cl01720: Phage_Nu1 Superfamily (this model, PSSM-Id:294991 is obsolete)
Phage DNA packaging protein Nu1
Terminase, the DNA packaging enzyme of bacteriophage lambda, is a heteromultimer composed of subunits Nu1 and A. The smaller Nu1 terminase subunit has a low-affinity ATPase stimulated by non-specific DNA.
Jiyao W et al.(2023). "The conserved domain database in 2023.",