کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2047452 1073979 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The pH sensibility of actin-bundling LIM proteins is governed by the acidic properties of their C-terminal domain
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
The pH sensibility of actin-bundling LIM proteins is governed by the acidic properties of their C-terminal domain
چکیده انگلیسی
Actin-bundling Arabidopsis LIM proteins are subdivided into two subfamilies differing in their pH sensitivity. Widely-expressed WLIMs are active under low and high physiologically-relevant pH conditions, whereas pollen-enriched PLIMs are inactivated by pH values above 6.8. By a domain swapping approach we identified the C-terminal (Ct) domain of PLIMs as the domain responsible for pH responsiveness. Remarkably, this domain conferred pH sensitivity to LIM proteins, when provided “in trans” (i.e., as a single, independent, peptide), indicating that it operates through the interaction with another domain. An acidic 6xc-Myc peptide functionally mimicked the Ct domain of PLIMs and efficiently inhibited LIM actin bundling activity under high pH conditions. Together, our data suggest a model where PLIMs are regulated by an intermolecular interaction between their acidic Ct domain and another, yet unidentified, domain.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 589, Issue 18, 19 August 2015, Pages 2312-2319
نویسندگان
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