Method for obtaining the domainname of basal membrane collagen and immunological determination of basal membrane material and car bodies,

摘要

The present invention provides human characterized by a molecular weight of about 170,000 Dalton, a hexameric structure with monomeric subunits with a molecular weight of about 28,000 Dalton and a carbohydrate content of about 2%.PPThe present invention provides a process for obtaining and purifying globular domain NC1 of basal membrane collagen, wherein human or animal tissue is subjected to a first limiting treatment with bacterial collagenase, the degradation products obtained are separated from non-collagen proteins by chromatography on a weakly basic anion exchanger, the collagen degradation products are then subjected to a second collagenase digestion at an elevated temperature and the globular domain NC1 is purified by molecular sieve fractionation.PPFurthermore, the present invention is concerned with the use of this for the determination in body fluids in the case of the use of their antibodies, as well as far the detection of antibodies directed thereagainst in body fluids.