From microcin sequence to function: linking sequence variation to antimicrobial activity

Active Project Grant Awarded Last action

Award ID
R56AI179799
Recipient
Awarding agency
Obligated
$1,379,734

Award facts

Assistance listing
93.855 Allergy and Infectious Diseases Research
Completion date 80% complete
Originally
Place of performance
Austin, TX 78759, USA

Award details come from USAspending.gov.

Description

Abstract
New approaches to antibiotic development are needed to combat multidrug-resistant bacteria, and especially gram-negative pathogens. The gram-negative outer membrane prevents most molecules from entering the cell and is one of the greatest hurdles to new antibiotic development. A remarkable strategy to overcome this permeability barrier is shown by the new clinical antibiotic cefiderocol, which binds outer membrane siderophore receptors and uses active transport systems to pull itself into the periplasm. Using energy-coupled import allows otherwise exclude molecules, like the antibacterial component of cefiderocol, to enter bacteria. Unfortunately, few molecules capable of this translocation have been identified, and we have been largely limited to using siderophore conjugates to develop these innovative trojan horse antibiotics. Our work on the understudied class of bacteriocins called microcins provides a rare opportunity to study a broader class of antibacterials with this membrane translocation ability. Microcins are small antibacterial proteins (

Transactions

Action Obligated Date
Amendment $0
Amendment $72,618
Amendment $653,558
Original award $653,558

Quick answers

Who received award R56AI179799?

R56AI179799 was awarded to University Of Texas At Austin by National Institute of Allergy and Infectious Diseases (National Institutes of Health) on June 24, 2024.

How much is award R56AI179799 worth?

$1,379,734 has been obligated on R56AI179799.

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