重组人PIWIL1蛋白
Recombinant Human PIWIL1 protein
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Recombinant Human PIWIL1 protein is a Human Fragment protein, in the 431 to 541 aa range, expressed in Wheat germ, suitable for ELISA, WB.
查看别名
HIWI, PIWIL1, Piwi-like protein 1
- SDS-PAGE
Unknown
SDS-PAGE - Recombinant Human PIWIL1 protein (AB152968)
ab152968 on a 12.5% SDS-PAGE stained with Coomassie Blue.
反应性数据
序列信息
性能和储存信息
运输条件
推荐的短期储存条件
推荐的长期储存条件
分装信息
储存信息
补充信息
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
PIWIL1 contributes to maintaining genomic integrity through its role in RNA-mediated gene regulation. It forms part of the piRNA-induced silencing complex. This complex targets transposable elements and prevents their mobility an important function for genomic stability. PIWIL1's involvement in gametogenesis highlights its essential function in reproductive biology and cellular processes where piRNA pathways operate.
Pathways
The PIWIL1 protein plays significant roles within the piRNA pathway which is important for transposon silencing and germline integrity. PIWIL1 interacts with MILI and MIWI two proteins that also participate in the silencing of transposable elements. This pathway intersects with other gene regulation pathways influencing the overall expression landscape necessary for proper cellular function in reproductive tissues.
特殊说明
形式
Liquid
常规信息
功能
Endoribonuclease that plays a central role in postnatal germ cells by repressing transposable elements and preventing 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 governs the methylation and subsequent repression of transposons. Directly binds methylated 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. Strongly prefers a uridine in the first position of their guide (g1U preference, also named 1U-bias). Not involved in the piRNA amplification loop, also named ping-pong amplification cycle. Acts as an endoribonuclease that cleaves transposon messenger RNAs. Besides their function in transposable elements repression, piRNAs are probably involved in other processes during meiosis such as translation regulation. Probable component of some RISC complex, which mediates RNA cleavage and translational silencing. Also plays a role in the formation of chromatoid bodies and is required for some miRNAs stability. Required to sequester RNF8 in the cytoplasm until late spermatogenesis; RNF8 being released upon ubiquitination and degradation of PIWIL1.. Isoform 3. May be a negative developmental regulator (PubMed : 12037681, PubMed : 16287078).
序列相似性
Belongs to the argonaute family. Piwi subfamily.
翻译后修饰
Arginine methylation by PRMT5 is required for the interaction with Tudor domain-containing protein (TDRD1, TDRKH/TDRD2, RNF17/TDRD4, TDRD6, TDRD7 and TDRD9) and subsequent localization to the meiotic nuage, also named P granule.. Ubiquitinated by the anaphase promoting complex/cyclosome (APC/C) in late spermatids, leading to its degradation (PubMed:28552346). Ubiquitination only takes place following piRNA-binding in adult testis (By similarity). Ubiquitination and degradation in late spermatogenesis by APC/C is probably required to release RNF8 from the cytoplasm and promote histone to protamine exchange by RNF8 (By similarity).
靶点信息
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