• Universal length fluctuations of actin structures found in cells

    1. Aldric Rosario
    2. Shane G. McInally
    3. Predrag R. Jelenkovic
    4. Bruce L. Goode
    5. Jane Kondev
    This article has 3 evaluations Latest evaluation on Published on Added on

    Annotation by Prachee Avasthi Recommended Reading

    Length control of cytoskeletal filaments and superstructures is a really interesting area of study given maintenance of length is typical critical for polymer function. This new interesting model attempts to describe to actin filaments across various superstructures found in different cell/tissue types. Ultimately, a balance of assembly and disassembly can’t explain the observed length variance of filaments alone but considering crosslinked actin bundles (with filaments exponentially distributed within and defined by the length of the longest filament) can explain the observed variance relative to mean bundle length. There’s an interesting side prediction of the decay of bundle width as a function of distance from the assembly site which is consistent with observed width changes in yeast actin cables.

  • Ciliary protein CEP290 regulates focal adhesion via microtubule system in non-ciliated cells1

    1. Kazuhiko Matsuo
    2. Yoshiro Nakajima
    3. Masaki Shigeta
    4. Daisuke Kobayashi
    5. Shinichiro Sakaki
    6. Satoshi Inoue
    7. Naoki Takeshita
    8. Atsuko Ueyama
    9. Kousuke Nishikawa
    10. Rie Saba
    11. Takahiko Yokoyama
    12. Kenta Yashiro
    This article has 2 evaluations Latest evaluation on Published on Added on

    Annotation by Prachee Avasthi Recommended Reading

    Cilia proteins often have extra ciliary roles but this is a particularly interesting result because the protein in question is CEP290, a protein whose function seems so localization dependent. It’s thought to comprise the Y-links that can be seen by electron microscopy to link the ciliary microtubule core to the ciliary membrane in a region known to gate what goes in and what stays out of the cilium (called the transition zone). Authors find here that there are extra ciliary roles in microtubule dynamics and cell adhesion for CEP290 in IMCD3 cells when they are cycling and don’t have cilia. It would be interesting to note any CEP290 functions in a cell that was truly cilium-incompetent like Jurkat T cells.

  • Non-muscle myosin 2 filaments are processive in cells

    1. Eric A. Vitriol
    2. Melissa A. Quintanilla
    3. Joseph J. Tidei
    4. Lee D. Troughton
    5. Abigail Cody
    6. Bruno A. Cisterna
    7. Makenzie L. Jane
    8. Patrick W. Oakes
    9. Jordan R. Beach
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    Annotation by Prachee Avasthi Recommended Reading

    Really well written article showing for the first time that non-muscle myosin 2, largely thought to be contractile rather than processive, has the ability to move toward the leading edge of cells on parallel actin bundles (against retrograde actin flow).

  • Evolution of the ribbon-like organization of the Golgi apparatus in animal cells

    1. Giovanna Benvenuto
    2. Serena Leone
    3. Emanuele Astoricchio
    4. Sophia Bormke
    5. Sanja Jasek
    6. Enrico D’Aniello
    7. Maike Kittelmann
    8. Kent McDonald
    9. Volker Hartenstein
    10. Valentina Baena
    11. HĂ©ctor EscrivĂ 
    12. Stephanie Bertrand
    13. Bernd Schierwater
    14. Pawel Burkhardt
    15. Iñaki Ruiz-Trillo
    16. Gáspár Jékely
    17. Jack Ullrich-LĂĽter
    18. Carsten LĂĽter
    19. Salvatore D’Aniello
    20. Maria Ina Arnone
    21. Francesco Ferraro
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    Annotation by Prachee Avasthi Recommended Reading

    This paper is a neat example of correlating cell level traits (ribbon-like Golgi) with protein evolution (interaction of Golgi architecture proteins predicted using alpha fold) to make hypotheses about the origin of cellular structures and associated functions