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  • Title: Production of 5' Nucleotide by Using Halophilic Nuclease H Preferentially Adsorbed on Flocculated Cells of the Halophile Micrococcus varians subsp. halophilus.
    Author: Onishi H, Kamekura M, Yokoi H, Kobayashi T.
    Journal: Appl Environ Microbiol; 1988 Nov; 54(11):2632-5. PubMed ID: 16347767.
    Abstract:
    A bioreactor with a column of flocculated cells of the moderate halophile Micrococcus varians subsp. halophilus which adsorbed the halophilic nuclease H was designed to be used in the production of 5' nucleotides from RNA. A remarkable characteristic of the flocculated cells was that they preferentially adsorbed much exogenous nuclease, excluding adsorbed 5' nucleotidase. Furthermore, desalting treatment of the flocculated cells in the presence of 2% MgSO(4) . 7H(2)O gave rise to selective inactivation of 5' nucleotidase without the loss of nuclease H activity, and 5'-guanylic acid was produced with the bioreactor.
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