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    • 1. 发明授权
    • POP2: NKκB-inhibiting polypeptides, nucleic acids and methods of use
    • POP2:NK抑制多肽,核酸和使用方法
    • US09163071B2
    • 2015-10-20
    • US11279043
    • 2006-04-07
    • Jonathan A. HartonFelipe BedoyaLaurel L. Sandler
    • Jonathan A. HartonFelipe BedoyaLaurel L. Sandler
    • C12N15/63C12N15/12A61K31/711C07K14/47G01N33/68A61K38/00
    • C07K14/47A61K38/00C07K14/4703C07K16/18C12N15/113C12Q1/6888C12Q1/6897G01N33/5041G01N33/6872G01N2500/00
    • This invention provides a novel pyrin-only protein (POP2), polypeptides, and nucleic acids encoding them and methods for making and using them. POP2 is a 294 nt single exon gene located on human chromosome 3 encoding a 97 amino acid protein with sequence and predicted structural similarity to other pyrin domains. Highly similar to pyrin domains in CATERPILLER (CLR, NLR, NALP) family proteins, POP2 is less like the prototypic Pyrin and ASC pyrin domains. POP2 is expressed principally in peripheral blood leukocytes and displays both cytoplasmic and nuclear expression patterns in transfected cells. TNFα-stimulated and p65 (RelA) induced NF-κB-dependent gene transcription is inhibited by POP2 in vitro by a mechanism involving changes in NF-κB nuclear import or distribution. While colocalizing with ASC in perinuclear specks, POP2 also inhibits the formation of specks by the CLR protein CIAS1/NALP3. POP2 is a negative regulator of NF-κB activity that may influence the assembly of pyrin-domain dependent complexes.
    • 本发明提供了一种新的仅含有蛋白的蛋白(POP2),多肽和编码它们的核酸及其制备和使用方法。 POP2是位于人染色体3上的294nt单个外显子基因,编码97个氨基酸的蛋白质,其序列与其他pyrin结构域的结构相似。 与CATERPILLER(CLR,NLR,NALP)家族蛋白中的pyrin结构域非常相似,POP2较不像原型的Pyrin和ASC pyrin结构域。 POP2主要表达于外周血白细胞,并在转染细胞中显示细胞质和核表达模式。 TNFα刺激和p65(RelA)诱导的NF-κB依赖性基因转录受到POP2体外受到NF-和κB核进入或分布变化的机制的抑制。 当与ASC在核周斑中共定位时,POP2还抑制CLR蛋白CIAS1 / NALP3形成斑点。 POP2是NF-κB活性的负调节因子,其可能影响pyrin结构域依赖性复合物的组装。