Polymorphic quaternary organization of the Bacillus subtilis bacteriophage SPP1 replicative helicase (G40 P).

@article{Barcena1998PolymorphicQO,
  title={Polymorphic quaternary organization of the Bacillus subtilis bacteriophage SPP1 replicative helicase (G40 P).},
  author={Martin Barcena and Carmen San Mart{\'i}n and F Christoph Weise and Silvia Ayora and Juan Alonso and Jos{\'e} Mar{\'i}a Carazo},
  journal={Journal of molecular biology},
  year={1998},
  volume={283 4},
  pages={809-19}
}
The Bacillus subtilis bacteriophage SPP1 gene 40 product (G40P), which belongs to the DnaB-like family of helicases, is essential for SPP1 genome replication. The active form of the enzyme is the hexamer, capable of DNA unwinding with a 5' to 3' polarity fueled by the hydrolysis of a nucleoside 5'-triphosphate. We have used electron microscopy of negatively stained G40P samples and image processing techniques to study the structural characteristics of the hexameric assemblies of this protein… CONTINUE READING

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