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Tandem cDNAs encoding chemokines CC-1, CC-2, and CC-3

机译:编码趋化因子CC-1,CC-2和CC-3的串联cDNA

摘要

The CC type chemokines belong to a family of polypeptides which have proven to be mediators of immune reactions, and they have recently attracted attention due to their antiviral activity with respect to HIV. The cloning and molecular characterization of a human tandem gene is disclosed which contains the closely linked coding regions for two new CC type chemokines the sequences of which are highly homologous with that of MIP-1&agr;. The transcription of the tandem gene leads to a bicistronic mature transcript which contains the non-overlapping open reading frames for the recently described factor HCC-1 and an as yet unknown CC type chemokine, designated as CC-2. Moreover, alternative splicing of the primary transcript yields at least one additional CC type chemokine, cytokine CC-3. Two functional promoter regions were identified within the tandem gene. The disclosed data provide some basic knowledge about the structure and expression of the new human CC-2/HCC-1 tandem gene and describe a mechanism according to which the coexpression of closely linked genes could be regulated in higher eucaryotes.
机译:CC型趋化因子属于多肽家族,已被证明是免疫反应的介质,并且由于它们对HIV的抗病毒活性,它们最近引起了人们的关注。公开了人串联基因的克隆和分子表征,其包含两个新的CC型趋化因子的紧密连接的编码区,所述两个CC型趋化因子的序列与MIP-1α的序列高度同源。串联基因的转录导致双顺反子成熟转录本,其包含最近描述的因子HCC-1的非重叠开放阅读框和一个仍未知的CC型趋化因子,称为CC-2。此外,初级转录物的可变剪接产生至少一种另外的CC型趋化因子细胞因子CC-3。在串联基因中鉴定出两个功能性启动子区域。公开的数据提供了有关新的人CC-2 / HCC-1串联基因的结构和表达的一些基础知识,并描述了一种机制,根据该机制,可以在高级真核生物中调节紧密连接的基因的共表达。

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