Abstract
We have purified apolipoprotein C-II (apo C-II) from cynomolgus monkey plasma, prepared antibody against it and used the antibody to isolate a cDNA containing the complete coding sequence for cynomolgus monkey apo C-11. Sequence analysis indicated that the monkey apo C-11 cDNA was 200 by longer than the human and the difference in size was all in the 5° untranslated region of the mRNA. This was confirmed by Northern analysis of human and monkey RNA. There was an open reading frame in the monkey apo C-11 cDNA sequence encoding a preprotein of 101 amino acids — identical in size to the human protein. The carboxyl terminal 44 amino acids of the protein were 100% homologous to the human apo C-11 amino acid sequence indicating evolutionary conservation of both structure and function. However, the amino terminal 35 amino acids of the protein were only 75% homologous and the amino terminal 19 amino acids were only 58% homologous to the human sequence. The amino acid sequence derived from the nucleotide sequence predicts a more basic protein than the human apo C-11 and this is confirmed by isoelectric focusing and immunoblotting.
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Whitted, B.E., Castle, C.K., Polites, H.G. et al. Purification, cloning and nucleotide sequence determination of cynomolgus monkey apolipoprotein C-11: comparison to the human sequence. Mol Cell Biochem 90, 69–79 (1989). https://doi.org/10.1007/BF00225222
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DOI: https://doi.org/10.1007/BF00225222