Title : Rational design of quinazoline-based irreversible inhibitors of human erythrocyte purine nucleoside phosphorylase.

Pub. Date : 1991 Aug 27

PMID : 1909177






7 Functional Relationships(s)
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1 The amine-phosphate interaction also served to confirm that a quinazolin-4(3H)-one binds in the PNPase active sites like a purine substrate. amine-phosphate polyribonucleotide nucleotidyltransferase 1 Homo sapiens
2 The amine-phosphate interaction also served to confirm that a quinazolin-4(3H)-one binds in the PNPase active sites like a purine substrate. 4-hydroxyquinazoline polyribonucleotide nucleotidyltransferase 1 Homo sapiens
3 The amine-phosphate interaction also served to confirm that a quinazolin-4(3H)-one binds in the PNPase active sites like a purine substrate. purine polyribonucleotide nucleotidyltransferase 1 Homo sapiens
4 From models of the PNPase active site it was possible to design quinazoline-based quinones that undergo a reductive-addition reaction with an active-site glutamate residue. quinazoline-based quinones polyribonucleotide nucleotidyltransferase 1 Homo sapiens
5 From models of the PNPase active site it was possible to design quinazoline-based quinones that undergo a reductive-addition reaction with an active-site glutamate residue. Glutamic Acid polyribonucleotide nucleotidyltransferase 1 Homo sapiens
6 The best inhibitor studied, 2-(chloromethyl)quinazoline-4,5,8(3H)-trione, rapidly inactivates PNPase by a first-order process with an inhibitor to enzyme stoichiometry of 150. 2-(chloromethyl)quinazoline-4,5,8(3h)-trione polyribonucleotide nucleotidyltransferase 1 Homo sapiens
7 Thus, this inhibitor is designed to cross-link the PNPase active site by reductive addition followed by the generation of an alkylating quinone methide species. quinone polyribonucleotide nucleotidyltransferase 1 Homo sapiens