Abstract：
:Mutant p53 proteins were shown to exert complex DNA-interactions in vitro, like binding to MAR-DNA, but so far it is unknown whether such interactions also occur in vivo. Therefore we analysed the binding of mutant (mut) p53 (Gly245-->Ser) in Onda 11 glioma cells to cellular DNA in vivo, using p53-specific chromatin immunoprecipitation (CHIP) after in vivo cross-linking of mut p53 to genomic DNA with cisplatin. We identified genomic DNA fragments to which mut p53 (Gly245-->Ser) could be cross-linked in vivo. Purified recombinant mut p53 (Gly245-->Ser) was able to bind specifically to such elements in PCR-EMSA in vitro, supporting the idea that this mut p53 protein interacts with genomic DNA in vivo. The genomic DNA fragments identified are vastly different in sequence, but display as a common feature a high likelihood to adopt a non B-DNA conformation. Therefore we propose that structural determinants within these DNA elements are important for their interaction with mut p53 (Gly245-->Ser) in vivo. Oncogene (2000) 19, 4178 - 4183
journal_name
Oncogenejournal_title
Oncogeneauthors
Koga H,Deppert Wdoi
10.1038/sj.onc.1203745subject
Has Abstractpub_date
2000-08-24 00:00:00pages
4178-83issue
36eissn
0950-9232issn
1476-5594journal_volume
19pub_type
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