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XB-ART-2764
Gene Expr Patterns November 1, 2004; 5 (1): 81-9.
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Embryonic expression of pre-initiation DNA replication factors in Xenopus laevis.

Walter BE , Henry JJ .


Abstract
We examined the expression of various DNA replication factors, including: cdc45, the factors of the GINS heterotetramer (Sld5, Psf1, Psf2, Psf3), and PCNA, in Xenopus laevis during embryonic development via whole mount in situ hybridization. For the most part, these factors were expressed in similar patterns, with some subtle variations, throughout development within the anterior CNS, pharyngeal arches, and various placodes. More significant variations were also observed, including expression of only Psf1 and Psf2 in the pronephros and unique Psf2 expression in the somitic mesoderm. Overall, these results suggest that common regulatory mechanisms are involved in the transcriptional deployment of these factors. Significantly, expression of these factors does not directly coincide with elevated patterns of DNA replication, suggesting that different replication factors are utilized in different developmental regions.

PubMed ID: 15533822
Article link: Gene Expr Patterns
Grant support: [+]

Species referenced: Xenopus laevis
Genes referenced: cdc45 gins1 gins2 gins3 gins4 pcna tap1 tap2


Article Images: [+] show captions