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Science 27 June 1986:
Vol. 232. no. 4758, pp. 1641 - 1643
DOI: 10.1126/science.3754979
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Articles

Science, Vol 232, Issue 4758, 1641-1643
Copyright © 1986 by American Association for the Advancement of Science

articles

Expression and cell type--specific processing of human preproenkephalin with a vaccinia recombinant

G Thomas, E Herbert, and DE Hruby

The posttranslational maturation of a complex precursor polyprotein, human proenkephalin, was assessed by infection of a wide spectrum of cell types with a recombinant vaccinia virus that expressed human proenkephalin. The infected cells rapidly produced both cellular and secreted Met-enkephalin immunoreactivity. Although each cell line could secrete intact proenkephalin, only a mouse pituitary line was capable of processing proenkephalin to mature enkephalin peptides. The quantity of intact proenkephalin secreted from BSC-40 cells (derived from African Green monkey kidney) was sufficient to establish the value of vaccinia virus as a mammalian cell expression vector.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)