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Purification and characterization of nuclear factor III (origin recognition protein C), a sequence-specific DNA binding protein required for efficient initiation of adenovirus DNA replication. 1988

E A O'Neill, and T J Kelly
Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205.

Nuclear factor III (NF-III, origin recognition protein C) is a cellular DNA binding protein that has high affinity for a DNA sequence contained within the adenovirus origin of DNA replication. We have purified NF-III more than 760-fold from HeLa nuclear extracts by a combination of conventional methods and DNA recognition site affinity chromatography. The NF-III polypeptide has an apparent molecular weight of 92,000 as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The sedimentation coefficient of the native protein is 3.1 S, and the Stokes radius is 61 A. These values indicate that NF-III exists in solution as a somewhat asymmetric monomer. Purified NF-III binds specifically to a sequence within domain C of the adenovirus origin of replication and stimulates initiation of adenovirus DNA replication in in vitro reconstitution experiments. NF-III also binds specifically to a sequence element in the human histone H2B gene that is required for H2B-specific mRNA synthesis in vitro. Thus, NF-III may function as an activator of both viral DNA replication and cellular transcription.

UI MeSH Term Description Entries
D009687 Nuclear Proteins Proteins found in the nucleus of a cell. Do not confuse with NUCLEOPROTEINS which are proteins conjugated with nucleic acids, that are not necessarily present in the nucleus. Nucleolar Protein,Nucleolar Proteins,Nuclear Protein,Protein, Nuclear,Protein, Nucleolar,Proteins, Nuclear,Proteins, Nucleolar
D002846 Chromatography, Affinity A chromatographic technique that utilizes the ability of biological molecules, often ANTIBODIES, to bind to certain ligands specifically and reversibly. It is used in protein biochemistry. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Chromatography, Bioaffinity,Immunochromatography,Affinity Chromatography,Bioaffinity Chromatography
D004261 DNA Replication The process by which a DNA molecule is duplicated. Autonomous Replication,Replication, Autonomous,Autonomous Replications,DNA Replications,Replication, DNA,Replications, Autonomous,Replications, DNA
D004262 DNA Restriction Enzymes Enzymes that are part of the restriction-modification systems. They catalyze the endonucleolytic cleavage of DNA sequences which lack the species-specific methylation pattern in the host cell's DNA. Cleavage yields random or specific double-stranded fragments with terminal 5'-phosphates. The function of restriction enzymes is to destroy any foreign DNA that invades the host cell. Most have been studied in bacterial systems, but a few have been found in eukaryotic organisms. They are also used as tools for the systematic dissection and mapping of chromosomes, in the determination of base sequences of DNAs, and have made it possible to splice and recombine genes from one organism into the genome of another. EC 3.21.1. Restriction Endonucleases,DNA Restriction Enzyme,Restriction Endonuclease,Endonuclease, Restriction,Endonucleases, Restriction,Enzymes, DNA Restriction,Restriction Enzyme, DNA,Restriction Enzymes, DNA
D004268 DNA-Binding Proteins Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases. DNA Helix Destabilizing Proteins,DNA-Binding Protein,Single-Stranded DNA Binding Proteins,DNA Binding Protein,DNA Single-Stranded Binding Protein,SS DNA BP,Single-Stranded DNA-Binding Protein,Binding Protein, DNA,DNA Binding Proteins,DNA Single Stranded Binding Protein,DNA-Binding Protein, Single-Stranded,Protein, DNA-Binding,Single Stranded DNA Binding Protein,Single Stranded DNA Binding Proteins
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D000256 Adenoviridae A family of non-enveloped viruses infecting mammals (MASTADENOVIRUS) and birds (AVIADENOVIRUS) or both (ATADENOVIRUS). Infections may be asymptomatic or result in a variety of diseases. Adenoviruses,Ichtadenovirus,Adenovirus,Ichtadenoviruses
D014157 Transcription Factors Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process. Transcription Factor,Factor, Transcription,Factors, Transcription
D050811 Octamer Transcription Factor-1 A ubiquitously expressed octamer transcription factor that regulates GENETIC TRANSCRIPTION of SMALL NUCLEAR RNA; IMMUNOGLOBULIN GENES; and HISTONE H2B genes. Oct-1 Transcription Factor,Transcription Factor Oct-1,NFIII Transcription Factor,Nuclear Factor III,OTF-1 Transcription Factor,Octamer Transcription Factor 1,Octamer Transcription Factor OTF-1,Transcription Factor OTF-1,OTF 1 Transcription Factor,OTF-1, Transcription Factor,Oct 1 Transcription Factor,Oct-1, Transcription Factor,Octamer Transcription Factor OTF 1,Transcription Factor OTF 1,Transcription Factor Oct 1,Transcription Factor, NFIII,Transcription Factor, OTF-1,Transcription Factor, Oct-1,Transcription Factor-1, Octamer
D051863 Host Cell Factor C1 A cellular transcriptional coactivator that contains N-terminal KELCH REPEATS and N- and C-terminal FIBRONECTIN TYPE III DOMAINS. It functions as a transcription factor for a number of genes and in the assembly of IMMEDIATE-EARLY PROTEINS of the HERPES SIMPLEX VIRUS. Mutations in the HCFC1 gene are associated with cases of X-LINKED MENTAL RETARDATION. C1 Host Cell Factor,Cell Proliferation Factor HCF,HCFC1 Protein

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