2FGH

ATP bound gelsolin

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.243 

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This is version 1.3 of the entry. See complete history. 


Literature

The structure of gelsolin bound to ATP

Urosev, D., Ma, Q., Tan, A.L.C., Robinson, R.C., Burtnick, L.D.

(2006) J Mol Biol 357: 765-772

  • DOI: 10.1016/j.jmb.2006.01.027
  • Primary Citation of Related Structures:  
    2FGH

  • PubMed Abstract: 

    • Calcium activation of the actin-modifying properties of gelsolin is sensitive to ATP. Here, we show that soaking calcium-free gelsolin crystals in ATP-containing media results in ATP occupying a site that spans the two pseudosymmetrical halves of the protein ...

    Calcium activation of the actin-modifying properties of gelsolin is sensitive to ATP. Here, we show that soaking calcium-free gelsolin crystals in ATP-containing media results in ATP occupying a site that spans the two pseudosymmetrical halves of the protein. ATP binding involves numerous polar and hydrophobic contacts and is identical for the two copies of gelsolin related by non-crystallographic symmetry within the crystal. The gamma-phosphate of ATP participates in several charge-charge interactions consistent with the preference of gelsolin for ATP, as a binding partner, over ADP. In addition, disruption of the ATP-binding site through Ca2+ activation of gelsolin reveals why ATP binds more tightly to the inactive molecule, and suggests how the binding of ATP may modulate the sensitivity of gelsolin to calcium ions. Similarities between the ATP and PIP2 interactions with the C-terminal half of gelsolin are evident from their overlapping binding sites and in that both molecules bind more tightly in the absence of calcium ions. We propose a model for how PIP2 may bind to calcium-free gelsolin based on the ATP-binding site.

    Organizational Affiliation: 

    Department of Chemistry and Centre for Blood Research, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
gelsolinA, B731Equus caballusMutation(s): 0 
Gene Names: GSN
UniProt
Find proteins for Q28372 (Equus caballus)
Explore Q28372 
Go to UniProtKB:  Q28372
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ28372
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP
Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]		ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
ATP PDBBind:  2FGH Kd: 280 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.243 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 167.344α = 90
b = 167.344β = 90
c = 149.883γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing
REFMACrefinement
CCP4data scaling

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-04-18
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-12-20
    Changes: Data collection, Database references