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piwil2

Gene
piwil2
Protein
Piwi-like protein 2
Organism
Oncorhynchus mykiss
Length
1054 amino acids
Function
Endoribonuclease that plays a central role during spermatogenesis by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity. Plays an essential role in meiotic differentiation of spermatocytes, germ cell differentiation and in self-renewal of spermatogonial stem cells. 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. During piRNA biosynthesis, plays a key role in the piRNA amplification loop, also named ping-pong amplification cycle, by acting as a 'slicer-competent' piRNA endoribonuclease that cleaves primary piRNAs, which are then loaded onto 'slicer-incompetent' piwil4. Piwil2 slicing produces a pre-miRNA intermediate, which is then processed in mature piRNAs, and as well as a 16 nucleotide by-product that is degraded. Required for piwil4/miwi2 nuclear localization and association with secondary piRNAs antisense.
Similarity
Belongs to the argonaute family. Piwi subfamily.
Mass
117.141 kDa
Sequence
MDPKKPCFPGLPGATRIPWLQQQAWGRGLRSDEPAIGRARGLMFATDGSASLGRARGFTTAGDTLLMQYGRGVPFPVSDPSIGFARGIPMPTSEDGGINRPRGWLLSTADPTVGVARGEPLLGLGPHLGQATPGQLAKQDLPEEMPSLQAEEEVVAKQVDMSTQGQGSSLVSMFRGMGIDPSKTWGRGGLPVGRGVFGAELQPQTAPVGAVAVAGPGGDRFPEDMMGQGNSFLGRGVPSQMVGMGRASMHPLGAGRGPTVPPTLPPSLHKEAHMTPGCSLTKGELKMEATCETLHKTGTKGTPLPIGSNHITIHCRNEAVYQYHVTFTPNVESMGMRFGMMKDHRPTTGEVVAFDGSILYLPVKMEEVVHLKSVRRTDNQEVDIKVQMTKILPPNSDLCIPFYNVVLRRVMKILGLKLVGRNHYDPKSAVILGKHRLQVWPGYSTCIKHTDGGLYLQVDVSHKVLRNDSVLDCMNVIYQQSRESFQDECTKELIGSIVITRYNNRTYRIDDIEWGKSPKDTFTMADGSTTTFVEYYSKNYGITIKEMDQPMLIHRPKERSKPGGKQVITGEILLLPELSFTTGIPDKMRKDFRAMKDLTMHINVSSEQHTHSLKQLLKNINTNPEAQTELARWGLEISQDILVTIGRILPLETICLQSVSFVTGADVSWSREVIRDASISCIPMNCWAIFYPRRCAEQAEELVSCFGKVAGPMGLRLDRPIRVELKDDRTETYVKSIHSQLTSEPNVQLVVCIMTGNRDDLYSAIKKLCCVQSPVPSQAINVRTISQPQKLRSVAQKILLQMNCKLGGELWTVNVPLKHLMVIGVDVHHDTSKKNRSVMGFVASLNSLLTRWYSRVTFQMPNEEIINGFRVCLLAALQKYYGVNHNFPEKIVVYRDGVSDGQLKTVELYEIPQLLKCFETFPNYEPKLAFIVVQKRVSTNLYSCSGDRFGTPPPGTVLDHTVTNREWVDFYLMAHHVRQGCGLPTRNISVYNTANLSPDHLQRLTFKMCHMYWNWPGTIRVPAPCKYAHKLAFLSGQYLHSEPAIQLADKLYFL

Gene
piwil2
Protein
Piwi-like protein 2
Organism
Danio rerio
Length
1046 amino acids
Function
Endoribonuclease that plays a central role during spermatogenesis by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity (PubMed:18833190). Plays an essential role in germ cell differentiation and meiosis, independently of the function in transposable elements repression (PubMed:18833190). 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 (PubMed:18833190). During piRNA biosynthesis, plays a key role in the piRNA amplification loop, also named ping-pong amplification cycle, by acting as a 'slicer-competent' piRNA endoribonuclease that cleaves primary piRNAs, which are then loaded onto 'slicer-incompetent' piwil4 (By similarity). Piwil2 slicing produces a pre-miRNA intermediate, which is then processed in mature piRNAs, and as well as a 16 nucleotide by-product that is degraded (By similarity). Required for piwil4/miwi2 nuclear localization and association with secondary piRNAs antisense (By similarity). Represses circadian rhythms by promoting the stability and activity of core clock components ARNTL/BMAL1 and CLOCK (By similarity).
Similarity
Belongs to the argonaute family. Piwi subfamily.
Mass
116.207 kDa
Sequence
MDPKRPTFPSPPGVIRAPWQQSTEDQSQLLDQPSLGRARGLIMPIDEPLPGRGRAFSVPGEMPVRFGRGITQSIAAEPLVGMARGVRLPMEEGGFGRGRGFLLPTPEPTVGIGRGAAIGPVPTLDIQKAEVEEKMPELQAEVAPTVAKVGSPGTGSSLVSMFRGLGIEPGKTWGRGAAPVGRGAAGDMGADLQPKPTIIGASLTPEREEVRSEESISFLGRGFTGFGRAAMPHMTVGRGPIGPLSPSPSVAAPFSLISASSASEDAPVAPGTPPKVEVKIETVKEPLQKIGTKGSPIPIGSNYIPICCKNDAVFQYHVTFTPNVESLSMRFGMMKEHRPTTGEVVAFDGSILYLPKRLEEVVHLKAERKTDNQEIDIKIQLTKILPPSSDLCIPFYNVVLRRVMKILGLKLVGRNHYDPNAVVILGKHRLQVWPGYSTSIKHTDGGLYLVVDVSHKVLRNDSVLDVMNLIYQGSRESFQDECTKEFVGSIVITRYNNRTYRIDDIEWSKSPKDTFTLADGSVTTFVDYYRKNYGITIKELDQPLLIHRPKERSRPGGKVITGEILLLPELSFMTGIPEKMRKDFRAMKDLTMHINVGAQQHTQSLKQLLHNINSNNEALSELGRWGLSISQEILVTQGRTLPSETICLHSASFVTSPAVDWSRELVRDPSISTVPLNCWAVFYPRRATDQAEELVTTFSRVAGPMGMRVERPIRVELRDDRTETFVKSIHSQLTSEPRVQLVVCIMTGNRDDLYSAIKKLCCIQSPVPSQAINVRTISQPQKLRSVAQKILLQINCKLGGELWTVNVPLKYLMVIGVDVHHDTSKKSRSVMGFVASLNSMLTKWYSRVTFQMPNEEIINGFRVCLLAALQKYYEVNHAFPEKIVIYRDGVSDGQLKTVEHYEIPQILKCFETIPNYEPKLAFIVVQKRISTTLYSYGSDHFGTPSPGTVLDHTVTNRDWVDFYLMAHSIRQGCGLPTHYITVYNTANLTPDHLQRLTFKMCHLYWNWPGTIRVPAPCKYAHKLAFLSGQYLHSEPAIQLSEKLFFL

Gene
PIWIL2
Protein
Piwi-like protein 2
Organism
Homo sapiens
Length
973 amino acids
Function
Endoribonuclease that plays a central role during spermatogenesis by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity (By similarity). Plays an essential role in meiotic differentiation of spermatocytes, germ cell differentiation and in self-renewal of spermatogonial stem cells (By similarity). 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 (By similarity). During piRNA biosynthesis, plays a key role in the piRNA amplification loop, also named ping-pong amplification cycle, by acting as a 'slicer-competent' piRNA endoribonuclease that cleaves primary piRNAs, which are then loaded onto 'slicer-incompetent' PIWIL4 (By similarity). PIWIL2 slicing produces a pre-miRNA intermediate, which is then processed in mature piRNAs, and as well as a 16 nucleotide by-product that is degraded (By similarity). Required for PIWIL4/MIWI2 nuclear localization and association with secondary piRNAs antisense (By similarity). Besides their function in transposable elements repression, piRNAs are probably involved in other processes during meiosis such as translation regulation (By similarity). Indirectly modulates expression of genes such as PDGFRB, SLC2A1, ITGA6, GJA7, THY1, CD9 and STRA8 (By similarity). When overexpressed, acts as an oncogene by inhibition of apoptosis and promotion of proliferation in tumors (PubMed:16377660). Represses circadian rhythms by promoting the stability and activity of core clock components ARNTL/BMAL1 and CLOCK by inhibiting GSK3B-mediated phosphorylation and ubiquitination-dependent degradation of these proteins (PubMed:28903391).
Similarity
Belongs to the argonaute family. Piwi subfamily.
Mass
109.849 kDa
Sequence
MDPFRPSFRGQSPIHPSQCQAVRMPGCWPQASKPLDPALGRGAPAGRGHVFGKPEEPSTQRGPAQRESVGLVSMFRGLGIETVSKTPLKREMLPSGRGILGRGLSANLVRKDREELSPTFWDPKVLAAGDSKMAETSVGWSRTLGRGSSDASLLPLGRAAGGISREVDKPPCTFSTPSRGPPQLSSPPALPQSPLHSPDRPLVLTVEHKEKELIVKQGSKGTPQSLGLNLVKIQCHNEAVYQYHVTFSPNVECKSMRFGMLKDHQAVTGNVTAFDGSILYLPVKLQQVLELKSQRKTDSAEISIKIQMTKILEPCSDLCIPFYNVVFRRVMKLLDMKLVGRNFYDPTSAMVLQQHRLQIWPGYAASIRRTDGGLFLLADVSHKVIRNDCVLDVMHAIYQQNKEHFQDECTKLLVGNIVITRYNNRTYRIDDVDWNKTPKDSFTMSDGKEITFLEYYSKNYGITVKEEDQPLLIHRPSERQDNHGMLLKGEILLLPELSFMTGIPEKMKKDFRAMKDLAQQINLSPKQHHSALECLLQRIAKNEAATNELMRWGLRLQKDVHKIEGRVLPMERINLKNTSFITSQELNWVKEVTRDPSILTIPMHFWALFYPKRAMDQARELVNMLEKIAGPIGMRMSPPAWVELKDDRIETYVRTIQSTLGAEGKIQMVVCIIMGPRDDLYGAIKKLCCVQSPVPSQVVNVRTIGQPTRLRSVAQKILLQINCKLGGELWGVDIPLKQLMVIGMDVYHDPSRGMRSVVGFVASINLTLTKWYSRVVFQMPHQEIVDSLKLCLVGSLKKFYEVNHCLPEKIVVYRDGVSDGQLKTVANYEIPQLQKCFEAFENYQPKMVVFVVQKKISTNLYLAAPQNFVTPTPGTVVDHTITSCEWVDFYLLAHHVRQGCGIPTHYVCVLNTANLSPDHMQRLTFKLCHMYWNWPGTIRVPAPCKYAHKLAFLSGHILHHEPAIQLCENLFFL

Gene
Piwil2
Protein
Piwi-like protein 2
Organism
Mus musculus
Length
971 amino acids
Function
Endoribonuclease that plays a central role during spermatogenesis by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity (PubMed:11578866, PubMed:14736746, PubMed:17446352, PubMed:18381894, PubMed:18922463, PubMed:26669262). Plays an essential role in meiotic differentiation of spermatocytes, germ cell differentiation and in self-renewal of spermatogonial stem cells (PubMed:11578866, PubMed:14736746, PubMed:17446352, PubMed:18381894, PubMed:18922463, PubMed:26669262). Its presence in oocytes suggests that it may participate in similar functions during oogenesis in females (PubMed:11578866, PubMed:14736746, PubMed:17446352, PubMed:18381894, PubMed:18922463, PubMed:26669262). 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 (PubMed:11578866, PubMed:14736746, PubMed:17446352, PubMed:18381894, PubMed:18922463, PubMed:26669262). During piRNA biosynthesis, plays a key role in the piRNA amplification loop, also named ping-pong amplification cycle, by acting as a 'slicer-competent' piRNA endoribonuclease that cleaves primary piRNAs, which are then loaded onto 'slicer-incompetent' PIWIL4 (PubMed:22020280, PubMed:23706823, PubMed:26669262). PIWIL2 slicing produces a pre-miRNA intermediate, which is then processed in mature piRNAs, and as well as a 16 nucleotide by-product that is degraded (PubMed:28633017). Required for PIWIL4/MIWI2 nuclear localization and association with secondary piRNAs antisense (PubMed:18381894, PubMed:18922463, PubMed:26669262). Besides their function in transposable elements repression, piRNAs are probably involved in other processes during meiosis such as translation regulation (PubMed:19114715). Indirectly modulates expression of genes such as PDGFRB, SLC2A1, ITGA6, GJA7, THY1, CD9 and STRA8 (PubMed:16261612). Represses circadian rhythms by promoting the stability and activity of core clock components ARNTL/BMAL1 and CLOCK by inhibiting GSK3B-mediated phosphorylation and ubiquitination-dependent degradation of these proteins (PubMed:28903391).
Similarity
Belongs to the argonaute family. Piwi subfamily.
Mass
109.488 kDa
Sequence
MDPVRPLFRGPTPVHPSQCVRMPGCWPQAPRPLEPAWGRAGPAGRGLVFRKPEDSSPPLQPVQKDSVGLVSMFRGMGLDTAFRPPSKREVPPLGRGVLGRGLSANMVRKDREEPRSSLPDPSVLAAGDSKLAEASVGWSRMLGRGSSEVSLLPLGRAASSIGRGMDKPPSAFGLTARDPPRLPQPPALSPTSLHSADPPPVLTMERKEKELLVKQGSKGTPQSLGLNLIKIQCHNEAVYQYHVTFSPSVECKSMRFGMLKDHQSVTGNVTAFDGSILYLPVKLQQVVELKSQRKTDDAEISIKIQLTKILEPCSDLCIPFYNVVFRRVMKLLDMKLVGRNFYDPTSAMVLQQHRLQIWPGYAASIRRTDGGLFLLADVSHKVIRNDSVLDVMHAIYQQNKEHFQDECSKLLVGSIVITRYNNRTYRIDDVDWNKTPKDSFVMSDGKEITFLEYYSKNYGITVKEDDQPLLIHRPSERQNNHGMLLKGEILLLPELSFMTGIPEKMKKDFRAMKDLTQQINLSPKQHHGALECLLQRISQNETASNELTRWGLSLHKDVHKIEGRLLPMERINLRNTSFVTSEDLNWVKEVTRDASILTIPMHFWALFYPKRAMDQARELVNMLEKIAGPIGMRISPPAWVELKDDRIETYIRTIQSLLGVEGKIQMVVCIIMGTRDDLYGAIKKLCCVQSPVPSQVINVRTIGQPTRLRSVAQKILLQMNCKLGGELWGVDIPLKQLMVIGMDVYHDPSRGMRSVVGFVASINLTLTKWYSRVVFQMPHQEIVDSLKLCLVGSLKKYYEVNHCLPEKIVVYRDGVSDGQLKTVANYEIPQLQKCFEAFDNYHPKMVVFVVQKKISTNLYLAAPDHFVTPSPGTVVDHTITSCEWVDFYLLAHHVRQGCGIPTHYICVLNTANLSPDHMQRLTFKLCHMYWNWPGTIRVPAPCKYAHKLAFLSGQILHHEPAIQLCGNLFFL

Gene
piwil2
Protein
Piwi-like protein 2
Organism
Xenopus tropicalis
Length
949 amino acids
Function
Endoribonuclease that plays a central role during spermatogenesis by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity. Plays an essential role in meiotic differentiation of spermatocytes, germ cell differentiation and in self-renewal of spermatogonial stem cells. 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. During piRNA biosynthesis, plays a key role in the piRNA amplification loop, also named ping-pong amplification cycle, by acting as a 'slicer-competent' piRNA endoribonuclease that cleaves primary piRNAs, which are then loaded onto 'slicer-incompetent' piwil4. Piwil2 slicing produces a pre-miRNA intermediate, which is then processed in mature piRNAs, and as well as a 16 nucleotide by-product that is degraded. Required for piwil4/miwi2 nuclear localization and association with secondary piRNAs antisense. Represses circadian rhythms by promoting the stability and activity of core clock components ARNTL/BMAL1 and CLOCK (By similarity).
Similarity
Belongs to the argonaute family. Piwi subfamily.
Mass
106.966 kDa
Sequence
MDPTRPPFRGSPFHTPLGVRPPVLETKEEGPHGRAVLLPRGRALLGASAPSSDTTQRDPSDSRNVLPALFRGMGIETKPSGIPGRGGPVFGRGFLSTMSSGDGPDQPLSEPSIRPSLSTRVQQASDFSTERVALGRARFPIPPVSMEKPHVPTGRGLLFPSVLPTLTSDPVPKESPIATLQIEKEEKWEPLPKKGSKGSPCQLGLNLIKINFQNEAVYQYHVTFTPIVECRSMRFGMMKDHRSVTGPVTAFDGSILYLPVKLAQTVELESERRTDGQKIKITIQMTKILDPSSDLCLPFYNVVMRRVFKILDLKLVGRNFYDPASSTVLQQYRLQVWPGYAANIRKTDGGLFLLVDITHKIIRSDSVLDIMNILYQQSPENFQDEVTKQLVGSIVITRYNNRTYRIDDIEWNMSPKDSFSMSDGSKISFIDYYSKNYGITVKELDQPLLLHRPSERKAPKGKALDIVLLLPELAFMTGIPEKMRKDFRAMKDLTQQIHLSPKQHHISLGKLLKRIESSADAKNELQRWGLFLDTDIHMTTGRILPIEKINLRNNSFPAGEDLNWNREVTREACRSSVHLLYWAMIYPKRASAQAQELSSMLERIGGPIGIRVNHPNCVELRDDRVETYARSIKSLLEGEGKVQLLVCLISGTRDDLYGAIKKLCCVQNPVPSQVINTRTISQPQKLRSIAQKILLQINCKLGGELWGVDIPLKSVMVIGMDVYHDPSRGMRSVLGFVASINSCLTAWYSRVVFQLPNQEIMDSLKLCLVAALQKFFEVNHSLPEKIVVYRDGVSDGQLNTVENYEIPQLQTCFQTFDNYNPRMVVIVVQKRVSTNLYSTATGQFLTPQPGTVIDHTVTNRKWIDFFLMSHHVRQGCGIPTHYICVMNTANLGPDHLQRLTFKLCHMYWNWPGTIRVPAPCKYAHKLAFLSGQFLHHEPSIKLCDKLFFL