Genome-wide synthetic lethality screen of Bam complex-associated genes in Escherichia coli.

Hundreds of synthetic-lethal interactions reveal that Bam complex activity in Escherichia coli is affected by outer membrane lipid composition and peptidoglycan synthesis genes.

• Why it matters: Understanding the specific functions of non-essential Bam-associated proteins is crucial for insights into bacterial outer membrane biogenesis and antibiotic resistance, yet remains incomplete.
• What they did: The study analyzed knockout strains of BamB, BamC, BamE, SurA, Skp, and DegP through phenotypic screening, conservation analysis, and high-throughput genetics, identifying key genetic interactions.
• The result: Findings suggest that Bam complex activity is linked to membrane lipid composition and peptidoglycan synthesis, indicating mechanisms that coordinate outer membrane protein biogenesis with other cellular growth processes.