Metalloporphyrins [Mn(III) and In(III)] are investigated as active polymer fihn components in the design of reversible anion-selective optical sensors. The optical measurements are made by casting thin plasticiied polymer films (PVC, polyurethane, etc.) containing the given metalloporphyrhts on glass plates. When bathed in aqueous test solutions, the optical response of such fihns is based upon...

The enzyme BchM (S-adenosyl-L-methionine:magnesium-protoporphyrin IX O-methyltransferase) from Rhodobacter capsulatus catalyses an intermediate reaction in the bacteriochlorophyll biosynthetic pathway. Overexpression of His(6)-tagged protein in Escherichia coli resulted in the majority of polypeptide existing as inclusion bodies. Purification from inclusion bodies was performed using metal-affi...