TY  - RPRT
TI  - Viral proteins containing the purine NTP-binding sequence pattern.
AU  - A E Gorbalenya
AU  - E V Koonin
PY  - 1989
DO  - 10.1093/nar/17.21.8413
UR  - https://pubmed.ncbi.nlm.nih.gov/2555771/
ID  - 2555771
ER  -