TABS (CAS 54960-65-5)

TABS, or N-Tris(hydroxymethyl)methyl-3-aminopropanesulfonic acid, is a zwitterionic biological buffer known for its exceptional buffering capacity in the pH range of 7.7 to 9.1. This compound, characterized by the presence of both a sulfonic acid group and a tertiary amino group within the same molecule, enables it to function effectively under a variety of biological conditions. The mechanism of action of TABS as a buffer involves its ability to stabilize pH by reacting with both acids and bases. This dual functionality allows it to absorb excess hydrogen ions or donate them, maintaining a stable pH environment crucial for many biological reactions. In research, TABS is frequently used in biochemical assays that require a neutral to slightly alkaline pH. One of the primary uses of TABS is in protein purification processes where it helps to maintain the integrity and activity of proteins by preventing pH shifts that could lead to denaturation. Additionally, it has been employed in the formulation of buffer solutions for electrophoresis and other enzymatic assays where precise pH control is essential for accurate protein migration and activity. Its ability to provide a consistent pH environment with minimal interference in ionic strength or biological activity makes it a preferred choice for researchers working with sensitive biological materials.