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Iodination as a probe for small regions of disrupted secondary structure in double-stranded DNAs.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jensen, Kaj Nes, Ingolf F. Wells, R. D. |
| Copyright Year | 1976 |
| Abstract | Conditions were established where the thallium-catalyzed iodination of random coil DNA proceeded 100-200 times faster than for native DNA. This reaction was explored as a probe for localized regions of disrupted base pairs in duplex DNA. A heteroduplex was constructed between DNA fragments produced by Hind II + III cleavage of phi80 plac DNA and phi80 plac DNA containing the Ll deletion (73 nucleotides in length). This heteroduplex incorporated twelve times as much iodine as the parent homoduplex fragments. Hence the technique could reveal the presence of a few (two or more) nonpaired cytosines, if they existed within an otherwise helical DNA fragment 789 base pairs long. Iodination studies were performed on superhelical SV40 DNA and on linear lambdaplac DNA. Analysis of the relative amount of iodine in restriction endonuclease fragments of these DNA's revealed the absence of localized single-stranded regions. |
| Starting Page | 79 |
| Ending Page | 85 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/nar/3/11/10.1093/nar/3.11.3143/2/3-11-3143.pdf?Expires=1493128830&Key-Pair-Id=APKAIUCZBIA4LVPAVW3Q&Signature=Cyun7WaZLE4490LV-GwNwoPVFr0E3feIB9r3V3IJJuiJOV35VETAROvIy2RhXRjbhDOCvzUAaFmcuawyBS4d5ozuD5yk~5bNrApzq4whYxc70ekVAkcX4FI8336WUq8oasLPHYiDHmHmBQmrDs8sF~fCEU~jnJ1gMPRUNYoyR6~Q4XibXoJth487ICXNTCP0j8ZcyYCz8wB4HujiNoxrjZw5wyV07nSb5MZh1cpJuoRzlSK0x0HuXDHwROzTv1kNF9TtljH4n1PMMSzyT1fLk826T~l3auxuBJkAahNQ6iNcu57DE4ddyBD-n6cNT3uxfkLUPTRS-qOlntU~77YDRg__ |
| PubMed reference number | 1087408v1 |
| Volume Number | 3 |
| Issue Number | 11 |
| Journal | Nucleic acids research |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Base Pairing DNA Restriction Enzymes Deletion Mutation Iodination reaction Nucleotides Thallium endonuclease |
| Content Type | Text |
| Resource Type | Article |
