The terminase small subunit binds to the packaging initiation site and regulates the ATPase activity of the terminase large subunit (By similarity). The terminase lies at a unique vertex of the procapsid and is composed of two subunits, a small terminase subunit involved in viral DNA recognition (packaging sequence), and a large terminase subunit (By similarity). Both terminase subunits heterooligomerize and are docked on the portal protein to form the packaging machine (By similarity).

Belongs to the P23virus small terminase family.

171 amino acids

MSVSFRDRVLKLYLLGFDPSEIAQTLSLDAKRKVTEEEVLHVLAEARELLSALPSLEDIRAEVGQALERARIFQKDLLAIYQNMLRNYNAMMEGLTEHPDGTPVIGVRPADIAAMADRIMKIDQERITALLNSLKVLGHVGSTTAGALPSATELVRVEELVAEVVDEAPKT

18.8 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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