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. 1994 Apr:75 ( Pt 4):733-41.
doi: 10.1099/0022-1317-75-4-733.

Characterization of the herpes simplex virus type 1 strain 17+ neurovirulence gene RL1 and its expression in a bacterial system

E A McKie  1 , R G Hope, S M Brown, A R MacLean
Affiliations

Characterization of the herpes simplex virus type 1 strain 17+ neurovirulence gene RL1 and its expression in a bacterial system

E A McKie et al. J Gen Virol. 1994 Apr.

Abstract

The DNA sequence of herpes simplex virus type 1 (HSV-1) strain 17+ in the region coding for the polypeptide ICP34.5 predicts a protein of 248 amino acids with a proposed M(r) of 26,158. The entire RL1 open reading frame was cloned into the expression vector pET8c to enable over-expression of ICP34.5 in Escherichia coli. The expressed protein was partially purified and used as an immunogen to produce a polyclonal antiserum in rabbits. Construction of an ICP34.5 null mutant (1771), demonstrated that the predicted open reading frame for ICP34.5 in strain 17+ is correct and confirmed that HSV-1 strain 17+ ICP34.5 specifically determines neurovirulence. The specificity of the anti-serum directed against the E. coli-expressed ICP34.5 was defined by Western blotting of wild-type and RL1-negative infected cell extracts.

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