PIWIL4抗体特异性结合抗原：抗体本身不能直接溶解或杀伤带有特异抗原的靶细胞，通常需要补体或吞噬细胞等共同发挥效应以**病原微生物或导致病理损伤。然而，抗体可通过与病毒或**的特异性结合，直接发挥中和病毒的作用。
产品编号xy- 20406R
英文名称PIWIL4
中文名称piwi样4蛋白抗体
别 名HILI 2; HILI2; HIWI 2; HIWI2; Miwi 2 protein; Miwi2; PIWI; Piwi like 2; Piwi like 4 (Drosophila); Piwi like 4; Piwi like protein 4; PIWI like protein; Piwi-like protein 4; PIWIL 4; Piwil4; PIWL4_HUMAN.
说 明 书100ul 200ul
研究领域细胞生物 发育生物学 染色质和核信号 转录调节因子 表观遗传学
抗体来源Rabbit
克隆类型Polyclonal
PIWIL4抗体交叉反应 Human, Mouse, Rat, Dog, Pig, Cow, Horse, Rabbit, Sheep,
产品应用ELISA=1:500-1000 IHC-P=1:400-800 IHC-F=1:400-800 ICC=1:100-500 IF=1:100-500 （石蜡切片需做抗原修复）
not yet tested in other applications.
optimal dilutions/concentrations should be determined by the end user.
分 子 量94kDa
细胞定位细胞核 细胞浆
性 状Lyophilized or Liquid
浓 度1mg/1ml
免 疫 原KLH conjugated synthetic peptide derived from human PIWIL4:401-500/852
亚 型IgG
纯化方法affinity purified by Protein A
储 存 液Preservative: 15mM Sodium Azide, Constituents: 1% BSA, 0.01M PBS, pH 7.4
PIWIL4抗体保存条件Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C.
PubMedPubMed
产品介绍background:
PIWIL4 belongs to the Argonaute family of proteins, which function in development and maintenance of germline stem cells. Plays a central role during spermatogenesis by repressing transposable elements and prevent their mobilization, which is essential for the germline integrity. Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and govern the methylation and subsequent repression of transposons. Directly binds piRNAs, a class of 24 to 30 nucleotide RNAs that are generated by a Dicer-independent mechanism and are primarily derived from transposons and other repeated sequence elements. Associates with secondary piRNAs antisense and PIWIL2/MILI is required for such association. The piRNA process acts upstream of known mediators of DNA methylation. Participates to a piRNA amplification loop. Besides their function in transposable elements repression, piRNAs are probably involved in other processes during meiosis such as translation regulation. May be involved in the chromatin-modifying pathway by inducing 'Lys-9' methylation of histone H3 at some loci.
Function:
Plays a central role during spermatogenesis by repressing transposable elements and prevent their mobilization, which is essential for the germline integrity. Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and govern the methylation and subsequent repression of transposons. Directly binds piRNAs, a class of 24 to 30 nucleotide RNAs that are generated by a Dicer-independent mechanism and are primarily derived from transposons and other repeated sequence elements. Associates with secondary piRNAs antisense and PIWIL2/MILI is required for such association. The piRNA process acts upstream of known mediators of DNA methylation. Participates in a piRNA amplification loop. Besides their function in transposable elements repression, piRNAs are probably involved in other processes during meiosis such as translation regulation. May be involved in the chromatin-modifying pathway by inducing 'Lys-9' methylation of histone H3 at some loci.
Subunit:
Interacts with PRMT5 and WDR77. Interacts (when methylated on arginine residues) with TDRD1, TDRKH/TDRD2 and TDRD9.
Subcellular Location:
Nucleus. Cytoplasm. Note=Probable component of the meiotic nuage, also named P granule, a germ-cell-specific organelle required to repress transposon during meiosis. PIWIL2/MILI is required for nuclear localization.
Tissue Specificity:
Expressed in testis. According to PubMed:17544373, it is ubiquitously expressed.
Post-translational modifications:
Arginine methylation by PRMT5 is required for the interaction with Tudor domain-containing protein (TDRD1, TDRKH/TDRD2 and TDRD9) and subsequent localization to the meiotic nuage, also named P granule.
Similarity:
Belongs to the argonaute family. Piwi subfamily.
Contains 1 PAZ domain.
Contains 1 Piwi domain.
SWISS:
Q7Z3Z4
Gene ID:
143689
PIWIL4抗体（antibody,
Ab）是由效应B细胞（效应**B细胞）分泌，机体用于抵御外来物质，如病毒，**等抗原，结构呈“Y”字型的球状蛋白质，仅仅存在于脊椎动物的血液和B**细胞膜表面。凡是能够跟抗体结合的物质，均被称作抗原，因此对于抗抗体（能够结合抗体的抗体）来说，抗体本身也是一种抗原物质。
PIWIL4抗体普通抗体重链和轻链的结构
重链结构：普通的**球蛋白具有2条重链（H链），分子量约为50kD,有μ、δ、γ、ε和α五种重链亚型，对应的**球蛋白名称分别为IgM、IgG、IgA、IgD和IgE。
轻链结构： 普通**球蛋白具有2条轻链（L链），分子质量约25kDa，有κ链和λ链两种亚型，这两种轻链决定了Ig的亚型类别（IgG1，IgG2，IgG3，IgG4）。一个天然的Ig分子两条轻链总是相同的，但在同一个体内可存在分别带有κ或λ链的抗体分子。不同种属生物体内两型轻链的比例不同，正常人血清**球蛋白κ链：λ链约为2：1，而在小鼠的比例为20：1。
2.2抗体Fab段和Fc段
IgG经木瓜蛋白酶酶切后裂解为2个完全相同的Fab段和1个Fc段,每个Fab段都为单价,可与抗原结合但不会再发生凝集反应；经胃蛋白酶酶切后裂解为1个完整F(ab)2片段和碎片化的Fc片段,F(ab’)2片段为双价,可同时结合两个抗原表位。Fab段为抗原结合片段（fragment of antigen binding，Fab），相当于抗体分子的两个臂，由一个完整的轻链和重链的VH和CH1结构域组成。Fc段为可结晶段（fragment crystallizable，Fc）相当于Ig的CH2和CH3结构域，是Ig与效应分子或者细胞相互作用的部位。Fab段包含完整的可变区，以及恒定区的CH1区域。Fc段仅指Ig恒定区CH2和CH3的区域，相当于Y字结构下面那一部分。
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合格 HIF-1 Alpha 缺氧诱导因子1α 抗体HIF-1α
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合格 CDKN1A/p21 p21蛋白抗体
合格 合格 CDKN1B/p27 KIP 1 P27抗体/周期素依赖激酶抑制剂
合格 合格 RANKL/CD254 骨保护蛋白配体/破骨细胞分化因子抗体
合格 合格 合格 PTEN 一种肿瘤抑制基因抗体（N端）
合格 合格 PCNA 增殖细胞核抗原抗体
合格 GAPDH 3-磷酸甘油醛脱氢酶（兔来源**组化用抗体）
合格 合格 合格 Vimentin 波形蛋白抗体
合格 Lpin1 protein Lpin1 抗体
合格 CD3E CD3/CD3-ε 抗体
合格 合格 合格 CD4 CD4抗体
合格 IL12 白介素12抗体
合格 PARP 多腺苷二磷酸多聚酶抗体/多聚ADP-核糖聚合酶1
合格 合格 CaMK2 alpha 钙/钙调素依赖蛋白激酶2α抗体
合格 phospho-FSCN1(Ser39) 磷酸化纤维束蛋白同源物1抗体
合格 CD90 CD90抗体
合格 IL-6 白介素6抗体
合格 SDF1 beta 基质细胞衍生因子－1抗体
合格 IFN-Beta/Ifnb1 干扰素β抗体
合格 合格 Claudin 1 紧密连接蛋白1抗体(C端)
合格 Maspin 抑癌基因抗体
合格 Fascin1 纤维束1抗体