6HVI

Human PFKFB3 in complex with a N-Aryl 6-Aminoquinoxaline inhibitor 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Discovery and Structure-Activity Relationships of N-Aryl 6-Aminoquinoxalines as Potent PFKFB3 Kinase Inhibitors.

Boutard, N.Bialas, A.Sabiniarz, A.Guzik, P.Banaszak, K.Biela, A.Bien, M.Buda, A.Bugaj, B.Cieluch, E.Cierpich, A.Dudek, L.Eggenweiler, H.M.Fogt, J.Gaik, M.Gondela, A.Jakubiec, K.Jurzak, M.Kitlinska, A.Kowalczyk, P.Kujawa, M.Kwiecinska, K.Les, M.Lindemann, R.Maciuszek, M.Mikulski, M.Niedziejko, P.Obara, A.Pawlik, H.Rzymski, T.Sieprawska-Lupa, M.Sowinska, M.Szeremeta-Spisak, J.Stachowicz, A.Tomczyk, M.M.Wiklik, K.Wloszczak, L.Ziemianska, S.Zarebski, A.Brzozka, K.Nowak, M.Fabritius, C.H.

(2019) ChemMedChem 14: 169-181

  • DOI: https://doi.org/10.1002/cmdc.201800569
  • Primary Citation of Related Structures:  
    6HVH, 6HVI, 6HVJ

  • PubMed Abstract: 

    Energy and biomass production in cancer cells are largely supported by aerobic glycolysis in what is called the Warburg effect. The process is regulated by key enzymes, among which phosphofructokinase PFK-2 plays a significant role by producing fructose-2,6-biphosphate; the most potent activator of the glycolysis rate-limiting step performed by phosphofructokinase PFK-1. Herein, the synthesis, biological evaluation and structure-activity relationship of novel inhibitors of 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 (PFKFB3), which is the ubiquitous and hypoxia-induced isoform of PFK-2, are reported. X-ray crystallography and docking were instrumental in the design and optimisation of a series of N-aryl 6-aminoquinoxalines. The most potent representative, N-(4-methanesulfonylpyridin-3-yl)-8-(3-methyl-1-benzothiophen-5-yl)quinoxalin-6-amine, displayed an IC 50 of 14 nm for the target and an IC 50 of 0.49 μm for fructose-2,6-biphosphate production in human colon carcinoma HCT116 cells. This work provides a new entry in the field of PFKFB3 inhibitors with potential for development in oncology.


  • Organizational Affiliation

    Selvita S.A., Bobrzyńskiego 14, 30-348, Kraków, Poland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3520Homo sapiensMutation(s): 0 
Gene Names: PFKFB3
EC: 2.7.1.105 (PDB Primary Data), 3.1.3.46 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q16875 (Homo sapiens)
Explore Q16875 
Go to UniProtKB:  Q16875
PHAROS:  Q16875
GTEx:  ENSG00000170525 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16875
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
GV5
Query on GV5

Download Ideal Coordinates CCD File 
B [auth A]8-[3-(dimethylamino)phenyl]-~{N}-(4-methylsulfonylpyridin-3-yl)quinoxalin-6-amine
C22 H21 N5 O2 S
MGSNILVOZHNEMV-UHFFFAOYSA-N
F6P
Query on F6P

Download Ideal Coordinates CCD File 
D [auth A]6-O-phosphono-beta-D-fructofuranose
C6 H13 O9 P
BGWGXPAPYGQALX-ARQDHWQXSA-N
FLC
Query on FLC

Download Ideal Coordinates CCD File 
E [auth A]CITRATE ANION
C6 H5 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-K
POP
Query on POP

Download Ideal Coordinates CCD File 
C [auth A]PYROPHOSPHATE 2-
H2 O7 P2
XPPKVPWEQAFLFU-UHFFFAOYSA-L
DMS
Query on DMS

Download Ideal Coordinates CCD File 
F [auth A]DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
GV5 Binding MOAD:  6HVI IC50: 380 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.036α = 90
b = 103.036β = 90
c = 255.012γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Regional Development FundPOIG.01.04.00-12-120/12-00

Revision History  (Full details and data files)

  • Version 1.0: 2018-11-14
    Type: Initial release
  • Version 1.1: 2019-01-16
    Changes: Data collection, Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary