The GLI gene encodes a nuclear protein which binds specific sequences in the human genome

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Abstract

The GLI gene is amplified in a subset of human tumors and encodes a protein product with five zinc finger DNA-binding motifs. In this study, we show that the GLI gene product has a predominantly nuclear localization and binds DNA in a sequence-specific fashion. Three GLI binding sites were identified by using a novel procedure in which total human DNA was bound to a GLI recombinant fusion protein, and the polymerase chain reaction was used to amplify and recover the bound sequences. The GLI protein protected a 23- to 24-base region within all three binding sites, and the protected region in each case included the 9-base-pair sequence 5′-GACCACCCA-3′. One of the binding sites was contained within a 63-base-pair repeat of the variable number of tandem repeat type, whereas the other two sites were represented once in the genome. The approach used here to identify GLI binding sites should be applicable to the characterization of other zinc finger proteins.

Original languageEnglish (US)
Pages (from-to)634-642
Number of pages9
JournalMolecular and Cellular Biology
Volume10
Issue number2
StatePublished - Feb 1990

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Human Genome
Nuclear Proteins
Binding Sites
Zinc Fingers
Base Pairing
Genes
Recombinant Fusion Proteins
Minisatellite Repeats
Nucleotide Motifs
Proteins
DNA
Genome
Polymerase Chain Reaction
Neoplasms

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cell Biology

Cite this

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title = "The GLI gene encodes a nuclear protein which binds specific sequences in the human genome",
abstract = "The GLI gene is amplified in a subset of human tumors and encodes a protein product with five zinc finger DNA-binding motifs. In this study, we show that the GLI gene product has a predominantly nuclear localization and binds DNA in a sequence-specific fashion. Three GLI binding sites were identified by using a novel procedure in which total human DNA was bound to a GLI recombinant fusion protein, and the polymerase chain reaction was used to amplify and recover the bound sequences. The GLI protein protected a 23- to 24-base region within all three binding sites, and the protected region in each case included the 9-base-pair sequence 5′-GACCACCCA-3′. One of the binding sites was contained within a 63-base-pair repeat of the variable number of tandem repeat type, whereas the other two sites were represented once in the genome. The approach used here to identify GLI binding sites should be applicable to the characterization of other zinc finger proteins.",
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AB - The GLI gene is amplified in a subset of human tumors and encodes a protein product with five zinc finger DNA-binding motifs. In this study, we show that the GLI gene product has a predominantly nuclear localization and binds DNA in a sequence-specific fashion. Three GLI binding sites were identified by using a novel procedure in which total human DNA was bound to a GLI recombinant fusion protein, and the polymerase chain reaction was used to amplify and recover the bound sequences. The GLI protein protected a 23- to 24-base region within all three binding sites, and the protected region in each case included the 9-base-pair sequence 5′-GACCACCCA-3′. One of the binding sites was contained within a 63-base-pair repeat of the variable number of tandem repeat type, whereas the other two sites were represented once in the genome. The approach used here to identify GLI binding sites should be applicable to the characterization of other zinc finger proteins.

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