5E6O

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.181 

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:  
    5AZF, 5AZG, 5AZH, 5E6N, 5E6O

  • 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 Atg8 homologs, LGG-1 and LGG-2 ...

    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

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, P.R. China. Electronic address: hongzhang@sun5.ibp.ac.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein lgg-2A, B, C, D118Caenorhabditis elegansMutation(s): 0 
Gene Names: lgg-2ZK593.6
UniProt
Find proteins for Q23536 (Caenorhabditis elegans)
Explore Q23536 
Go to UniProtKB:  Q23536
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TRP-GLU-GLU-LEUE, F, G, H4Scheffersomyces stipitisMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.181 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.933α = 90
b = 62.351β = 109.54
c = 67.599γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data collection
HKL-3000data scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

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