Purification of placental alkaline phosphatase by immunoadsorption

Purification of Alkaline Phosphatase

8. An increase in the rate of progression of the bands down the column decreases the sharpness of the bands. On 'Zeo-Karb 215' (40-60 mesh/in.) a rate ofprogression of 10-15 cm./hr. gave satisfactory results. 9. Equations have been derived permitting the calculation ofthe proportion ofthe column occupied by a component, the width ofthe boundaries and the expected yield of pure components in sep...

Purification of kidney alkaline phosphatase.

Placental alkaline phosphatase as the placental IgG receptor.

We review data from our studies of the physiological role of placental alkaline phosphatase (PLAP) and report that, in addition to functioning in catalysis, PLAP has the capacity to bind the Fc portion of human IgG. The dissociation constant for the interaction (3.86 mumol/L) indicates that the PLAP-IgG complex probably occurs in vivo. Furthermore, the electrophoretic and immunochemical propert...

Purification and properties of molecular-weight variants of human placental alkaline phosphatase.

1. Alkaline phosphatase of human placenta was purified by a procedure involving homogenization with tris buffer, pH8.6, extraction with butanol, ammonium sulphate fractionation, exposure to heat, ethanol fractionation, gel filtration, triethylaminoethylcellulose anion-exchange chromatography, continuous curtain electrophoresis on paper and equilibrium dialysis. Methods for both laboratory-scale...

Characterization of KB cell alkaline phosphatase. Evidence of similarity to placental alkaline phosphatase.

The alkaline phosphatase from KB cells was purified, characterized, and compared to placental alkaline phosphatase, which it resembles immunologically. Two nonidentical nonomeric subunits of the KB phosphatase were found. The two subunits, which have apparent molecular weights of 64,000 and 72,000, can be separated on polyacrylamide gels containing sodium dodecyl sulfate. The Mr = 64,000 KB sub...