Nucleic Acids Research, 1986, Vol. 14, No. 11 4385-4391
© 1986
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TFIIIA and homologous gens. The finger protiens
Institut Jacques Monod, CNRS and Universitè Paris VII 2, place Jussieu, 75251 Paris Cedex 05, France
Received April 3, 1986. Accepted May 2, 1986.
Differential regulation of gene expression , in a precise temporal and spatial pattern during development, is thought to be partly mediated by site specific DNA binding proteins which promote a selective activation of gene transcription (I). From studies on Xenopas TFIIIA, a factor selectively required for transcription of 5 S ribosomal RNA genes. Miller et al. (2) proposed a novel structural model of interaction between DNA and DNA binding protein. The striking homology of TFIIIA with several recently sequenced Drosophil and yeast gene products suggests that multiple regulatory proteins may have evolved from a small ancestral DNA binding protein domain and that the characteristic features of TFIIIA and TFIIIA-5S DNA interactions may be of general significance.
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