Naturally occurring mutations in human steroid 21-hydroxylase influence adrenal autoantibody binding.

Abstract excerpt

Human 21-hydroxylase (21-OH) genes containing various mutations, truncations, and deletions were expressed in yeast, and autoantibody binding was studied by Western blotting using patient sera and rabbit antibodies to 21-OH. 21-OH autoantibodies in 13 Addisonian sera showed a marked reduction in their ability to recognize 21-OH mutated at Pro453-->Ser (mean +/- SD, 31 +/- 9% of binding to wild type), whereas the...

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