Structural Basis for Inhibitor Specificity in Human Poly(ADP-ribose) Polymerase-3

被引:94
作者
Lehtio, Lari [2 ]
Jemth, Ann-Sofie [1 ]
Collins, Ruairi [2 ]
Loseva, Olga [1 ]
Johansson, Andreas [2 ]
Markova, Natalia [2 ,3 ]
Hammarstrom, Martin [2 ]
Flores, Alex [2 ]
Holmberg-Schiavone, Lovisa [2 ]
Weigelt, Johan [2 ]
Helleday, Thomas [1 ,4 ]
Schuler, Herwig [2 ]
Karlberg, Tobias [2 ]
机构
[1] Stockholm Univ, Dept Genet Microbiol & Toxicol, SE-10691 Stockholm, Sweden
[2] Karolinska Inst, Dept Med Biochem & Biophys, Struct Genom Consortium, SE-17177 Stockholm, Sweden
[3] iNovacia AB, SE-11251 Stockholm, Sweden
[4] Univ Oxford, Gray Inst Radiat Oncol & Biol, Oxford OX3 7DQ, England
基金
英国惠康基金; 瑞典研究理事会; 英国医学研究理事会;
关键词
DNA-REPAIR; CATALYTIC FRAGMENT; CEREBRAL-ISCHEMIA; STABILITY; PARP-1; CELLS;
D O I
10.1021/jm900052j
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Poly(ADP-ribose) polymerases (PARPs) activate DNA repair mechanisms upon stress- and cytotoxin-induced DNA damage, and inhibition of PARP activity is a lead in cancer drug therapy. We present a structural and functional analysis of the PARP domain of human PARP-3 in complex with several inhibitors: Of these, KU0058948 is the strongest inhibitor of PARP-3, activity. The presented crystal structures highlight key features for potent inhibitor binding and suggest routes for creating isoenzyme-specific PARP inhibitors.
引用
收藏
页码:3108 / 3111
页数:4
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