A Heme‐Acquisition Protein Reconstructed with a Cobalt 5‐Oxaporphyrinium Cation and Its Growth‐Inhibition Activity Toward Multidrug‐Resistant Pseudomonas aeruginosa

Authors:
Publisher website
Google Scholar
Abstract
Using artificial hemes for the reconstruction of natural heme proteins represents a fascinating approach to enhance the bioactivity of the latter. We report the synthesis of various metal 5‐oxaporphyrinium cations as cofactors, and a cobalt 5‐oxaporphyrinium cation was successfully incorporated into the heme‐acquisition protein (HasA) secreted by Pseudomonas aeruginosa. We hypothesize that the oxaporphyrinium cation strongly binds to the HasA‐specific outer membrane receptor (HasR) due to its cationic charge, which prevents the subsequent acquisition of heme. In fact, the reconstructed HasA inhibited the growth of Pseudomonas aeruginosa and even of multidrug‐resistant P. aeruginosa.
Funding Information
  • Japan Society for the Promotion of Science (17H01190, 19KK0138, 17H05896, 18H02396, 18H02084, 20J11437, 21J15614)
  • Sumitomo Foundation

This publication has 30 references indexed in Scilit: