XB-IMG-156876
Xenbase Image ID: 156876
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FIG. 2. Comparison of the three Xenopus Slug genes. A, all three genes displayed the same organization, with three exons (dark-gray boxes)
and two introns (i1 and i2; white boxes) of similar length. Asterisks indicate the positions of the stop codons in the coding regions. The 5 -flanking
regions are divergent except for two conserved regions, each 300 bp long (regions A and B). Region A is located just upstream from the CAP site,
whereas the position of region B is variable. The repeat boxes indicate repeats of a 79-nucleotide motif in X. laevis (X.l.) sequences. The GT box
indicates a region of GT repeats in the X. tropicalis (X.t.) sequence. B, comparison of the sequences of X. tropicalis and X. laevis promoters around
the transcription start site (indicated by arrows). Asterisks indicate differences between the two species. We predicted CAP sites and determined
score as described by Bucher (21). In the X. laevis promoter, a 9-bp insertion creates an extra CAP site, with a better predicted score than the initial
CAP site and that of X. tropicalis. Image published in: Vallin J et al. (2001) Copyright © 2001. Image reproduced with permission of the publisher and the copyright holder. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. Larger Image Printer Friendly View |