Assaying protein fragments in body fluids

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...

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435 71, 435 792, 435 794, 435 795, 436518, 436532, 530323, 530326, 530327, 530328, 530329, 530356, 5303881, 5303891, G01N 3353

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06117646&

ABSTRACT:
Type I collagen degradation products are assayed in a body fluid by conducting a competition immunoassay in which sample molecules compete with a peptide or isomerized peptide in binding to an immunological binding partner for the peptide or isomerized peptide respectively, wherein the peptide or isomerized peptide comprises the amino acids AHDGGR optionally extended at the N-terminal end with one or more amino acids that do not form a contiguous sequence with AHDGGR in type 1 collagen, and wherein D represents aspartic acid or .beta.-aspartic acid. The peptide C(X).sub.n AHDGGR, where X is any amino acid and n is preferably from 4 to 6 is provided for use in such assays and in diagnostic assay kits.

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