thumb|Tailed bacteriophage structure: (1) head, (2) tail, (3) DNA, (4) capsid, (5) collar, (6) sheath, (7) tail fibres, (8) spikes, (9) base plate thumb|Transmission electron microscopy|Transmission electron micrograph of Gamma-Phage thumb|right|Illustrations of various caudoviricetes. Not to scale.
thumb|Tailed bacteriophage structure: (1) head, (2) tail, (3) DNA, (4) capsid, (5) collar, (6) sheath, (7) tail fibres, (8) spikes, (9) base plate thumb|Transmission electron microscopy|Transmission electron micrograph of Gamma-Phage thumb|right|Illustrations of various caudoviricetes. Not to scale.
Caudoviricetes is a class of viruses known as tailed viruses and head-tail viruses (cauda is Latin for "tail"). It is the sole representative of its own phylum, Uroviricota (from ouros (ουρος), a Greek word for "tailed" + -viricota). Under the Baltimore classification scheme, the Caudoviricetes are group I viruses as they have double stranded DNA (dsDNA) genomes, which can be anywhere from 18,000 base pairs to 500,000 base pairs in length. The virus particles have a distinct shape; each virion has an icosahedral head that contains the viral genome, and is attached to a flexible tail by a connector protein. The order encompasses a wide range of viruses, many containing genes of similar nucleotide sequence and function. However, some tailed bacteriophage genomes can vary quite significantly in nucleotide sequence, even among the same genus. Due to their characteristic structure and possession of potentially homologous genes, it is believed these viruses possess a common origin.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).