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. 1982 Dec 1;207(3):397–408. doi: 10.1042/bj2070397

Structure and properties of human interferon-alpha from Namalwa lymphoblastoid cells.

G Allen
PMCID: PMC1153878  PMID: 7165700

Abstract

The chromatographic properties of human interferon-alpha from Namalwa lymphoblastoid cells on Sephadex G-75 are described. The interferons are separated into two groups of four, with apparent molecular weights 19050 and 22000. Some of the latter form dimers at high concentrations. Fractions containing interferon were studied by polyacrylamide-gel electrophoresis in the presence of sodium dodecyl sulphate. Seven of the components had apparent molecular weights in this system, after reduction, of between 18400 and 20900: one component is probably glycosylated and has an apparent molecular weight of 27500. Amino acid sequences of peptides derived from interferon mixtures were determined and are related to published sequences deduced from the nucleotide sequences of cloned complementary DNA coding for interferon-alpha. The results show that the major interferon-alpha species isolated from Namalwa cells do not undergo C-terminal processing. Amino acid analyses of peptides are presented in Supplementary Publication SUP 50117 (28 pages), which has been deposited with the British Library Lending Division, Boston Spa, Wetherby, West Yorkshire LS23 7BQ, U.K., from whom copies can be obtained on the terms indicated in Biochem. J. (1981) 193, 5.

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Selected References

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