Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:2.7.7.7 (DNA polymerase)
17,007 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A simple, efficient procedure for cross-linking two complementary oligonucleotides, which does not require chemical modification of either oligonucleotide, is described. One of the oligonucleotides is first converted to the 5'-phosphorothioate derivative with polynucleotide kinase. It is then incubated with its complement in the presence of 1 microM trans-platinum(II)diammine dichloride. After overnight incubation, 40-50% cross-linking is observed. DNA synthesis by the Klenow fragment of Escherichia coli DNA polymerase I is blocked at the cross-linked site, resulting in the formation of truncated products. Potassium platinous chloride (K2PtCl4) and cis-platinum(II)diammine dichloride form cross-links less efficiently than the trans isomer.
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PMID:A simple procedure for cross-linking complementary oligonucleotides. 218 Apr 30