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. 1983 Sep;80(18):5665-9.
doi: 10.1073/pnas.80.18.5665.

One of two Epstein-Barr virus nuclear antigens contains a glycine-alanine copolymer domain

K Hennessy, E Kieff

One of two Epstein-Barr virus nuclear antigens contains a glycine-alanine copolymer domain

K Hennessy et al. Proc Natl Acad Sci U S A. 1983 Sep.

Abstract

A gene fusion between an Epstein-Barr virus (EBV) triplet nucleotide repeat array (IR3), which has homology to host DNA, and lacZ was used to demonstrate that this EBV sequence encodes part of the Epstein-Barr nuclear antigen (EBNA). The IR3 sequence is translated into a glycine-alanine copolymer that reacts with anti-EBNA human sera. Some EBV-immune human antisera recognize a second intranuclear protein that is also specific for latently infected cells and is designated EBNA2. EBNA2 is not related to EBNA1 because the molecular mass of EBNA2 is 82 kilodaltons, whereas that of EBNA1 varies from 68 to 85 kilodaltons among cells transformed by different EBV isolates; also EBNA2 does not contain the copolymer domain of EBNA1.

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