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4JR5

Structure-based Identification of Ureas as Novel Nicotinamide Phosphoribosyltransferase (Nampt) Inhibitors

Summary for 4JR5
Entry DOI10.2210/pdb4jr5/pdb
Related4JNM 4KFN 4KFO
DescriptorNicotinamide phosphoribosyltransferase, 1-[4-(piperidin-1-ylsulfonyl)phenyl]-3-(pyridin-3-ylmethyl)thiourea, PHOSPHATE ION, ... (5 entities in total)
Functional Keywordstransferase-transferase inhibitor complex, transferase/transferase inhibitor
Biological sourceHomo sapiens (human)
Cellular locationCytoplasm (By similarity): P43490
Total number of polymer chains2
Total formula weight115169.82
Authors
Primary citationZheng, X.,Bauer, P.,Baumeister, T.,Buckmelter, A.J.,Caligiuri, M.,Clodfelter, K.H.,Han, B.,Ho, Y.C.,Kley, N.,Lin, J.,Reynolds, D.J.,Sharma, G.,Smith, C.C.,Wang, Z.,Dragovich, P.S.,Oh, A.,Wang, W.,Zak, M.,Gunzner-Toste, J.,Zhao, G.,Yuen, P.W.,Bair, K.W.
Structure-based identification of ureas as novel nicotinamide phosphoribosyltransferase (nampt) inhibitors.
J.Med.Chem., 56:4921-4937, 2013
Cited by
PubMed Abstract: Nicotinamide phosphoribosyltransferase (Nampt) is a promising anticancer target. Virtual screening identified a thiourea analogue, compound 5, as a novel highly potent Nampt inhibitor. Guided by the cocrystal structure of 5, SAR exploration revealed that the corresponding urea compound 7 exhibited similar potency with an improved solubility profile. These studies also indicated that a 3-pyridyl group was the preferred substituent at one inhibitor terminus and also identified a urea moiety as the optimal linker to the remainder of the inhibitor structure. Further SAR optimization of the other inhibitor terminus ultimately yielded compound 50 as a urea-containing Nampt inhibitor which exhibited excellent biochemical and cellular potency (enzyme IC50 = 0.007 μM; A2780 IC50 = 0.032 μM). Compound 50 also showed excellent in vivo antitumor efficacy when dosed orally in an A2780 ovarian tumor xenograft model (TGI of 97% was observed on day 17).
PubMed: 23617784
DOI: 10.1021/jm400186h
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (1.906 Å)
Structure validation

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