Restriction endonucleases, or restriction enzymes, are proteins that cut DNA at specific recognition sequences, usually palindromic. Found naturally in bacteria, they serve as a defense mechanism by cleaving foreign DNA, such as that of viruses. Each enzyme recognizes a particular sequence of nucleotides and cuts at or near this site, […]
Chromatography is a laboratory technique used to separate, identify, and analyze components in a mixture. It involves a stationary phase and a mobile phase. As the mixture moves through the stationary phase, different components travel at different rates, leading to separation. Types include gas, liquid, paper, and thin-layer chromatography, each […]
Column chromatography is a technique used to separate and purify individual compounds from a mixture. It involves a column filled with a stationary phase (usually silica gel or alumina) through which the mixture is passed along with a mobile phase (a solvent or solvent mixture). As the mixture moves through […]
Gas Chromatography (GC) is a powerful analytical technique used to separate, identify, and quantify volatile compounds in a mixture. In GC, the sample is vaporized and carried by an inert gas (the mobile phase) through a column packed with a stationary phase. As the sample travels through the column, its […]
High-Performance Liquid Chromatography (HPL instrumentation includes a solvent reservoir, pump, injector, column, detector, and data system. The pump delivers the mobile phase through the column, where sample components separate. The detector measures the separated components, converting signals into data for analysis. HPLC is crucial in chemical, pharmaceutical, and biological research. […]