Alternative membrane forms of Fc gamma RIII(CD16) on human natural killer cells and neutrophils. Cell type-specific expression of two genes that differ in single nucleotide substitutions.

Alternative membrane forms of Fc gamma RIII(CD16) on human natural killer cells and neutrophils. Cell type-specific expression of two genes that differ in single nucleotide substitutions.
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DOI:
10.1084/jem.170.2.481
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发表时间:
1989-08-01
影响因子:
15.3
通讯作者:
PERUSSIA, B
PERUSSIA, B
中科院分区:
医学1区
文献类型:
--
作者:
RAVETCH, JV;PERUSSIA, B

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IgG 免疫复合物的低亲和力受体 Fc gamma RIII(CD16) 在人类 NK 细胞上表达为通过跨膜肽锚定的整合膜糖蛋白;在多形核中性粒细胞 (PMN) 上,受体通过磷脂酰肌醇 (PI) 连接锚定。 NK 细胞上的蛋白质的分子量比 PMN 上的蛋白质大 6-10 kD,并且与后者不同的是,它对 PI 特异性磷脂酶 C (PI-PLC) 具有抗性。从单个供体的 PMN 和 NK 细胞中分离的 Fc gamma RIII(CD16) 转录物显示出多个单核苷酸差异,其中之一将框内 UGA 终止密码子转换为 CGA 密码子。由此产生的开放阅读框编码 NK 细胞中 Fc gamma RIII(CD16) 的较长胞质结构域,有助于其跨膜锚定。已为 Fc gamma RIII(CD16) 克隆了编码这些转录物的两个几乎相同的连锁基因,其中之一 (III-1) 是 NA-1 和 NA-2 的等位基因。等位基因位点已被定位到胞外域中的两个单核苷酸。这些基因以细胞类型特异性的方式转录,以产生该受体的替代锚定形式。
A low affinity receptor for IgG immune complexes, Fc gamma RIII(CD16), is expressed on human NK cells as an integral membrane glycoprotein anchored through a transmembrane peptide; on polymorphonuclear neutrophils (PMN) the receptor is anchored through a phosphatidylinositol (PI) linkage. The protein on NK cells has a molecular mass 6-10 kD larger than that on PMN, and, unlike the latter, is resistant to PI-specific phospholipase C (PI-PLC). Fc gamma RIII(CD16) transcripts isolated from PMN and NK cells of single donors revealed multiple single nucleotide differences, one of which converts an in frame UGA termination codon to a CGA codon. The resulting open reading frame encodes a longer cytoplasmic domain for Fc gamma RIII(CD16) in NK cells, contributing to its transmembrane anchor. Two nearly identical, linked genes that encode these transcripts have been cloned for Fc gamma RIII(CD16), one of which (III-1) is allelic for NA- 1 and NA-2. The allelic sites have been mapped to two single nucleotides in the extracellular domain. These genes are transcribed in a cell type-specific fashion to generate the alternatively anchored forms of this receptor.
DOI: 10.1084/jem.166.6.1668
发表时间: 1987-12-01
期刊: The Journal of experimental medicine
影响因子: --
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发表时间: 1988-06-09
期刊: NATURE
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通讯作者: SEED, B
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发表时间: 1982-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
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