Brian K. Hammer

The paper quantifies T6SS prevalence in Gram-negative bacteria using genome analysis and finds it is present in 41% of well-sampled genera.

This study establishes genetic tractability in Jeongeupia sacculi HS-3 by disrupting rpoS, showing it regulates biofilm formation under low-nutrient conditions but not general stress survival.

This study shows that highly antibiotic-resistant bacteria can inadvertently help susceptible strains survive, revealing an ecological cost to extreme resistance that limits its spread.

This study shows that increasing cell-substrate friction increases biofilm contact angle and decreases horizontal expansion rate.

This study shows that the horizontal expansion rate of bacterial colonies is controlled by the contact angle at the biofilm edge, validated through experimental measurements and theoretical modeling.

The paper develops a bioinformatic tool to identify new T6SS gene clusters in V. cholerae and demonstrates the function of a newly discovered effector protein.