Site-specific inversions in repeated Xenopus laevis homeobox gene 2 sequences
نویسندگان
چکیده
منابع مشابه
More ribosomal spacer sequences from Xenopus laevis.
The base sequence analysis of a Xenopus laevis ribosomal DNA repeat (7) has been extended to cover almost the entire non-transcribed and external transcribed spacer. A compilation of these sequences is presented. All the repetitive and non-repetitive sequence elements of the spacer are identified and their evolution discussed. Comparison of the X.laevis and S.cerevisiae (25,26) ribosomal DNAs s...
متن کاملProgressively restricted expression of a new homeobox-containing gene during Xenopus laevis embryogenesis.
We have isolated cDNAs encoding a novel Xenopus homeodomain-containing protein homologous to the mouse Hox-7.1 and the Drosophila muscle segment homebox (msh). Northern blot and RNAase protection experiments established that transcripts of the frog gene, termed Xhox-7.1, first appear at about the beginning of gastrulation. After a rapid increase, mRNA levels plateau between the neurula and midd...
متن کاملLocalization of specific mRNA sequences in Xenopus laevis embryos by in situ hybridization.
In situ hybridization of cloned cDNA probes to frozen sections of Xenopus laevis stage-42 tadpoles has been used to determine the tissue localization of several mRNAs. Nine out of sixteen probes tested hybridized to most or all tadpole tissues; seven probes exhibited tissue-specific hybridization. The non-tissue-specific sequences hybridized to RNA species that are also present in maternal RNA ...
متن کاملThe Xenopus laevis ribosomal gene promoter contains a binding site for nuclear factor-1.
Nuclear Factor I (NF1) is a DNA binding protein that is known to function in the replication of Adeno virus and also binds to many promoters recognized by RNA polymerase II. We have found that there is also an NF1 binding site within the ribosomal gene promoter from Xenopus laevis as well as in several other promoters recognized by RNA polymerase I. The function of a binding site for a polymera...
متن کاملExpression of the Xvax2 gene demarcates presumptive ventral telencephalon and specific visual structures in Xenopus laevis
vax2 is a recently isolated homeobox gene, that plays an important role in controlling the dorso-ventral patterning of the retina. In this paper we present a thorough description of the Xvax2 expression pattern all along Xenopus embryogenesis, and compare this pattern in detail to that shown by Xvax1b and Xpax2, two genes also involved in ventral eye development. At early neurula stages, while ...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 1988
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/16.18.9058