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. 1991 Sep 11;19(17):4623–4629. doi: 10.1093/nar/19.17.4623

Removal of psoralen monoadducts and crosslinks by human cell free extracts.

J T Reardon 1, P Spielmann 1, J C Huang 1, S Sastry 1, A Sancar 1, J E Hearst 1
PMCID: PMC328701  PMID: 1891353

Abstract

Human cell free extracts are capable of carrying out damage-induced DNA synthesis in response to DNA damage by UV, psoralen, and cisplatin. We show that this damage-induced DNA synthesis is associated with removal of psoralen adducts and therefore is 'repair synthesis' and not an aberrant DNA synthesis reaction potentiated by DNA deformed by adducts. By comparing the denaturable fraction of psoralen adducted DNA which becomes labeled in the repair reaction to that of terminally labeled DNA (without repair) we have found that all DNA synthesis induced by psoralen monoadducts is the consequence of removal of these adducts. By the same approach we have obtained preliminary evidence that this in vitro system is capable of removing psoralen crosslinks as well.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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