Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 139.46 kDa 
• Atom Count: 9345 
• Residue Count: 1156 
• Unique protein chains: 1

6QS9

Bovine Serum Albumin in complex with Ketoprofen

• DOI: 10.2210/pdb6QS9/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Bos taurus
• Expression System: Bos taurus
• Mutation(s): No 


• Deposited: 2019-02-20 Released: 2019-09-11 
• Deposition Author(s): Donini, S., Parisini, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.272 
• R-Value Work: 0.215 
• R-Value Observed: 0.218 

Literature

Biohybrid Electrospun Membrane for the Filtration of Ketoprofen Drug from Water.

Castagna, R., Donini, S., Colnago, P., Serafini, A., Parisini, E., Bertarelli, C.

(2019) ACS Omega 4: 13270-13278

• PubMed: 31460455 
• DOI: 10.1021/acsomega.9b01442
• Primary Citation of Related Structures:  
  6QS9


• PubMed Abstract: 
  

A current challenge in materials science and biotechnology is to express a specific and controlled functionality on the large interfacial area of a nanostructured material to create smart biohybrid systems for targeted applications. Here, we report on a biohybrid system featuring poly(vinyl alcohol) as the supporting synthetic polymer and bovine serum albumin as the biofunctional element. The optimal processing conditions to produce these self-standing composite membranes are determined, and the composition and distribution of the bioactive agent within the polymeric matrices are analyzed. A post-processing cross-linking using glutaraldehyde enables this functional membrane to be used as a chemical filter in aqueous environments. By demonstrating that our mats can remove large amounts of ketoprofen from water, we show that the combination of a BSA-induced biofunctionality with a nanostructured fibrous material allows for the development of an efficient biohybrid filtering device for the large and widely used family of nonsteroidal anti-inflammatory drugs (NSAIDs). The crystal structure of the complex between BSA and ketoprofen is determined for the first time and confirms the interaction between the two species.

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Organizational Affiliation: 

Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133 Milano, Italy.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serum albumin	A, B	607	Bos taurus	Mutation(s): 0  Gene Names: ALB
Find proteins for P02769 (Bos taurus) Explore P02769  Go to UniProtKB:  P02769

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
JGE	A, B	(R)-Ketoprofen C16 H14 O3 DKYWVDODHFEZIM-LLVKDONJSA-N
CA	A, B	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.272 
• R-Value Work: 0.215 
• R-Value Observed: 0.218 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 212.486	α = 90
b = 44.374	β = 113.24
c = 142.715	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2019-02-20 
• Released Date: 2019-09-11 
Deposition Author(s): Donini, S., Parisini, E.

Revision History 

• Version 1.0: 2019-09-11
  Type: Initial release
  
• Version 1.1: 2019-10-09
  Changes: Advisory, Data collection, Derived calculations
• Version 1.2: 2019-12-25
  Changes: Database references