Sims J E, Acres R B, Grubin C E, McMahan C J, Wignall J M, March C J, Dower S K
Immunex Corp., Seattle, WA 98101.
Proc Natl Acad Sci U S A. 1989 Nov;86(22):8946-50. doi: 10.1073/pnas.86.22.8946.
cDNA clones of the interleukin 1 (IL-1) receptor expressed in a human T-cell clone have been isolated by using a murine IL-1 receptor cDNA as a probe. The human and mouse receptors show a high degree of sequence conservation. Both are integral membrane proteins possessing a single membrane-spanning segment. Similar to the mouse receptor, the human IL-1 receptor contains a large cytoplasmic region and an extracellular, IL-1 binding portion composed of three immunoglobulin-like domains. When transfected into COS cells, the human IL-1 receptor cDNA clone leads to expression of two different affinity classes of receptors, with Ka values indistinguishable from those determined for IL-1 receptors in the original T-cell clone. An IL-1 receptor expressed in human dermal fibroblasts has also been cloned and sequenced and found to be identical to the IL-1 receptor expressed in T cells.
利用鼠白细胞介素1(IL-1)受体cDNA作为探针,已从一个人T细胞克隆中分离出了表达的IL-1受体的cDNA克隆。人和小鼠的受体显示出高度的序列保守性。两者都是具有单个跨膜区段的整合膜蛋白。与小鼠受体相似,人IL-1受体包含一个大的胞质区域和一个由三个免疫球蛋白样结构域组成的细胞外IL-1结合部分。当转染到COS细胞中时,人IL-1受体cDNA克隆导致两种不同亲和力类别的受体表达,其解离常数(Ka)值与在原始T细胞克隆中测定的IL-1受体的值无法区分。在人皮肤成纤维细胞中表达的IL-1受体也已被克隆和测序,发现与在T细胞中表达的IL-1受体相同。