3GHW

Human dihydrofolate reductase inhibitor complex

3GHW の概要

• エントリーDOI: 10.2210/pdb3ghw/pdb
• 関連するPDBエントリー: 3GHC 3GHV 3f84
• 分子名称: Dihydrofolate reductase, N-({4-[(2-amino-6-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-5-yl)sulfanyl]phenyl}carbonyl)-L-glutamic acid, NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE, ... (5 entities in total)
• 機能のキーワード: human dihydrofoalte reductase inhibitor complex, nadp, one-carbon metabolism, oxidoreductase
• 由来する生物種: Homo sapiens (human)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 22653.51

構造登録者

Cody, V. (登録日: 2009-03-04, 公開日: 2009-09-22, 最終更新日: 2023-09-06)

主引用文献

Gangjee, A.,Li, W.,Kisliuk, R.L.,Cody, V.,Pace, J.,Piraino, J.,Makin, J.
Design, synthesis, and X-ray crystal structure of classical and nonclassical 2-amino-4-oxo-5-substituted-6-ethylthieno[2,3-d]pyrimidines as dual thymidylate synthase and dihydrofolate reductase inhibitors and as potential antitumor agents
J.Med.Chem., 52:4892-4902, 2009

PubMed Abstract: N-{4-[(2-Amino-6-ethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-5-yl)thio]benzoyl}-L-glutamic acid 2 and 13 nonclassical analogues 2a-2m were synthesized as potential dual thymidylate synthase (TS) and dihydrofolate reductase (DHFR) inhibitors and as antitumor agents. The key intermediate in the synthesis was 2-amino-6-ethyl-5-iodothieno[2,3-d]pyrimidin-4(3H)-one, 7, to which various arylthiols were attached at the 5-position. Coupling 8 with L-glutamic acid diethyl ester and saponification afforded 2. X-ray crystal structures of 2 and 1 (the 6-methyl analogue of 2), DHFR, and NADPH showed for the first time that the thieno[2,3-d]pyrimidine ring binds in a "folate" mode. Compound 2 was an excellent dual inhibitor of human TS (IC50 = 54 nM) and human DHFR (IC50 = 19 nM) and afforded nanomolar GI50 values against tumor cells in culture. The 6-ethyl substitution in 2 increases both the potency (by 2-3 orders of magnitude) as well as the spectrum of tumor inhibition in vitro compared to the 6-methyl analogue 1. Some of the nonclassical analogues were potent and selective inhibitors of DHFR from Toxoplasma gondii.

PubMed: 19719239
DOI: 10.1021/jm900490a

実験手法

X-RAY DIFFRACTION (1.24 Å)