Used to formulate CAPS buffer, a zwitterionic buffer useful in the range of pH 7.9-11.1. CAPS buffer is widely used in Western and immunoblotting experiments as well as protein sequencing and identification. Used in the electro transfer of proteins to PVDF (sc-3723) or nitrocellulose membranes (sc-3718, sc-3724). The high pH of this buffer makes it useful for the transfer of proteins with a pI > 8.5. and minimal reactivity with enzymes or proteins, minimal salt effects.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Applications
Used to formulate CAPS buffer, a zwitterionic buffer useful in the range of pH 7.9-11.1. CAPS buffer is widely used in Western and immunoblotting experiments as well as protein sequencing and identification. Used in the electro transfer of proteins to PVDF (sc-3723) or nitrocellulose membranes (sc-3718, sc-3724). The high pH of this buffer makes it useful for the transfer of proteins with a pI>8.5. and minimal reactivity with enzymes or proteins, minimal salt effects.
Solubility
Highly water soluble (100 g/L) at 20°C, and methanol (1%).
Notes
Store away from oxidizing agents. Keep the container tightly sealed and store in cool, dry condition in well ventilated place.
RUO – Research Use Only
Jelena Zaitseva.; I Barry Holland.; Lutz Schmitt. The role of CAPS buffer in expanding the crystallization space of the nucleotide-binding domain of the ABC transporter haemolysin B from Escherichia coli.Acta Crystallogr D Biol Crystallogr.2004,60(6), 1076-1084.
Daniele de Sanctis.; Sylvia Dewilde.; Clemens Vonrhein.; Alessandra Pesce.; Luc Moens.; Paolo Ascenzi.; Thomas Hankeln.; Thorsten Burmester.; Marco Ponassi.; Marco Nardini.; Martino Bolognesi. Bishistidyl heme hexacoordination, a key structural property in Drosophila melanogaster hemoglobin.J Biol Chem.2005,280,(29), 27222-27229.
Buffer, pKa = 10.40 at 20o: Biochemistry, 5, 467 (1966).