NDLI: Characterization of γ2-human herpesvirus-8 glycoproteins gH and gL

Content Provider	Springer Nature Link
Author	Naranatt, P. P. Akula, S. M. Chandran, B.
Copyright Year	2002
Abstract	The γ2 human herpesvirus-8 (HHV-8) or Kaposi’s sarcoma associated herpesvirus (KSHV) ORFs 22 and 47 are counterparts to glycoproteins gH and gL, respectively, that are conserved among the members of herpesviruses. To define HHV-8 gH and gL, rabbit polyclonal antibodies were raised against GST-gH and GST-gL fusion proteins. Anti-gL and anti-gH antibodies reacted with the surface of virus carrying BCBL-1 cells. Both antibodies immunoprecipitated the HHV-8 envelope associated 120 kDa and 41–42 kDa proteins. In transfected COS-1 cells, gH was expressed as an endo-H sensitive 110 kDa glycoprotein, which was absent on the surface of the cells. However, after co-transfection with gL, gH was detected as an endo-H resistant 120 kDa glycoprotein, and was expressed on the surface of the cells. Non-covalent complex formation between gH and gL was detected in the transfected COS-1 cells. Anti-gH and anti-gL antibodies neutralized HHV-8 infectivity in the absence of complement, individually and more efficiently together. However, virus binding to the target cells was not inhibited. These studies suggest that HHV-8 gL is required for gH processing and expression on the cell surface membranes, and gH/gL complex plays an important role in the post-binding step of HHV-8 infection.
Starting Page	1349
Ending Page	1370
Page Count	22
File Format	PDF
ISSN	03048608
Journal	Archives of Virology
Volume Number	147
Issue Number	7
e-ISSN	14328798
Language	English
Publisher	Springer-Verlag
Publisher Date	2014-04-12
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Virology Medical Microbiology Infectious Diseases
Content Type	Text
Resource Type	Article
Subject	Virology Medicine

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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