Mode of Interaction of the Zinc Finger Protein TFIIIA with a 5S RNA Gene of Xenopus

The zinc finger protein TFIIIA, a positive transcription factor of the 5S RNA gene, binds to an internal control region of 50 nucleotides. Two modes of binding have been considered for the TFIIIA-DNA complex, one of which has been proposed on the basis of nuclease and chemical protection experiments...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 1990-07, Vol.87 (14), p.5528-5532
Hauptverfasser: Mair E. A. Churchill, Tullius, Thomas D., Klug, Aaron
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container_title Proceedings of the National Academy of Sciences - PNAS
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creator Mair E. A. Churchill
Tullius, Thomas D.
Klug, Aaron
description The zinc finger protein TFIIIA, a positive transcription factor of the 5S RNA gene, binds to an internal control region of 50 nucleotides. Two modes of binding have been considered for the TFIIIA-DNA complex, one of which has been proposed on the basis of nuclease and chemical protection experiments and the other on model building. Since then, evidence has accumulated on the structures of individual components of the complex--for example, zinc finger polypeptides studied by NMR and a segment of the binding site analyzed by x-ray crystallography, but no high-resolution structural data on the TFIIIA-DNA complex itself are available. Probes used previously to study the TFIIIA-DNA complex do not react with every nucleotide of DNA, unlike hydroxyl radical, which cleaves DNA at every backbone position. We describe here the quantitative analysis of high-resolution hydroxyl radical footprints and suggest how the array of zinc fingers might interact with the double helix.
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A. Churchill</creatorcontrib><creatorcontrib>Tullius, Thomas D.</creatorcontrib><creatorcontrib>Klug, Aaron</creatorcontrib><title>Mode of Interaction of the Zinc Finger Protein TFIIIA with a 5S RNA Gene of Xenopus</title><title>Proceedings of the National Academy of Sciences - PNAS</title><addtitle>Proc Natl Acad Sci U S A</addtitle><description>The zinc finger protein TFIIIA, a positive transcription factor of the 5S RNA gene, binds to an internal control region of 50 nucleotides. Two modes of binding have been considered for the TFIIIA-DNA complex, one of which has been proposed on the basis of nuclease and chemical protection experiments and the other on model building. Since then, evidence has accumulated on the structures of individual components of the complex--for example, zinc finger polypeptides studied by NMR and a segment of the binding site analyzed by x-ray crystallography, but no high-resolution structural data on the TFIIIA-DNA complex itself are available. 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subjects 550201 - Biochemistry- Tracer Techniques
AMPHIBIANS
ANIMALS
AQUATIC ORGANISMS
BASIC BIOLOGICAL SCIENCES
Binding sites
BIOCHEMICAL REACTION KINETICS
Biological and medical sciences
Chromosomal crossover
DNA
DNA probes
DNA, Ribosomal - genetics
DNA, Ribosomal - metabolism
DNA-Binding Proteins - metabolism
Free Radicals
Fundamental and applied biological sciences. Psychology
GENE OPERONS
Genes
Hydroxides - analysis
Hydroxyl Radical
HYDROXYL RADICALS
Interactions. Associations
Intermolecular phenomena
KINETICS
MAGNETIC RESONANCE
Magnetic Resonance Spectroscopy
Metalloproteins - metabolism
Models, Structural
Molecular biophysics
MOLECULAR STRUCTURE
NUCLEAR MAGNETIC RESONANCE
Nucleic Acid Conformation
NUCLEIC ACIDS
NUCLEOPROTEINS
Nucleotides
ORGANIC COMPOUNDS
Periodicity
Protein Binding
Protein Conformation
PROTEINS
RADICALS
REACTION KINETICS
RESONANCE
RIBOSOMAL RNA
RNA
RNA, Ribosomal - genetics
RNA, Ribosomal, 5S - genetics
Transcription Factor TFIIIA
TRANSCRIPTION FACTORS
Transcription Factors - metabolism
VERTEBRATES
X-Ray Diffraction
Xenopus
Zinc
Zinc - metabolism
ZINC COMPOUNDS
title Mode of Interaction of the Zinc Finger Protein TFIIIA with a 5S RNA Gene of Xenopus
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