cDNA cloning and inducible expression during pregnancy of the mRNA for rabbit pulmonary prostaglandin omega-hydroxylase (cytochrome P-450p-2).

S. Matsubara, S. Yamamoto, K. Sogawa, N. Yokotani, Y. Fujii-Kuriyama, M. Haniu, J. E. Shively, O. Gotoh, E. Kusunose, M. Kusunose

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    Abstract

    We have isolated cDNA clones of the mRNA for prostaglandin omega-hydroxylase (cytochrome P-450p-2) (Yamamoto, S., Kusunose, E., Ogita, K., Kaku, M., Ichihara, K., and Kusunose, M. (1984) J. Biochem. (Tokyo) 96, 593-603) in rabbit lung by using synthetic oligonucleotides as probes. The cDNA sequence contains an open reading frame of 1,470 nucleotides, the first 9 amino acids of which correspond to the residues 17-25 of cytochrome P-450p-2 determined from protein analysis. The predicted primary structure contains amino acid sequences of 23 tryptic fragments of cytochrome P-450p-2 and the deduced amino acid composition is in agreement with that determined from the purified protein. The complete polypeptide, including residues 1-16, contains 506 amino acids with a calculated molecular weight of 58,515. Cytochrome P-450p-2 shared 74% amino acid similarity with rat hepatic lauric acid omega-hydroxylase (cytochrome P-450LA omega) (Hardwick, J.P., Song, B.-J., Huberman, E., and Gonzalez, F. J. (1987) J. Biol. Chem. 262, 801-810), whereas it showed less than 25% similarity to other forms of cytochrome P-450, indicating that the two cytochrome P-450s constitute a unique cytochrome P-450 gene family. DNA blot analysis of the total genomic DNA of rabbits suggest the presence of several genes or gene-like DNA sequences which cross-hybridized with the cloned cDNA. RNA blot analysis showed that progesterone treatment increased the amount of mRNA hybridizable to the cDNA by about 100-fold in the lung of rabbits as compared with the basal level without the treatment. This high level of the mRNA was also observed in the lung of pregnant rabbits.

    Original languageEnglish
    Pages (from-to)13366-13371
    Number of pages6
    JournalThe Journal of biological chemistry
    Volume262
    Issue number27
    Publication statusPublished - 1987 Sep 25

    ASJC Scopus subject areas

    • Biochemistry
    • Molecular Biology
    • Cell Biology

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    Matsubara, S., Yamamoto, S., Sogawa, K., Yokotani, N., Fujii-Kuriyama, Y., Haniu, M., Shively, J. E., Gotoh, O., Kusunose, E., & Kusunose, M. (1987). cDNA cloning and inducible expression during pregnancy of the mRNA for rabbit pulmonary prostaglandin omega-hydroxylase (cytochrome P-450p-2). The Journal of biological chemistry, 262(27), 13366-13371.