@misc{indiciae065eb53d5ba1,
  title = {Viral proteins containing the purine NTP-binding sequence pattern.},
  author = {A E Gorbalenya and E V Koonin},
  year = {1989},
  doi = {10.1093/nar/17.21.8413},
  url = {https://pubmed.ncbi.nlm.nih.gov/2555771/},
  note = {Source identifier: 2555771}
}