1P8X

The Calcium-Activated C-terminal half of gelsolin

• PDB DOI: https://doi.org/10.2210/pdb1P8X/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-05-08 Released: 2003-10-14 
• Deposition Author(s): Narayan, K., Burtnick, L.D., Robinson, R.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.245 
• R-Value Work: 0.205 
• R-Value Observed: 0.205 

Literature

Activation in isolation: Exposure of the actin-binding site in the C-terminal half of gelsolin does not require actin

Narayan, K., Chumnarnsilpa, S., Choe, H., Irobi, E., Urosev, D., Lindberg, U., Schutt, C.E., Burtnick, L.D., Robinson, R.C.

(2003) FEBS Lett 552: 82-85

• PubMed: 14527664 
• DOI: https://doi.org/10.1016/s0014-5793(03)00933-5
• Primary Citation of Related Structures:  
  1P8X


• PubMed Abstract: 
  

  Gelsolin requires activation to carry out its severing and capping activities on F-actin. Here, we present the structure of the isolated C-terminal half of gelsolin (G4-G6) at 2.0 A resolution in the presence of Ca(2+) ions. This structure completes a triptych of the states of activation of G4-G6 that illuminates its role in the function of gelsolin. Activated G4-G6 displays an open conformation, with the actin-binding site on G4 fully exposed and all three type-2 Ca(2+) sites occupied. Neither actin nor the type-l Ca(2+), which normally is sandwiched between actin and G4, is required to achieve this conformation.

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Organizational Affiliation: 

Department of Medical Biochemistry and Microbiology, Uppsala University, Box 582, 751 23 Uppsala, Sweden.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors.

Macromolecule Content

• Total Structure Weight: 113.65 kDa 
• Atom Count: 8,544 
• Modelled Residue Count: 965 
• Deposited Residue Count: 1,032 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Gelsolin precursor, plasma	A, B, C	344	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P06396 (Homo sapiens) Explore P06396  Go to UniProtKB:  P06396
PHAROS:  P06396 GTEx:  ENSG00000148180

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	D [auth A], E [auth A], F [auth A], G [auth B], H [auth B], I [auth B], J [auth C], K [auth C], L [auth C]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.245 
• R-Value Work: 0.205 
• R-Value Observed: 0.205 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 84.75	α = 90
b = 90.11	β = 90
c = 156.94	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing
CNS	refinement
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-10-14 
Deposition Author(s): Narayan, K., Burtnick, L.D., Robinson, R.C.

Revision History  

• Version 1.0: 2003-10-14
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-16
  Changes: Data collection, Database references, Derived calculations, Refinement description