State microbe is noteworthy because it is: the first significant antibiotic discovered after penicillin; the first systemic antibiotic discovered in America; the first antibiotic active against tuberculosis; first-line treatment for plague. Moreover, New Jersey was the home of Selman Waksman, who was awarded the Nobel Prize in Physiology or Medicine for his systematic studies of antibiotic production by "S. griseus" and other soil microbes. On May 15, 2017, Senate Bill 3190 (S3190) was introduced by Senator Samuel D. Thompson (R-12); the bill designates "Streptomyces griseus" as the New Jersey State Microbe, to be added to the state's other state symbols. On June
A22 (antibiotic) A22 (antibiotic) A22, also known as "S"-(3,4-dichlorbenzyl)isothiourea, is a chemical compound with antibiotic activity. It is colorless, hygroscopic, and light-sensitive. A22 acts as a reversible inhibitor of the bacterial cell wall protein MreB, causing bacterial rod-shaped cells to form coccoid cells. The antibiotic activity of A22 has been studied primarily in "Pseudomonas aeruginosa." However, A22 does not seem to be useful as an antibiotic in humans due to its cytotoxic and genotoxic effects on human peripheral blood mononuclear cells (PBMCs). Despite its cytotoxic effects in human cells, A22 has been used as a research tool to investigate the bacterial cytoskeleton.