Divergence of Parartemia and Artemia haemoglobin genes |
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Authors: | M Coleman MC Geddes CNA Trotman |
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Institution: | (1) Biochemistry Department, University of Otago, Dunedin, New Zealand;(2) Zoology Department, University of Adelaide, 5005 Adelaide, South Australia |
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Abstract: | Parartemia is a genus of brine shrimp endemic to Australia which is related to the more widespread and economically importantArtemia sp. The expression of a multimeric haemoglobin molecule inArtemia is well documented but inParartemia only trace levels of a possible haemoglobin have been observed. In this paper we describe the DNA sequence of a domain of
a haemoglobin molecule inParartemia. The derived amino acid sequence suggests that the possible date of divergence about 85 million years ago of the two genera
predates the divergence of the C and T polymers ofArtemia haemoglobin. This date would correlate with the physical and temporal isolation of Australia in the late Mesozoic. |
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Keywords: | Artemia divergence DNA haemoglobin Parartemia protein sequence |
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