MHV-3 induced prothrombinase is encoded by musfiblp. Academic Article uri icon


  • Previously, we demonstrated induction of a unique macrophage prothrombinase, PCA, in MHV-3 infected BALB/cJ mice. By immunologic screening, a clone representing PCA was isolated from a cDNA library and sequenced. The sequence identified this clone as representing part of a gene, musfiblp, that encodes a fibrinogen-like protein. Six additional clones were isolated, and one clone, p11-3-1, encompassed the entire coding region of musfiblp. Murine macrophages did not constitutively express musfiblp, but when infected with MHV-3, synthesized musfiblp-specific mRNA. Musfiblp mRNA induction was earlier and significantly greater in BALB/cJ than A/J macrophages. Prothrombinase activity was demonstrate when musfiblp was expressed from p11-3-1 in RAW 264.7 cells. These data suggest that musfiblp encodes the MHV-induced prothrombinase.

published proceedings

  • Adv Exp Med Biol

author list (cited authors)

  • Parr, R. L., Fung, L., Reneker, J., Myers-Mason, N., Leibowitz, J. L., & Levy, G.

citation count

  • 5

complete list of authors

  • Parr, RL||Fung, L||Reneker, J||Myers-Mason, N||Leibowitz, JL||Levy, G

publication date

  • January 1995