5E6O

Crystal structure of C. elegans LGG-2 bound to an AIM/LIR motif


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.177 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural Basis of the Differential Function of the Two C. elegans Atg8 Homologs, LGG-1 and LGG-2, in Autophagy

Wu, F.Watanabe, Y.Guo, X.Y.Qi, X.Wang, P.Zhao, H.Y.Wang, Z.Fujioka, Y.Zhang, H.Ren, J.Q.Fang, T.C.Shen, Y.X.Feng, W.Hu, J.J.Noda, N.N.Zhang, H.

(2015) Mol.Cell 60: 914-929

  • DOI: 10.1016/j.molcel.2015.11.019
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Multicellular organisms have multiple homologs of the yeast ATG8 gene, but the differential roles of these homologs in autophagy during development remain largely unknown. Here we investigated structure/function relationships in the two C. elegans At ...

    Multicellular organisms have multiple homologs of the yeast ATG8 gene, but the differential roles of these homologs in autophagy during development remain largely unknown. Here we investigated structure/function relationships in the two C. elegans Atg8 homologs, LGG-1 and LGG-2. lgg-1 is essential for degradation of protein aggregates, while lgg-2 has cargo-specific and developmental-stage-specific roles in aggregate degradation. Crystallography revealed that the N-terminal tails of LGG-1 and LGG-2 adopt the closed and open form, respectively. LGG-1 and LGG-2 interact differentially with autophagy substrates and Atg proteins, many of which carry a LIR motif. LGG-1 and LGG-2 have structurally distinct substrate binding pockets that prefer different residues in the interacting LIR motif, thus influencing binding specificity. Lipidated LGG-1 and LGG-2 possess distinct membrane tethering and fusion activities, which may result from the N-terminal differences. Our study reveals the differential function of two ATG8 homologs in autophagy during C. elegans development.


    Organizational Affiliation

    School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, P.R. China.,Institute of Microbial Chemistry, Tokyo 141-0021, Japan. Electronic address: nn@bikaken.or.jp.,College of Life Sciences, Nankai University, Tianjin 300071, P.R. China.,National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, P.R. China. Electronic address: hongzhang@sun5.ibp.ac.cn.,Institute of Microbial Chemistry, Tokyo 141-0021, Japan.,National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, P.R. China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein lgg-2
A, B, C, D
118Caenorhabditis elegansMutation(s): 0 
Gene Names: lgg-2
Find proteins for Q23536 (Caenorhabditis elegans)
Go to UniProtKB:  Q23536
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TRP-GLU-GLU-LEU
E, F, G, H
4N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.177 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 49.933α = 90.00
b = 62.351β = 109.54
c = 67.599γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
HKL-3000data collection
PHENIXrefinement
HKL-3000data scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-01-06
    Type: Initial release