[Study of albumin conformational changes in human serum using an immunoenzymatic technic using monoclonal antibodies].
The specificity of six peroxidase-labelled anti-albumin monoclonal antibodies was studied by allowing them to react with albumin-derived fragments of known structure comprising the whole albumin molecule. The epitopes corresponding to these antibodies were located on defined regions of the albumin molecule extending from the N to the C-terminal ends. These antibodies have been used for investigating by ELISA the conformational alterations of albumin molecule brought about by the N-B transition in twelve individual sera. The results do not show any significant differences between the sera. The N-B transition involves essentially the N-terminal portion of the albumin molecule. There also exists as modification of the C-terminal region which is however much less pronounced than the one in the N-terminal region. In addition, it is not observed when using isolated albumin.
Service d'Immunochimie des Protéines, Institut Pasteur, Paris.
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Lapresle
D000328:Adult; D000911:Antibodies, Monoclonal; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D011487:Protein Conformation; D012709:Serum Albumin / Q000032:analysis*
D000911:Antibodies, Monoclonal; D012709:Serum Albumin
Etude de modifications conformationnelles de l'albumine dans le sérum humain à l'aide d'une technique immunoenzymatique utilisant des anticorps monoclonaux.