Armata Publishes Cryo-EM Atlas of Ar-KM Phage Tied to AP-PA02
Los Angeles – September 08, 2026 -- Armata Pharmaceuticals, Inc. (NYSE American: ARMP) said a peer-reviewed paper in the Journal of Molecular Biology has mapped near-atomic resolution structures of eleven proteins in its Ar-KM bacteriophage, a Pseudomonas aeruginosa-targeting phage tied to the company's late-stage AP-PA02 program.
Researchers built atomic models of eleven structural proteins using cryo-electron microscopy
The study, titled "Insights into Genome Ejection by a Therapeutic phiKMV-like Bacteriophage," combined cryo-electron microscopy, proteomics and bioinformatics to capture three distinct states of the Ar-KM phage particle from a single purified preparation. The paper is published as J Mol Biol. 2026 Nov 1; 438(21):169993. AP-PA02, an inhaled bacteriophage candidate, has completed Phase 2 studies in cystic fibrosis and non-CF bronchiectasis patients with chronic pulmonary P. aeruginosa infection.