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Journal of Virology, June 1999, p. 5181-5185, Vol. 73, No. 6
Division of Infectious Disease,
Received 23 February 1999/Accepted 2 March 1999
The sequenced gammaherpesviruses each contain a single viral
bcl-2 homolog (v-bcl-2) which may encode a
protein that functions in preventing the apoptotic death of
virus-infected cells. Epstein-Barr virus (EBV), a gammaherpesvirus
associated with several lymphoid and epithelial malignancies, encodes
the v-Bcl-2 homolog BHRF1. In this report the previously
uncharacterized BALF1 open reading frame in EBV is identified as having
significant sequence similarity to other v-bcl-2 homologs
and cellular bcl-2. Transfection of cells with a BALF1 cDNA
conferred apoptosis resistance. Furthermore, a recombinant green
fluorescent protein-BALF1 fusion protein suppressed apoptosis and
associated with Bax and Bak. These results indicate that EBV encodes a
second functional v-bcl-2.
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Epstein-Barr Virus Encodes a Novel Homolog of
the bcl-2 Oncogene That Inhibits Apoptosis and Associates
with Bax and Bak
*
Corresponding author. Mailing address: Department of
Adult Oncology, Dana-Farber Cancer Institute, Boston, MA 02115. Phone: (617) 632-4273. Fax: (617) 632-4257. E-mail:
wmarshall{at}partners.org.
Journal of Virology, June 1999, p. 5181-5185, Vol. 73, No. 6
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
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