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Biomedical subjects

R Kleine

Publications and source records attributed to R Kleine.

At least 37 records · Page 2Linked to original sources
PubMed1975

[Purification of an anionic trypsin from the gastric juice of the crayfish Cambarus affinis say by means of affinity chromatography].

Beside other digestion enzymes the crayfish Cambarus affinis SAY possess an anionic trypsin. This enzyme could be separated from all the other proteins of the crude gastric juice by a single affinity chromatographic step on immobilized natural inhibitor. The dissociation of the thus produced enzyme-inhibitor complex was achieved by specific elution with ben-amidine. The soluble benzamidine-trypsin-complex was dialyzed and separated by gelfiltration on Sephadex G-50. Of the ligands used Trasylol proved to be the most effective one. Trypsin isolated by this ligand was in a discelectrophoretic homogeneous state. On the other hand, trypsin purified by Soybean trypsin inhibitor and Contrykal contains impurities.

Animals↗
PubMed1972

Dissoziation des mikrosomalen arylamidase-alkalischen phosphatase-komplexes aus rattennieren.

The high molecular weight arylamidase-alkaline phosphatase-complex from rat kidney microsomes [1] was carefully dissociated by means of treatment with several hydrolytic enzymes or by acidification. Trypsin, chymotrypsin and pronase cause a selective solubilization of the enzymes discernible at their different electrophoretic mobility in polyacrylamide gel. The lower migrating zone represents phosphatase, the faster migrating zone shows arylamidase activity (molecular weights 180,000 and 172,000, respectively). Incubation of the complex with papain, lipase, neuraminidase or hyaluronidase and incubation at acid conditions (pH optimum 5.0) in the absence of any enzyme also yields in the appearance of two protein bands. In contrast to the alkaline hydrolases the acid hydrolases, the pH 5-treatment and with a certain degree also the lipase liberate a second arylamidase zone lying in the phosphatese containing zone during polyacrylamide gel electrophoresis. Treatment with SDS and subsequent SDS-polyacrylamide gel electrophoresis also results in a dissociation of the complex, but only in one protein fragement (approx, molecular weight 205,000).

Journal Article↗