4HWI

Crystal structure of ATBAG1 in complex with HSP70

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 

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Literature

Structural insight into plant programmed cell death mediated by BAG proteins in Arabidopsis thaliana.

Fang, S., Li, L., Cui, B., Men, S., Shen, Y., Yang, X.

(2013) Acta Crystallogr D Biol Crystallogr 69: 934-945

  • DOI: 10.1107/S0907444913003624
  • Primary Citation of Related Structures:  
    4HWC, 4HWD, 4HWF, 4HWH, 4HWI

  • PubMed Abstract: 

    • The recently identified plant Bcl-2-associated athanogene (BAG) family plays an extensive role in plant programmed cell death (PCD) processes ranging from growth and development to stress responses and even cell death. In the Arabidopsis thaliana BAG (AtBAG) protein family, four members (AtBAG1-4) have a domain organization similar to that of mammalian BAG proteins ...

    The recently identified plant Bcl-2-associated athanogene (BAG) family plays an extensive role in plant programmed cell death (PCD) processes ranging from growth and development to stress responses and even cell death. In the Arabidopsis thaliana BAG (AtBAG) protein family, four members (AtBAG1-4) have a domain organization similar to that of mammalian BAG proteins. Here, crystal structures of the BAG domains (BDs) of AtBAG1-4 have been determined; they have high homology and adopt a structure comprising three short parallel α-helices, similar to some mammalian BAG proteins. The crystal structure of a complex of the AtBAG1 ubiquitin-like domain and BAG domain (UBD) with the Hsc70 nucleotide-binding domain (NBD) was also determined. The binding of the AtBAG1 BD to the Hsc70 NBD induces conformational change of the Hsc70 NBD to the open state and reduces the affinity of the NBD for ADP. In vivo studies showed that bag2-1 mutant plants are larger than wild-type plants when growing under normal conditions, indicating that the AtBAG proteins might regulate plant PCD and confer tolerance to stresses in plants. These structural and functional analyses indicate that the AtBAG proteins function as nucleotide-exchange factors for Hsp70/Hsc70 in A. thaliana and that the mechanism of regulation of chaperone-mediated protein folding is conserved in plants.

    Organizational Affiliation: 

    State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, People's Republic of China.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock cognate 71 kDa proteinA377Homo sapiensMutation(s): 0 
Gene Names: HSC70, HSP73, HSPA10, HSPA8
EC: 3.6.4.10
UniProt & NIH Common Fund Data Resources
Find proteins for P11142 (Homo sapiens)
Explore P11142 
Go to UniProtKB:  P11142
PHAROS:  P11142
GTEx:  ENSG00000109971 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11142
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
BAG family molecular chaperone regulator 1B178Arabidopsis thalianaMutation(s): 0 
Gene Names: At5g52060, BAG1, MSG15.15
UniProt
Find proteins for Q0WUQ1 (Arabidopsis thaliana)
Explore Q0WUQ1 
Go to UniProtKB:  Q0WUQ1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ0WUQ1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.928α = 90
b = 87.36β = 109.18
c = 65.07γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2012-11-07 
  • Released Date: 2013-05-29 
    • Deposition Author(s): Shen, Y., Fang, S.

Revision History  (Full details and data files)

  • Version 1.0: 2013-05-29
    Type: Initial release
  • Version 1.1: 2013-06-19
    Changes: Database references