PMID- 12870922 OWN - NLM STAT- MEDLINE DCOM- 20031211 LR - 20061115 IS - 0095-2338 (Print) IS - 0095-2338 (Linking) VI - 43 IP - 4 DP - 2003 Jul-Aug TI - QSAR study of ethyl 2-[(3-methyl-2,5-dioxo(3-pyrrolinyl))amino]-4-(trifluoromethyl) pyrimidine-5-carboxylate: an inhibitor of AP-1 and NF-kappa B mediated gene expression based on support vector machines. PG - 1288-96 AB - The support vector machine, as a novel type of learning machine, for the first time, was used to develop a QSAR model of 57 analogues of ethyl 2-[(3-methyl-2,5-dioxo(3-pyrrolinyl))amino]-4-(trifluoromethyl)pyrimidine-5-carboxylate (EPC), an inhibitor of AP-1 and NF-kappa B mediated gene expression, based on calculated quantum chemical parameters. The quantum chemical parameters involved in the model are Kier and Hall index (order3) (KHI3), Information content (order 0) (IC0), YZ Shadow (YZS) and Max partial charge for an N atom (MaxPCN), Min partial charge for an N atom (MinPCN). The mean relative error of the training set, the validation set, and the testing set is 1.35%, 1.52%, and 2.23%, respectively, and the maximum relative error is less than 5.00%. FAU - Liu, H X AU - Liu HX AD - Department of Chemistry, Lanzhou University, Lanzhou 730000, China. FAU - Zhang, R S AU - Zhang RS FAU - Yao, X J AU - Yao XJ FAU - Liu, M C AU - Liu MC FAU - Hu, Z D AU - Hu ZD FAU - Fan, B T AU - Fan BT LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Chem Inf Comput Sci JT - Journal of chemical information and computer sciences JID - 7505012 RN - 0 (Carboxylic Acids) RN - 0 (NF-kappa B) RN - 0 (Pyrimidines) RN - 0 (Pyrroles) RN - 0 (Transcription Factor AP-1) SB - IM MH - Carboxylic Acids/chemistry/pharmacology MH - Computational Biology/*methods MH - Drug Design MH - Gene Expression Regulation/drug effects MH - Humans MH - NF-kappa B/*antagonists & inhibitors/physiology MH - Pyrimidines/chemistry/*pharmacology MH - Pyrroles/chemistry/*pharmacology MH - Quantitative Structure-Activity Relationship MH - Quantum Theory MH - Sensitivity and Specificity MH - Transcription Factor AP-1/*antagonists & inhibitors/physiology EDAT- 2003/07/23 05:00 MHDA- 2003/12/12 05:00 CRDT- 2003/07/23 05:00 PHST- 2003/07/23 05:00 [pubmed] PHST- 2003/12/12 05:00 [medline] PHST- 2003/07/23 05:00 [entrez] AID - 10.1021/ci0340355 [doi] PST - ppublish SO - J Chem Inf Comput Sci. 2003 Jul-Aug;43(4):1288-96. doi: 10.1021/ci0340355.