Origin of globins and a mystery of myoglobin codon root symmetry

作者: Nora Ieviña , Gunårs Chipens

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摘要: The amino acid sequence 49-94 of myoglobin involved in heam binding has 74 % symmetric codon roots – the second letters. search for reason symmetry revealed that ancestor globin genes was not formed by exon shuffl ing, but multiplication a 21-membered nucleotide and it regular polynucleotide. repeat unit pile contemporary root posesses an inversion centre indicating evolved after origin gene. Its cause possible biological functions is mystery. A model coding gene suggested to be identical units separated 23 introns.

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