ISDA: 3BET

Deposition Date 2007-11-20

Release Date 2008-10-07

Last Version Date 2023-11-01

Entry Detail

PDB ID:

3BET

Keywords:

LYASE

Title:

Crystal structure of the human carbonic anhydrase II in complex with STX 641 at 1.85 angstroms resolution

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.85 Å

R-Value Free:

0.20

R-Value Work:

0.17

Space Group:

P 1 21 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Carbonic anhydrase 2
Gene (Uniprot):CA2
Chain IDs:A
Chain Length:259
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P00918 Pfam ID:PF00194 EC:4.2.1.1

Ligand Molecules

CTF

GOL

Primary Citation

Structure-activity relationships of C-17 cyano-substituted estratrienes as anticancer agents

Leese, M.P, Jourdan, F.L, Gaukroger, K, Mahon, M.F, Newman, S.P, Foster, P.A, Stengel, C, Regis-Lydi, S, Ferrandis, E, Di Fiore, A, De Simone, G, Supuran, C.T, Purohit, A, Reed, M.J, Potter, B.V, Eriksson, A.E, Jones, T.A, Liljas, A, Leese, M.P, Leblond, B, Smith, A, Newman, S.P, Di Fiore, A, De Simone, G, Supuran, C.T, Purohit, A, Reed, M.J, Potter, B.V.Show

J.Med.Chem. 51 1295 1308 (2008)

PMID: 18260615 DOI: 10.1021/jm701319c

Abstact

The synthesis, SAR, and preclinical evaluation of 17-cyanated 2-substituted estra-1,3,5(10)-trienes as anticancer agents are discussed. 2-Methoxy-17beta-cyanomethylestra-1,3,5(10)-trien-3-ol (14), but not the related 2-ethyl derivative 7, and the related 3- O-sulfamates 8 and 15 display potent antiproliferative effects (MCF-7 GI 50 300, 60 and 70 nM, respectively) against human cancer cells in vitro. Investigation of the SAR reveals that a sterically unhindered hydrogen bond acceptor attached to C-17 is most likely key to the enhanced activity. Compound 8 displayed significant in vitro antiangiogenic activity, and its ability to act as a microtubule disruptor was confirmed. Inhibitory activity of the sulfamate derivatives against steroid sulfatase and carbonic anhydrase II (hCAII) was also observed, and the interaction between 15 and hCAII was investigated by protein crystallography. The potential of these multimechanism anticancer agents was confirmed in vivo, with promising activity observed for both 14 and 15 in an athymic nude mouse MDA-MB-231 human breast cancer xenograft model.

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