5TQZ

Frutapin complexed with alpha-D-glucose


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.149 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Frutapin, a lectin fromArtocarpus incisa(breadfruit): cloning, expression and molecular insights.

de Sousa, F.D.da Silva, B.B.Furtado, G.P.Carneiro, I.S.Lobo, M.D.P.Guan, Y.Guo, J.Coker, A.R.Lourenzoni, M.R.Guedes, M.I.F.Owen, J.S.Abraham, D.J.Monteiro-Moreira, A.C.O.Moreira, R.A.

(2017) Biosci. Rep. 37: --

  • DOI: 10.1042/BSR20170969
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Artocarpus incisa (breadfruit) seeds contain three different lectins (Frutalin, Frutapin (FTP) and Frutackin) with distinct carbohydrate specificities. The most abundant lectin is Frutalin, an α-D-galactose-specific carbohydrate-binding glycoprotein ...

    Artocarpus incisa (breadfruit) seeds contain three different lectins (Frutalin, Frutapin (FTP) and Frutackin) with distinct carbohydrate specificities. The most abundant lectin is Frutalin, an α-D-galactose-specific carbohydrate-binding glycoprotein with antitumour properties and potential for tumour biomarker discovery as already reported. FTP is the second most abundant, but proved difficult to purify with very low yields and contamination with Frutalin frustrating its characterization. Here, we report for the first time high-level production and isolation of biologically active recombinant FTP in Escherichia coli BL21, optimizing conditions with the best set yielding >40 mg/l culture of soluble active FTP. The minimal concentration for agglutination of red blood cells was 62.5 µg/ml of FTP, a process effectively inhibited by mannose. Apo-FTP, FTP-mannose and FTP-glucose crystals were obtained, and they diffracted X-rays to a resolution of 1.58 (P212121), 1.70 (P3121) and 1.60 (P3121) Å respectively. The best solution showed four monomers per asymmetric unit. Molecular dynamics (MD) simulation suggested that FTP displays higher affinity for mannose than glucose. Cell studies revealed that FTP was non-cytotoxic to cultured mouse fibroblast 3T3 cells below 0.5 mg/ml and was also capable of stimulating cell migration at 50 µg/ml. In conclusion, our optimized expression system allowed high amounts of correctly folded soluble FTP to be isolated. This recombinant bioactive lectin will now be tested in future studies for therapeutic potential; for example in wound healing and tissue regeneration.


    Organizational Affiliation

    Northeast Biotechnology Network (RENORBIO), Centre of Experimental Biology (Nubex), University of Fortaleza (UNIFOR), CEP 60811-905, Fortaleza-Ceará, Brazil fdsousa@yahoo.com.br.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Frutapin
A, B, C, D
150N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GLC
Query on GLC

Download SDF File 
Download CCD File 
A, B, C, D
ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.149 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 74.023α = 90.00
b = 74.023β = 90.00
c = 185.522γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
DIALSdata reduction
PHASERphasing
Aimlessdata scaling
DIALSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Brazilian National Council for Scientific and Technological DevelopmentBrazil201016/2015-0

Revision History 

  • Version 1.0: 2017-07-19
    Type: Initial release
  • Version 1.1: 2017-08-02
    Type: Database references
  • Version 1.2: 2017-11-22
    Type: Refinement description
  • Version 1.3: 2018-03-28
    Type: Data collection, Database references
  • Version 1.4: 2019-04-17
    Type: Author supporting evidence, Data collection