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  • Title: Sequence analysis of canine and equine ferritin H and L subunit cDNAs.
    Author: Orino K, Miura T, Muto S, Watanabe K.
    Journal: DNA Seq; 2005 Feb; 16(1):58-64. PubMed ID: 16040348.
    Abstract:
    Canine and equine ferritin H and L subunit cDNA clones were obtained using reverse transcriptase-polymerase chain reaction (RT-PCR) and TA cloning from various tissues. Canine liver and spleen ferritin H subunit cDNA clones contained an open reading frame for the same 182-amino acid protein as that reported in canine brain ferritin H subunit cDNA although there were substitutions in the 3'-noncoding regions. Ferritin L subunit cDNA clones from canine liver, spleen, and kidney showed identical coding sequences encoding the 174-amino acid protein except for a single nucleotide substitution in kidney (C474G). The H subunit nucleotide sequences of equine leukocyte and spleen were identical to the fragment encoding the 181-amino acid protein in equine peripheral blood mononuclear cells, with the exception of one substitution seen in both leukocyte and spleen sequences (C234T). The nucleotide sequence of equine leukocyte ferritin L subunit showed 7 substitutions compared with the published equine liver L subunit sequence with two substitutions at positions 281 and 282 resulting in an amino acid substitution of P94L. The amino acid residues involved in the ferroxidase center and in iron nucleation were perfectly conserved in H and L subunits of canine and equine ferritins, respectively.
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