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J. Biol. Chem., Vol. 276, Issue 45, 41963-41968, November 9, 2001
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From the Department of Biology, McGill University,
Montreal, Quebec H3A 1B1, Canada
The discovery that vertebrate retroviruses could
transduce cellular sequences was central to cancer etiology and
research. Although not well documented, transduction of cellular
sequences by retroelements has been suggested to modify cellular
functions. The maize Bs1 transposon was the first
non-vertebrate retroelement reported to have transduced a portion of a
cellular gene (c-pma). We show that Bs1 has, in
addition, transduced portions of at least two more maize cellular
genes, namely for 1,3-
A Novel Hybrid Open Reading Frame Formed by Multiple Cellular
Gene Transductions by a Plant Long Terminal Repeat
Retroelement*,
-glucanase (c-bg) and
1,4--xylan endohydrolase (c-xe). We also show that
Bs1 has maintained a truncated gag
domain with similarity to the magellan gypsy-like long
terminal repeat retrotransposon and a region that may correspond to an
env-like domain. Our findings suggest that, like oncogenic
retroviruses, the three transduced gene fragments and the Bs1
gag domain encode a fusion protein that has the potential to be
expressed. We suggest that transduction by retroelements may facilitate
the formation of novel hybrid genes in plants.
*
This work was supported by a National Science and
Engineering Research Council of Canada grant (to T. E. B.).The costs of publication of this
article were defrayed in part by the
payment of page charges. The article
must therefore be hereby marked
"advertisement" in
accordance with 18 U.S.C. Section
1734 solely to indicate this fact.
The on-line version of this article (available at
http://www.jbc.org) contains Fig. 1.
To whom reprint requests should be addressed. Tel: 514-398-6472;
Fax: 514-398-5069; E-mail: thomas_bureau@maclan.mcgill.ca.
Copyright © 2001 by The American Society for Biochemistry and Molecular Biology, Inc.
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