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Evolution of prothrombin: isolation and characterization of the cDNAs encoding chicken and hagfish prothrombin.

The cDNA sequences of chicken and hagfish prothrombin have been determined. The sequences predict that prothrombin from both species is synthesized as a prepro-protein consisting of a putative Gla domain, two kringle domains, and a two-chain protease domain. Chicken and hagfish prothrombin share 51.6% amino acid sequence identity (313/627 residues). Both chicken and hagfish prothrombin are structurally very similar to human, bovine, rat, and mouse prothrombin and all six species share 41% amino acid sequence identity. Amino acid sequence alignments of human, bovine, rat, mouse, chicken, and hagfish prothrombin suggest that the thrombin B-chain and the propeptide-Gla domain are the regions most constrained for the common function(s) of vertebrate prothrombins.[1]

References

  1. Evolution of prothrombin: isolation and characterization of the cDNAs encoding chicken and hagfish prothrombin. Banfield, D.K., Irwin, D.M., Walz, D.A., MacGillivray, R.T. J. Mol. Evol. (1994) [Pubmed]
 
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