DEOXYRIBONUCLEIC-ACID POLYMERASE FROM THE MARINE PSEUDOMONAS SP BAL-31

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1980
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A DNA-dependent DNA polymerase (DNA nucleotidyltransferase) was purified 3000-fold from the marine Pseudomonas sp. BAL-31. The MW of the native enzyme was estimated by glycerol gradient sedimentation to be 110,000. The enzyme migrated in sodium dodecyl sulfate-acrylamide gels as a single polypeptide with a MW of 105,000. An absolute requirement for divalent cation was satisfied by Mg2+ or Mn2+ at concentrations of 1 mM. Monovalent cations at concentrations higher than 50 mM showed an inhibitory effect. The polymerase activity was resistant to N-ethylmaleimide and showed a wide pH optimum.
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https://repositorio.uc.cl/handle/11534/100066
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