The purpose of the present review is to summarize the data related with the structural features of interaction between the human repair enzyme 8-oxoguanine DNA glycosylase (hOGG1) and DNA. The review covers the questions concerning the role of individual amino acids of hOGG1 in the specific recognition of the oxidized DNA bases, formation of the enzyme-substrate complex, and excision of the lesion bases from DNA. Attention is also focused upon conformational changes in the enzyme active site and disruption of enzyme activity as a result of amino acid mutations. The mechanism of damaged bases release from DNA induced by hOGG1 is discussed in the context of structural dynamics.
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