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- W4280541348 endingPage "113211" @default.
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- W4280541348 abstract "Different from the nucleolus-specific localization in some types of cancer cells, ribosomal L1 domain-containing protein 1 (RSL1D1) distributes throughout the nucleus in human colorectal cancer (CRC) cells. RSL1D1 directly interacts with DNA binding domain (aa 93-292) of wild-type p53 (p53-WT) and thereby recruits p53 to HDM2. The ensuing formation of RSL1D1/HDM2/p53 complex enhances p53 ubiquitination and decreases the protein level of p53 in CRC cells. In this study, we investigated the interaction between RSL1D1 and mutant p53 proteins. We first corroborated that aa 93-224 of p53 is a more precise domain for RSL1D1 binding and mutation in either aa 93-224 or aa 225-292 domain of p53 affects RSL1D1-p53 interaction. R175H mutated p53 does not interact with RSL1D1, whereas R273H mutated p53 still can bind to RSL1D1 but showing a remarkably decreased affinity than p53-WT. Although p53-R273H retains a weakened binding affinity with RSL1D1, it can hardly be recruited to HDM2 by RSL1D1 in HCT116 CRC cells. Accordingly, RSL1D1 loses its capacity to negatively regulate either R175H or R273H p53 mutant via directly interaction in HCT116 cells, thereby facilitating p53 mutants to accumulate and gain oncogenic function. Our findings help explain why mutant p53 proteins are more stable than p53-WT in CRC cells." @default.
- W4280541348 created "2022-05-22" @default.
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- W4280541348 date "2022-08-01" @default.
- W4280541348 modified "2023-09-29" @default.
- W4280541348 title "Mutations in DNA binding domain of p53 impede RSL1D1-p53 interaction to escape from degradation in human colorectal cancer cells" @default.
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- W4280541348 doi "https://doi.org/10.1016/j.yexcr.2022.113211" @default.
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