Nuclear localization of the Epstein-Barr virus EBNA3B protein

Burgess, Anita, Buck, Marion, Krauer, Kenia and Sculley, Tom (2006) Nuclear localization of the Epstein-Barr virus EBNA3B protein. Journal of General Virology, 87 4: 789-793. doi:10.1099/vir.0.81640-0

Author Burgess, Anita
Buck, Marion
Krauer, Kenia
Sculley, Tom
Title Nuclear localization of the Epstein-Barr virus EBNA3B protein
Journal name Journal of General Virology   Check publisher's open access policy
ISSN 0022-1317
Publication date 2006-04-01
Sub-type Article (original research)
DOI 10.1099/vir.0.81640-0
Open Access Status Not Open Access
Volume 87
Issue 4
Start page 789
End page 793
Total pages 5
Place of publication Reading, Berks., United Kingdom
Publisher Society for General Microbiology
Language eng
Abstract The Epstein–Barr virus nuclear antigen (EBNA) 3B is a hydrophilic, proline-rich, charged protein that is thought to be involved in transcriptional regulation and is targeted exclusively to the cell nucleus, where it localizes to discrete subnuclear granules. Co-localization studies utilizing a fusion protein between enhanced green fluorescent protein (EGFP) and EBNA3B with FLAG-tagged EBNA3A and EBNA3C proteins demonstrated that EBNA3B co-localized with both EBNA3A and EBNA3C in the nuclei of cells when overexpressed. Computer analyses identified four potential nuclear-localization signals (NLSs) in the EBNA3B amino acid sequence. By utilizing fusion proteins with EGFP, deletion constructs of EBNA3B and site-directed mutagenesis, three of the four NLSs (aa 160–166, 430–434 and 867–873) were shown to be functional in truncated forms of EBNA3B, whilst an additional NLS (aa 243–246) was identified within the N-terminal region of EBNA3B. Only two of the NLSs were found to be functional in the context of the full-length EBNA3B protein.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Published under Short Communication

Document type: Journal Article
Sub-type: Article (original research)
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Created: Wed, 19 Oct 2011, 21:49:04 EST by Marion Buck on behalf of Royal Brisbane Clinical School