Abstract
A full-length cDNA has been isolated for the murine homolog of the human HIRA protein, a member of the HIR family of nuclear proteins that is encoded from the chromosome 22 region critical for the DiGeorge syndrome. This family also contains Hir1p and Hir2p, two proteins identified as regulators of histone gene transcription in yeast. The murine and human amino acid sequences are 95.3% identical, with a striking 99.2% identity in the N-terminal WD repeat domain that is characteristic of the family. The two cDNAs are highly conserved within the coding regions, but also in the entire 5′ untranslated region and in a strikingly long stretch of nucleotides in the 3′ untranslated region.
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