Abstract
A full-length C-reactive protein (CRP) cDNA clone has been isolated from a CBA/J-strain-mouse acute-phase liver library. The 1614-nucleotide cDNA specifies mRNA 5' and 3' untranslated regions of 81 and 858 bases respectively that flank 675 bases encoding mouse pre-CRP. The derived amino acid sequence predicts a 19-residue leader peptide followed by a 206-residue mature mouse CRP that shows considerable sequence identity with both human and rabbit CRP. Northern-blot analysis of mouse liver CRP mRNA concentrations after inflammatory stimuli and comparison with hepatic induction of mRNA for the major mouse acute-phase protein serum amyloid P component established that CRP, a major acute-phase reactant in human and rabbit, is a minor acute-phase reactant in mouse. The size and organization of the mouse CRP mRNA 5' and 3' untranslated regions are significantly different from those of human and rabbit CRP mRNA and may have implications for its anomalous minimal induction during acute inflammation.
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