5ZZ0

HUMAN GELSOLIN FROM RESIDUES GLU28 TO ARG161 WITH CALCIUM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.217 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Bonsai Gelsolin Survives Heat Induced Denaturation by Forming beta-Amyloids which Leach Out Functional Monomer.

Badmalia, M.D.Sharma, P.Yadav, S.P.S.Singh, S.Khatri, N.Garg, R.

(2018) Sci Rep 8: 12602-12602

  • DOI: 10.1038/s41598-018-30951-3
  • Primary Citation of Related Structures:  
    5ZZ0

  • PubMed Abstract: 
  • Here, we report that minimal functional gelsolin i.e. fragment 28-161 can display F-actin depolymerizing property even after heating the protein to 80 °C. Small angle X-ray scattering (SAXS) data analysis confirmed that under Ca 2+ -free conditions, 28-161 associates into monomer to dimer and tetramer, which later forms β-amyloids, but in presence of Ca 2+ , it forms dimers which proceed to non-characterizable aggregates ...

    Here, we report that minimal functional gelsolin i.e. fragment 28-161 can display F-actin depolymerizing property even after heating the protein to 80 °C. Small angle X-ray scattering (SAXS) data analysis confirmed that under Ca 2+ -free conditions, 28-161 associates into monomer to dimer and tetramer, which later forms β-amyloids, but in presence of Ca 2+ , it forms dimers which proceed to non-characterizable aggregates. The dimeric association also explained the observed decrease in ellipticity in circular dichroism experiments with increase in temperature. Importantly, SAXS data based models correlated well with our crystal structure of dimeric state of 28-161. Characterization of higher order association by electron microscopy, Congo red and ThioflavinT staining assays further confirmed that only in absence of Ca 2+ ions, heating transforms 28-161 into β-amyloids. Gel filtration and other experiments showed that β-amyloids keep leaching out the monomer, and the release rates could be enhanced by addition of L-Arg to the amyloids. F-actin depolymerization showed that addition of Ca 2+ ions to released monomer initiated the depolymerization activity. Overall, we propose a way to compose a supramolecular assembly which releases functional protein in sustained manner which can be applied for varied potentially therapeutic interventions.


    Organizational Affiliation

    Csir-Institute of Microbial Technology, Chandigarh, India. ashgang@imtech.res.in.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GelsolinB [auth A], A [auth G]134Homo sapiensMutation(s): 0 
Gene Names: GSN
UniProt & NIH Common Fund Data Resources
Find proteins for P06396 (Homo sapiens)
Explore P06396 
Go to UniProtKB:  P06396
PHAROS:  P06396
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PG0
Query on PG0

Download Ideal Coordinates CCD File 
E [auth G]2-(2-METHOXYETHOXY)ETHANOL
C5 H12 O3
SBASXUCJHJRPEV-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth G], D [auth G], F [auth A], G [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.217 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.393α = 90
b = 63.566β = 90
c = 98.136γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-06-05
    Type: Initial release