the EL5 RING finger domain is essential for ubiquitin-ligase activity of EL5. By NMR titration experiments, we identified residues that are critical for the interaction between the EL5 RING-H2 finger and OsUBC5b. We conclude that the RING-H2 finger domain of EL5 is the E2 binding site of EL5.


    Organizational Affiliation

    Biochemistry Department, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EL5
A
55Oryza sativa subsp. japonicaGene Names: EL5.1, EL5.2, EL5.3, EL5.4, EL5.5, EL5.6 (EL5, EL5, EL5, EL5, EL5, EL5)
EC: 6.3.2.-
Find proteins for Q9LRB7 (Oryza sativa subsp. japonica)
Go to UniProtKB:  Q9LRB7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 15 
  • Olderado: 1IYM Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-07-22
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance