Protein
Probable terminase, large subunit
Organism
Enterobacteria phage P7
Function
Component of the molecular motor that translocates genomic DNA in empty capsid during DNA packaging. Heterooligomerize with small terminase protein to be docked on capsid portal protein. Forms a ring-like structure through which genomic DNA is translocated into the capsid. May have or induce an endonuclease activity to cleave the genome concatemer after encapsidation.
Similarity
Belongs to the punalikevirus large terminase family.
Sequence
MARSCVTDPRWRELVALYRYDWIAAADVLFGKTPTWQQDEIIESTQQDGSWTSVTSGHGTGKSDMTSIIAILFIMFFPGARVILVANKRQQVLDGIFKYIKSNWATAVSRFPWLSKYFILTETSFFEVTGKGVWTILIKSCRPGNEEALAGEHADHLLYIIDEASGVSDKAFSVITGALTGKDNRILLLSQPTRPSGYFYDSHHRLAIRPGNPDGLFTAIILNSEESPLVDAKFIRAKLAEYGGRDNPMYMIKVRGEFPKSQDGFLLGRDEVERATRRKVKIAKGWGWVACVDVAGGTGRDKSVINIMMVSGQRNKRRVINYRMLEYTDVTETQLAAKIFAECNPERFPNITIAIDGDGLGKSTADLMYERYGITVQRIRWGKKMHSREDKSLYFDMRAFANIQAAEAVKSGRMRLDKGAATIEEASKIPVGINSAGQWKVMSKEDMKKKLNLHSPDHWDTYCFAMLANYVPQDEVLSVEDEAQVDEALAWLNE