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. 1982;1(8):953-8.
doi: 10.1002/j.1460-2075.1982.tb01277.x.

Cloning and structure of the human immune interferon-gamma chromosomal gene

Cloning and structure of the human immune interferon-gamma chromosomal gene

Y Taya et al. EMBO J. 1982.

Abstract

Two clones containing the human immune interferon-gamma (IFN-gamma) chromosomal gene were isolated from a human DNA library present in lambda Charon4A phage. DNA from these clones specified biologically active interferon upon injection into the nuclei of Xenopus laevis oocytes. Analysis of the clones revealed that they were derived from the same chromosomal segment. Restriction fragments that hybridized with 32P-labeled cDNA probes were subcloned into plasmids and the complete sequence of the IFN-gamma gene was determined. Unlike IFNs-alpha and -beta, IFN-gamma does contain introns. Their presence was also revealed by electron microscopy. It is intriguing that the smallest of the three introns is located just in the middle of the Glu-Glu sequence which is conserved among all three forms of interferon at approximately the same position. The promoter region was found to contain a prototype TATA box, many palindromic structures and several repeating sequences and two symmetrical structures. Particularly interesting was the existence of two sequences homologous to those present in the chicken albumin and the human IFN-beta gene promoter region. A sequence GTGTTG common to several other genes was found in the region approximately 10 nucleotides downstream from the polyadenylation site.

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References

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