The 1 Felixviridae phage

a NEW proposed family of phages

RothD

Subfamily: Maevirinae

Genus: Nakavirus

Species: Nakavirus sapi

About Felixviridae

RothD was isolated against gut-associated ST-type ST323 (K. pneumoniae).

It is a temperate phage that was unable to be classified into existing phage taxa, we therefore went on a journey to classify it according to ICTV guidelines.

Given their predicted association to gut-related strains, we wanted to see if we could identify any relatives in the Gut Phage Database.

We found it clustered with 132 metagenomic viral assemblies from the GPD.

BLASTn network with high-quality phages of the GPD.

We also found Felixviridae phages are associated with the human gut, see our publication for further details: preprint

We submitted a taxonmic proposal to the ICTV on June 2024, and it got approved in 2025, see the publication here.

Use these phages for your research!