SIGMA Agarose, low gelling temperature, BioReagent, for molecular biology

Synonyms: 2-Hydroxyethyl agarose

CAS No.: 39346-81-1

Application: Modified to produce lower gelling and melting points and gives convenient recovery and purification of DNA from low melting agarose gels. Radiolabeled DNA probes can be prepared directly in remelted agarose using DNA gel slices cut from low-melting agarose gels.
Cloning of restriction fragments into plasmids can be conveniently carried out directly in remelted agarose using DNA gel slices cut from low-melting agarose gels.
Gels exhibit low background fluorescence using ethidium bromide staining.

Analysis Note: The following is a list of properties associated with our agaroses:
Sulfate content - used as an indicator of purity, since sulfate is the major ionic group present.
Gel strength - the force that must be applied to a gel to cause it to fracture.
Gel point - the temperature at which an aqueous agarose solution forms a gel as it cools. Agarose solutions exhibit hysteresis in the liquid-to-gel transition - that is, their gel point is not the same as their melting temperature.
Electroendosmosis (EEO) - a movement of liquid through the gel. Anionic groups in an agarose gel are affixed to the matrix and cannot move, but dissociable counter cations can migrate toward the cathode in the matrix, giving rise to EEO. Since electrophoretic movement of biopolymers is usually toward the anode, EEO can disrupt separations because of internal convection.