Post-translational modifications of tubulin
نویسندگان
چکیده
Microtubules are the largest filamentous components of the eukaryotic cytoskeleton. In spite of their extraordinary level of structural conservation, microtubules fulfill a vast range of different functions in cells. How this functional diversity is achieved remains an open question; however, recent advances point towards post-translational modifications (PTMs) of tubulin as a potent mechanism to generate microtubule identities. As many microtubule functions have direct implications for development and homeostasis of organisms, understanding the molecular functions of tubulin PTMs could provide a more differentiated view on the role of microtubules in both normal and pathological aspects of organism development.
منابع مشابه
Tubulin Post-Translational Modifications and Microtubule Dynamics
Microtubules are hollow tube-like polymeric structures composed of α,β-tubulin heterodimers. They play an important role in numerous cellular processes, including intracellular transport, cell motility and segregation of the chromosomes during cell division. Moreover, microtubule doublets or triplets form a scaffold of a cilium, centriole and basal body, respectively. To perform such diverse fu...
متن کاملTubulin modifications and their cellular functions.
All microtubules are built from a basic alpha/beta-tubulin building block, yet subpopulations of microtubules can be differentially marked by a number of post-translational modifications. These modifications, conserved throughout evolution, are thought to act individually or in combination to control specific microtubule-based functions, analogous to how histone modifications regulate chromatin...
متن کاملTubulin post-translational modifications: encoding functions on the neuronal microtubule cytoskeleton.
In the past decades, a range of post-translational modifications has been discovered on tubulins, the major constituents of microtubules. Pioneering studies have described the occurrence and dynamics of these modifications and provided first insights into their potential functions in regulating the microtubule cytoskeleton. By contrast, several tubulin-modifying enzymes were only discovered in ...
متن کاملTubulin post-translational modifications and the construction of microtubular organelles in Trypanosoma brucei.
We have used specific monoclonal antibodies to facilitate a study of acetylated and tyrosinated alpha-tubulin in the microtubule (MT) arrays in the Trypanosoma brucei cell. Acetylated alpha-tubulin is not solely located in the stable microtubular arrays but is present even in the ephemeral microtubules of the mitotic spindle. Moreover, there is a uniform distribution of this isoform in all arra...
متن کاملHysteretic behavior and differential apparent stability properties of microtubule species emerge from the regulation of post-translational modifications of microtubules.
At the epigenetic level, microtubule diversity is generated by several mechanisms of reversible post-translational modifications of tubulin subunits. In most cases, modification enzymes preferentially act on the tubulin subunits of microtubules, whereas the substrate of the enzymes which ensure the reverse reaction is preferentially the alpha beta-dimer of nonpolymerized tubulin. Most modificat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Current Biology
دوره 24 شماره
صفحات -
تاریخ انتشار 2014