IPTG (Isopropyl β-D-Thiogalactoside) is a molecular biology reagent used as an inducer of gene expression in systems utilizing the lac operon. IPTG is not metabolized by bacterial cells, which makes it a potent inducer of gene expression without being consumed in the process. This 1g bottle is ideal for laboratory experiments involving the expression of recombinant proteins or enzymes in bacteria or other systems. By adding IPTG to culture media, researchers can activate the expression of genes under the control of the lac promoter, facilitating the study of protein function, enzyme activity, or gene regulation. IPTG is a standard reagent used in cloning, protein purification, and gene expression research.