, Volume 17, Issue 5, pp 519-523

Tumor necrosis factor receptor genes,TNFR1 andTNFR2 , on human chromosomes 12 and 1

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Tumor necrosis factor, TNF, is a 17-kDa protein secreted by macrophages and classified as a cytokine. TNF binds to high-affinity receptors on the cell surface and is involved in a wide variety of biological responses. There are at least two types of receptors, tumor necrosis factor receptors 1 and 2 (TNFR1 and TNFR2). The genes for TNFR1, a 55-kDa protein, and TNFR2, a 70-kDa protein, have been mapped to human chromosomes 1 12 (12pter-cen) and (1pter-p32), respectively, by Southern blot analysis of human × Chinese hamster somatic cell hybrid panels. Recently, the corresponding genes in the mouse have been mapped to chromosomes 4 and 6 in regions that are conserved on human chromosomes 1 and 12.