PMID: 3666Feb 1, 1976

Purification and characterization of mouse interferon with novel affinity sorbents

Journal of Virology
M W DaveyW A Carter


Several novel selective sorbents for mouse interferon are described that exploit the hydrophobic property and glycoprotein nature of this molecule. Low-molecular-weight ligands (hydrocarbons) and high-molecular-weight ligands (bovine serum albumin) immobilized on agarose bind selectively mouse L-cell interferon. The high selectivity of binding is due primarily to a hydrophobic effect, although electrostatic forces are also apparently involved. Mouse L-cell interferon binds to immobilized serum albumin and can be completely recovered by raising the ionic strength of the eluant. The specific activity of interferon preparations can be increased 2,000-fold to a value of 3 x 10(8) reference units per mg of protein in a single step with full recovery of the antiviral activity. A selective adsorption, although to a lesser degree, can be also obtained on hydrocarbon-coated agarose (Affi-Gel 202), resulting in 300-fold purification on desorption. The existence of two major components of mouse interferon was revealed upon its chromatography on the following sorbents: (i) bovine serum albumin-agarose, (ii) omega-carboxypentyl-agarose; and (iii) Bandeiraea simplicifolia lectin-agarose. This report thus provides for the first time a means f...Continue Reading


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