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https://www.selleckchem.com/products/e6446.html Local duplication was shown to play a predominant role in gene expansion in papaya, castor, and jatropha, which is only confined to the Lhcb1 group. By contrast, WGD plays a relatively more important role in cassava, arabidopsis, and other Brassicaceous plants. Further comparison of Brassicaceous plants revealed that loss of the SEP6 group in arabidopsis is lineage-specific, occurring sometime after papaya-arabidopsis divergence but before the radiation of Brassicaceous plants. Transcriptional profiling revealed a leaf-preferential expression pattern of most CpLhc superfamily genes and their transcript levels were markedly regulated by three abiotic stresses, i.e., mimicking drought, cold, and high salt. These findings not only facilitate further functional studies in papaya, but also improve our knowledge on lineage-specific evolution of this special gene superfamily in Brassicaceae. Pigs have been increasingly recognized as a relevant model for studying many human diseases. However, functions and regulations of numerous critical molecules involved in human diseases are not well characterized in pigs, including the prominent tumor suppressor p53, a transcription factor involved in various anti-proliferative processes. In this study, we systematically characterized porcine p53 (p-p53) in its transcriptional activity and regulation by the E3 ligase Mdm2, in comparison with that of human p53 (h-p53). p-p53 is highly homologous to h-p53 with the N-terminal region showing relative divergence. p-p53 exhibits a comparable transcriptional activity to that of h-p53 towards a diverse range of known target genes, and is subject to ubiquitination and degradation by both human and porcine Mdm2 (h-/p-Mdm2). Utilization of the h-Mdm2 targeting compound Nutlin-3 and protein RPL11 inhibits the negative effect of p-Mdm2 on p-p53. These results suggest that the transcription activity and regulation of p-p53 is very similar to that of h-

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