5U2M

Crystal structure of human NAMPT with A-1293201


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 

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This is version 1.3 of the entry. See complete history


Literature

Discovery and Characterization of Novel Nonsubstrate and Substrate NAMPT Inhibitors.

Wilsbacher, J.L.Cheng, M.Cheng, D.Trammell, S.A.J.Shi, Y.Guo, J.Koeniger, S.L.Kovar, P.J.He, Y.Selvaraju, S.Heyman, H.R.Sorensen, B.K.Clark, R.F.Hansen, T.M.Longenecker, K.L.Raich, D.Korepanova, A.V.Cepa, S.Towne, D.L.Abraham, V.C.Tang, H.Richardson, P.L.McLoughlin, S.M.Badagnani, I.Curtin, M.L.Michaelides, M.R.Maag, D.Buchanan, F.G.Chiang, G.G.Gao, W.Rosenberg, S.H.Brenner, C.Tse, C.

(2017) Mol Cancer Ther 16: 1236-1245

  • DOI: 10.1158/1535-7163.MCT-16-0819
  • Primary Citation of Related Structures:  
    5U2M, 5U2N

  • PubMed Abstract: 
  • Cancer cells are highly reliant on NAD + -dependent processes, including glucose metabolism, calcium signaling, DNA repair, and regulation of gene expression. Nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme for NAD + salvage from nicotinamide, has been investigated as a target for anticancer therapy ...

    Cancer cells are highly reliant on NAD + -dependent processes, including glucose metabolism, calcium signaling, DNA repair, and regulation of gene expression. Nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme for NAD + salvage from nicotinamide, has been investigated as a target for anticancer therapy. Known NAMPT inhibitors with potent cell activity are composed of a nitrogen-containing aromatic group, which is phosphoribosylated by the enzyme. Here, we identified two novel types of NAM-competitive NAMPT inhibitors, only one of which contains a modifiable, aromatic nitrogen that could be a phosphoribosyl acceptor. Both types of compound effectively deplete cellular NAD + , and subsequently ATP, and produce cell death when NAMPT is inhibited in cultured cells for more than 48 hours. Careful characterization of the kinetics of NAMPT inhibition in vivo allowed us to optimize dosing to produce sufficient NAD + depletion over time that resulted in efficacy in an HCT116 xenograft model. Our data demonstrate that direct phosphoribosylation of competitive inhibitors by the NAMPT enzyme is not required for potent in vitro cellular activity or in vivo antitumor efficacy. Mol Cancer Ther; 16(7); 1236-45. ©2017 AACR .


    Organizational Affiliation

    AbbVie Inc., North Chicago, Illinois.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Nicotinamide phosphoribosyltransferaseA, B477Homo sapiensMutation(s): 0 
Gene Names: NAMPTPBEFPBEF1
EC: 2.4.2.12
UniProt & NIH Common Fund Data Resources
Find proteins for P43490 (Homo sapiens)
Explore P43490 
Go to UniProtKB:  P43490
PHAROS:  P43490
Protein Feature View
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
7T7 BindingDB:  5U2M Ki: 24 (nM) from 1 assay(s)
IC50: min: 19.7, max: 34.2 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 60.978α = 90
b = 106.611β = 96.64
c = 83.122γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
MOLREPphasing
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
AutoPROCdata scaling
2016data reduction

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-28
    Type: Initial release
  • Version 1.1: 2017-07-19
    Changes: Database references
  • Version 1.2: 2017-11-22
    Changes: Refinement description
  • Version 1.3: 2018-03-21
    Changes: Data collection