Identification of alpha 2-macroglobulin conformational intermediates by electron microscopy and image analysis. Comparison of alpha 2-macroglobulin-thrombin and alpha 2-macroglobulin reacted with cis-dichlorodiammineplatinum(II) and trypsin.
نویسندگان
چکیده
منابع مشابه
Human Plasma Alpha 2-macroglobulin
Activation of plasma kallikrein arginine esterase activity by kaolin resulted in peak activity at 1 min of incubation and a 50% reduction in activity at 5 min in normal plasma, and 30% reduction in the plasma of patients with hereditary angioneurotic edema who lacked the C1 inactivator. The peak esterolytic activity was inhibited by soybean trypsin inhibitor whereas the 5 min activity was resis...
متن کاملAlpha-2-Macroglobulin: A Physiological Guardian
Alpha macroglobulins are large glycoproteins which are present in the body fluids of both invertebrates and vertebrates. Alpha-2macroglobulin (a2M), a key member of alpha macroglobulin superfamily, is a high-molecular weight homotetrameric glycoprotein. a2Mhasmany diversified and complex functions, but it is primarily known by its ability to inhibit a broad spectrumof proteaseswithout the direc...
متن کاملAlpha 2 macroglobulin state in acute pancreatitis. Raised values of alpha 2 macroglobulin-protease complexes in severe and mild attacks.
Plasma values of C reactive protein, alpha 1 proteinase inhibitor, alpha 2 macroglobulin, and complexed alpha 2 macroglobulin have been determined in serial samples from 27 patients with acute pancreatitis. Complexed alpha 2 macroglobulin was measured by a novel enzyme linked immunosorbent assay with a monoclonal antibody specific for the complexed form. Patients with severe illness had lower c...
متن کاملHigh Serum Alpha-2-Macroglobulin Level in Patients with Osteonecrosis of the Femoral Head
Background: Diagnosis of osteonecrosis of the femoral head (ONFH) is complicated due to the lack of reliable serum biomarkers. Up-regulation of alpha-2-macroglobulin (A2M) gene has been reported in glucocorticoid-induced ANFH rat model. This study aimed to investigate whether the serum level of alpha-2-macroglobulin (A2M) can be used for ONFH diagnosis. Methods: Serum protein capillary elect...
متن کاملThe interaction between alpha-2-macroglobulin and cationic aspartate aminotransferase.
On starch-gel or polyacrylamide-gel electrophoresis of human serum, a supernumerary zone of aspartate aminotransferase activity may be demonstrated, migrating with the slow alpha(2) protein zone. This appearance is due only to cationic aspartate aminotransferase, bound by alpha(2)-macroglobulin. The binding is strongly potentiated by dilute borate buffers.
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1992
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)42701-9