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  1. Piwi - Wikipedia

    Recently identified as a polar granule component, PIWI proteins appear to control germ cell formation so much so that in the absence of PIWI proteins there is a significant decrease in germ cell formation.

  2. The Biogenesis and Function PIWI Proteins and piRNAs: Progress …

    PIWI proteins play crucial roles during germline development and gametogenesis of many metazoan species, from germline determination and germline stem cell maintenance to meiosis, …

  3. Emerging roles and functional mechanisms of PIWI-interacting RNAs

    Sep 14, 2022 · PIWI-interacting RNAs (piRNAs) are a class of small non-coding RNAs that associate with proteins of the PIWI clade of the Argonaute family. First identified in animal germ line cells, …

  4. What Are Piwi-interacting RNAs and What Do They Do?

    Jul 31, 2025 · Piwi-interacting RNAs, or piRNAs, are a class of small RNA molecules found within living organisms. Unlike other RNAs, piRNAs have a distinctive nature that has only recently begun to be …

  5. Ask a Wine Pro: What Is a ‘PiWi’ Grape? - VinePair

    Jul 15, 2025 · PiWi is a much-needed abbreviation for the German term Pilzwiderstandsfähige Rebsorten, which translates to fungus-resistant grape variety.

  6. Novel roles of PIWI proteins and PIWI-interacting RNAs in human …

    Nov 29, 2023 · The association of abnormally dysregulated piRNAs/PIWI proteins with human diseases can be broadly divided into two categories. On the one hand, the blue background of piRNA/PIWI …

  7. Piwi - an overview | ScienceDirect Topics

    Piwi-interacting RNAs (piRNAs) are a class of small non-coding RNAs, approximately 24–32 nucleotides in length, primarily expressed in germline cells, that play crucial roles in gene silencing, genome …

  8. Piwi-interacting RNA - Wikipedia

    Piwi-interacting RNA (piRNA) is the largest class of small non-coding RNA molecules expressed in animal cells. [1][2][3] piRNAs form RNA- protein complexes through interactions with piwi -subfamily …

  9. Structural insights into RNA cleavage by PIWI Argonaute

    Jan 15, 2025 · Here we demonstrate that after target binding, PIWI proteins undergo a conformational change from an ‘open’ state to a ‘locked’ state, facilitating base pairing and enhancing target cleavage...

  10. PIWI RNA: Powerful Regulators of Germline Integrity

    Apr 29, 2025 · PIWI-interacting RNAs (piRNAs) are a distinct class of small non-coding RNAs, typically ranging from 24 to 31 nucleotides in length. This size range sets them apart from microRNAs …