Proteomic analysis reveals the direct recruitment of intrinsically disordered regions to stress granules in S. cerevisiae

Mang Zhu, Erich R. Kuechler, Joyce Zhang, Or Matalon, Benjamin Dubreuil, Analise Hofmann, Chris Loewen, Emmanuel D. Levy, Joerg Gsponer, Thibault Mayor

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

Stress granules (SGs) are stress-induced membraneless condensates that store non-translating mRNA and stalled translation initiation complexes. Although metazoan SGs are dynamic compartments where proteins can rapidly exchange with their surroundings, yeast SGs seem largely static. To gain a better understanding of yeast SGs, we identified proteins that sediment after heat shock using mass spectrometry. Proteins that sediment upon heat shock are biased toward a subset of abundant proteins that are significantly enriched in intrinsically disordered regions (IDRs). Heat-induced SG localization of over 80 proteins were confirmed using microscopy, including 32 proteins not previously known to localize to SGs. We found that several IDRs were sufficient to mediate SG recruitment. Moreover, the dynamic exchange of IDRs can be observed using fluorescence recovery after photobleaching, whereas other components remain immobile. Lastly, we showed that the IDR of the Ubp3 deubiquitinase was critical for yeast SG formation. This work shows that IDRs can be sufficient for SG incorporation, can remain dynamic in vitrified SGs, and can play an important role in cellular compartmentalization upon stress.</p><p>This article has an associated First Person interview with the first author of the paper.<br />
اللغة الأصليةالإنجليزيّة
رقم المقالjcs244657
عدد الصفحات14
دوريةJournal of Cell Science
مستوى الصوت133
رقم الإصدار13
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 9 يوليو 2020

بصمة

أدرس بدقة موضوعات البحث “Proteomic analysis reveals the direct recruitment of intrinsically disordered regions to stress granules in S. cerevisiae'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا