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  • Blackwell Publishing Ltd  (3)
  • 1995-1999  (3)
  • 1970-1974
  • 1995  (3)
  • 1972
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 772 (1995), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1574-6976
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract: φ29 DNA replication starts at both DNA ends by a protein priming mechanism. The formation of the terminal protein-dAMP initiation complex is directed by the second nucleotide from the 3′ end of the template. The transition from protein-primed initiation to normal DNA elongation has been proposed to occur by a sliding-back mechanism that is necessary for maintaining the sequences at the φ29 DNA ends. Structure—function studies have been carried out in the φ29 DNA polymerase. By site-directed mutagenesis of amino acids conserved among distantly related DNA polymerases we have shown that the N-terminal domain of φ29 DNA polymerase contains the 3′–5′ exonuclease activity and the strand-displacement capacity, whereas the C-terminal domain contains the synthetic activities (protein-primed initiation and DNA polymerization). Viral protein p6 stimulates the initiation of φ29 DNA replication. The structure of the protein p6—DNA complex has been determined, as well as the main signals at the φ29 DNA ends recognized by protein p6. The DNA binding domain of protein p6 has been studied. The results indicate that an α-helical structure located in the N-terminal region of protein p6 is involved in DNA binding through the minor groove. The φ29 protein p5 is the single-stranded DNA binding (SSB) protein involved in φ29 DNA replication, by binding to the displaced single-stranded DNA (ssDNA) in the replication intermediates. In addition, protein p5 is able to unwind duplex DNA. The properties of the φ29 SSB—ssDNA complex are described. Using the four viral proteins, terminal protein, DNA polymerase, protein p6 and the SSB protein, it was possible to amplify the 19285-bp φ29 DNA molecule by a factor of 4000 after 1 h of incubation at 30°C. The infectivity of the in vitro amplified DNA was identical to that of φ29 DNA obtained from virions.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 60 (1995), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Ground beef with 26.3% fat was cooked by browning/draining (BD), browning/rinsing (BR), and an oil-extraction method with (OA) or without (ON) meat broth added back. BR caused the most reduction of total fat and cholesterol, whereas ON and OA yielded less cooked meat than BD and BR. ON and OA cooked samples, compared to BD and BR samples, contained more polyunsaturated fatty acids and nonheme iron and had higher TBA values unon extended storage at 4°C. Trained sensory panelists rated BD or BR cooked ground beef more intense in positive flavor note (“cooked beef/brothy”) than ON or OA meat. Likewise, consumers tended to prefer meatloaf, spaghetti sauce, and chili prepared with BD or BR cooked ground beef to those prepared with ON or OA cooked meat.
    Type of Medium: Electronic Resource
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