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Identification of a Novel Subgroup of Koala Retrovirus from Koalas in Japanese Zoos

Takayuki Shojima,a Rokusuke Yoshikawa,a Shigeki Hoshino,a Sayumi Shimode,a So Nakagawa,b Takuji Ohata,a Rie Nakaoka,a Takayuki Miyazawaa

Laboratory of Signal Transduction, Department of Cell Biology, Institute for Virus Research, Kyoto University, Sakyo-ku, Kyoto, Japana; Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa, Japan
b

ABSTRACT
We identified a new subgroup of koala retrovirus (KoRV), named KoRV-J, which utilizes thiamine transport protein 1 as a receptor instead of the Pit-1 receptor used by KoRV (KoRV-A). By subgroup-specific PCR, KoRV-J and KoRV-A were detected in 67.5 and 100% of koalas originating from koalas from northern Australia, respectively. Altogether, our results indicate that the invasion of the koala population by KoRV-J may have occurred more recently than invasion by KoRV-A.

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  • 2013
  • Biogeography
  • Biology
  • Chlamydia
  • Diet
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  • Ecology
  • Ellis
  • Eucalyptus
  • Genetics
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  • Infection
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  • Koala
  • Lunney
  • Threats
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