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Association of mouse fibrinogen-like protein with murine hepatitis virus-induced prothrombinase activity.


ABSTRACT: Previously, we demonstrated induction of a unique macrophage prothrombinase during infection of BALB/cJ mice by mouse hepatitis virus strain 3 (MHV-3). By immunologic screening, a clone representing this prothrombinase 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 demonstrated when musfiblp was expressed from p11-3-1 in RAW 264.7 cells. These data suggest that musfiblp encodes the MHV-induced prothrombinase.

SUBMITTER: Parr RL 

PROVIDER: S-EPMC189320 | biostudies-other | 1995 Aug

REPOSITORIES: biostudies-other

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Association of mouse fibrinogen-like protein with murine hepatitis virus-induced prothrombinase activity.

Parr R L RL   Fung L L   Reneker J J   Myers-Mason N N   Leibowitz J L JL   Levy G G  

Journal of virology 19950801 8


Previously, we demonstrated induction of a unique macrophage prothrombinase during infection of BALB/cJ mice by mouse hepatitis virus strain 3 (MHV-3). By immunologic screening, a clone representing this prothrombinase 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. Murin  ...[more]

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