Archaeal viruses, like their hosts, are found worldwide, including in extreme environments inhospitable to most life such as acidic hot springs, highly saline bodies of water, and at the bottom of the ocean.
Naoki Amano's 20 research works with 501 citations, including: Identification of promoter sequences using archaeal genomic sequences 2. Analysis of a meso-thermophile, Thermoplasma volcanium
Protein V is found only in mastadenoviruses. A few copies of the maturation protease (L3 23K, adenovirus protease/AVP/adenain) are packaged bound to the genome (Mangel and San Martín 2014).