1R4A

Crystal Structure of GTP-bound ADP-ribosylation Factor Like Protein 1 (Arl1) and GRIP Domain of Golgin245 COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.246 
  • R-Value Observed: 0.251 

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This is version 1.2 of the entry. See complete history


Literature

Structural basis for recruitment of GRIP domain golgin-245 by small GTPase Arl1.

Wu, M.Lu, L.Hong, W.Song, H.

(2004) Nat Struct Mol Biol 11: 86-94

  • DOI: 10.1038/nsmb714
  • Primary Citation of Related Structures:  
    1R4A

  • PubMed Abstract: 
  • Recruitment of the GRIP domain golgins to the trans-Golgi network is mediated by Arl1, a member of the ARF/Arl small GTPase family, through interaction between their GRIP domains and Arl1-GTP. The crystal structure of Arl1-GTP in complex with the GRIP domain of golgin-245 shows that Arl1-GTP interacts with the GRIP domain predominantly in a hydrophobic manner, with the switch II region conferring the main recognition surface ...

    Recruitment of the GRIP domain golgins to the trans-Golgi network is mediated by Arl1, a member of the ARF/Arl small GTPase family, through interaction between their GRIP domains and Arl1-GTP. The crystal structure of Arl1-GTP in complex with the GRIP domain of golgin-245 shows that Arl1-GTP interacts with the GRIP domain predominantly in a hydrophobic manner, with the switch II region conferring the main recognition surface. The involvement of the switch and interswitch regions in the interaction between Arl1-GTP and GRIP accounts for the specificity of GRIP domain for Arl1-GTP. Mutations that abolished the Arl1-mediated Golgi localization of GRIP domain golgins have been mapped on the interface between Arl1-GTP and GRIP. Notably, the GRIP domain forms a homodimer in which each subunit interacts separately with one Arl1-GTP. Mutations disrupting the GRIP domain dimerization also abrogated its Golgi targeting, suggesting that the dimeric form of GRIP domain is a functional unit.


    Organizational Affiliation

    Laboratory of Macromolecular Structure, Institute of Molecular and Cell Biology, 30 Medical Drive, Singapore 117609.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ADP-ribosylation factor-like protein 1A,
C [auth B],
E [auth C],
G [auth D]
165Rattus norvegicusMutation(s): 0 
Gene Names: Arl1Arf7
UniProt
Find proteins for P61212 (Rattus norvegicus)
Explore P61212 
Go to UniProtKB:  P61212
Entity Groups  
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UniProt GroupP61212
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Golgi autoantigen, golgin subfamily A member 4B [auth E],
D [auth F],
F [auth G],
H
51Homo sapiensMutation(s): 0 
Gene Names: GOLGIN-245GOLGA4
UniProt & NIH Common Fund Data Resources
Find proteins for Q13439 (Homo sapiens)
Explore Q13439 
Go to UniProtKB:  Q13439
PHAROS:  Q13439
GTEx:  ENSG00000144674 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13439
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.246 
  • R-Value Observed: 0.251 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.083α = 118.11
b = 86.924β = 99.65
c = 86.246γ = 95.47
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
REFMACrefinement

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-01-13
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance