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Adenovirus serotype determines association and localization of the large E1B tumor antigen with cellular tumor antigen p53 in transformed cells. 总被引:35,自引:11,他引:24
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A Zantema P I Schrier A Davis-Olivier T van Laar R T Vaessen A J van der EB 《Molecular and cellular biology》1985,5(11):3084-3091
The distribution and stability of the cellular tumor antigen p53 were studied in baby rat kidney cells transformed by region E1 sequences of nononcogenic adenovirus (Ad) type 5 (Ad5) or oncogenic type 12 (Ad12). In transformed cells expressing the large E1B T antigen of Ad5, p53 was associated with this T antigen. The complexed proteins were concentrated in a cytoplasmic body, which has been shown to consist of a cluster of 8-nm filaments (A. Zantema et al., Virology 142:44-58, 1985). In transformed cells expressing the E1B region of Ad12, however, no association between the viral large T antigen and p53 was detectable. In the latter case, both proteins were found almost exclusively in the nucleus. The stability of p53 in both Ad5- and Ad12-transformed cells was increased relative to that in primary cells or cells immortalized by the E1A region only. Thus, the increased stability of p53 in Ad-transformed cells is not caused by association with a viral T antigen, but it correlates with expression of E1B and with morphological transformation. 相似文献
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High concentrations (1000 parts 106) of trichloroacetate(TCA) inhibit germination of Pinus radiata seed. Seedlings growingin the presence of lower concentrations (100 parts 106)take up TCA where it becomes concentrated in cotyledons anddeveloping primary needles. TCA inhibits biosynthesis of nonacosan-10-oland long chain diol constituents of the primary needle epicuticularwax concomitant with a reduction in appearance of tubular waxexcept around stomatal pores. Epicuticular wax from TCA-treatedplants consists mainly of alkyl esters, and is amorphous. Itis suggested that P. radiata stomatal subsidiary cells possesstubular epicuticular wax chemically distinct from that of epidermalcells. 相似文献
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Roberto?H?Higa Roberto?C?Togawa Arnaldo?J?Montagner Juliana?CF?Palandrani Igor?KS?Okimoto Paula?R?Kuser Michel?EB?Yamagishi Adauto?L?Mancini Goran?NeshichEmail author 《BMC bioinformatics》2004,5(1):107
Background
The integration of many aspects of protein/DNA structure analysis is an important requirement for software products in general area of structural bioinformatics. In fact, there are too few software packages on the internet which can be described as successful in this respect. We might say that what is still missing is publicly available, web based software for interactive analysis of the sequence/structure/function of proteins and their complexes with DNA and ligands. Some of existing software packages do have certain level of integration and do offer analysis of several structure related parameters, however not to the extent generally demanded by a user. 相似文献8.
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P. MALLE M. VALLÉ P. DEMARQUE P. EB R. TAILLIEZ 《Journal of Rapid Methods and Automation in Microbiology》1998,6(2):93-102
H2 S+ bacteria responsible for the degradation of sulfur-containing amino acids of fish muscle are currently little used to evaluate the microbiological pal quality of fish. Shewanella putrefaciens greatly predominates in this flora, and was therefore used to define a suitable culture method and medium. Inoculations by the Spiral surface method at 25C, with an incubation of 72h, gave the best counts on a medium containing two sources of sulfur (organic and inorganic) for H2 S+ bacteria. The culture medium and the NaCl concentration were determinant in the evaluation of this flora. At present there is no standard medium which meets these requirements. 相似文献
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