7NH6 image
Entry Detail
PDB ID:
7NH6
Keywords:
Title:
Crystal structure of human carbonic anhydrase II with 3-(3-((1-(2-(hydroxymethyl)-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3-yl)-1H-1,2,3-triazol-4-yl)methyl)ureido)benzenesulfonamide
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2021-02-10
Release Date:
2022-02-23
Method Details:
Experimental Method:
Resolution:
1.28 Å
R-Value Free:
0.17
R-Value Work:
0.15
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Carbonic anhydrase 2
Chain IDs:A (auth: AAA)
Chain Length:260
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
Mechanisms of the Antiproliferative and Antitumor Activity of Novel Telomerase-Carbonic Anhydrase Dual-Hybrid Inhibitors.
J.Med.Chem. 64 11432 11444 (2021)
PMID: 34283610 DOI: 10.1021/acs.jmedchem.1c00756

Abstact

Human (h) telomerase (TL; EC 2.7.7.49) plays a key role in sustaining cancer cells by means of elongating telomeric repeats at the 3' ends of chromosomes. Since TL-inhibitor (TI) stand-alone cancer therapy has been proven to be remarkably challenging, a polypharmacological approach represents a valid alternative. Here we consider a series of compounds able to inhibit both hTL and the tumor-associated carbonic anhydrases (CAs; EC 4.2.1.1) IX and XII. Compounds 7 and 9 suppressed hTL activity in both cell lysates and human colon cancer cell lines, and prolonged incubation with either 7 or 9 resulted in telomere shortening, cell cycle arrest, replicative senescence, and apoptosis. Enzyme kinetics showed that 7 and 9 are mixed-type inhibitors of the binding of DNA primers and deoxynucleoside triphosphate (dNTP) to the TL catalytic subunit hTERT, which is in agreement with docking experiments. Compound 9 showed antitumor activity in Colo-205 mouse xenografts and suppressed telomerase activity by telomere reduction.

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