Rabbit anti-Human PIWIL4 Polyclonal Antibody

Uniprot Id

Q7Z3Z4

Target Species

Human

Target Name

PIWIL4

Target Full Name

Piwi-like protein 4

Target Function

Plays a central role during spermatogenesis 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 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. Does not show endonuclease activity. Plays a key role in the piRNA amplification loop, also named ping-pong amplification cycle, by acting as a 'slicer-incompetent' component that loads cleaved piRNAs from the 'slicer-competent' component PIWIL2 and target them on genomic transposon loci in the nucleus. May be involved in the chromatin-modifying pathway by inducing 'Lys-9' methylation of histone H3 at some loci. In addition to its role in germline, PIWIL4 also plays a role in the regulation of somatic cells activities. Plays a role in pancreatic beta cell function and insulin secretion. Involved in maintaining cell morphology and functional integrity of retinal epithelial through Akt/GSK3alpha/beta signaling pathway. When overexpressed, acts as an oncogene by inhibition of apoptosis and promotion of cells proliferation in tumors.

Target Subcellular Location

Nucleus. Cytoplasm.

Target Protein Families

Argonaute family, Piwi subfamily

Target Tissue Specificity

Ubiquitously expressed. Detected in retina, retinal pigment epithelia cells (RPE) (at protein level).

Target Synonyms

DKFZp686P01248; FLJ36156; 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 RNA mediated gene silencing 4; Piwi-like protein 4; PIWIL 4; Piwil4; PIWL4_HUMAN

Target Background

PIWIL4 belongs to the Argonaute family of proteins, which function in development and maintenance of germline stem cells (Sasaki et al., 2003 [PubMed 12906857]).