An unusually small dimer interface is observed in all available crystal structures of cytosolic sulfotransferases. Weitzner, B., Meehan, T., Xu, Q., & Dunbrack Jr, R. L Proteins: Structure, Function, and Bioinformatics, 75(2):289–295, Wiley Subscription Services, Inc., A Wiley Company Hoboken, 2009.
bibtex   
@article{weitzner2009unusually,
  title={An unusually small dimer interface is observed in all available crystal structures of cytosolic sulfotransferases},
  author={Weitzner, Brian and Meehan, Thomas and Xu, Qifang and Dunbrack Jr, Roland L},
  journal={Proteins: Structure, Function, and Bioinformatics},
  volume={75},
  number={2},
  pages={289--295},
  year={2009},
  publisher={Wiley Subscription Services, Inc., A Wiley Company Hoboken}
}

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