Intermediate filaments in alpha-keratins.
نویسندگان
چکیده
منابع مشابه
Tailless keratins assemble into regular intermediate filaments in vitro.
To study the influence of the non alpha-helical tail domain of keratins in filament formation, we prepared a truncated keratin 8 mutant, K8/tailless. Using site-directed in vitro mutagenesis we introduced a stop codon in the position coding for amino acid number 417 of the K8/wild-type sequence, thereby deleting 86 amino acids of the non alpha-helical tail domain but leaving the consensus seque...
متن کاملFrom ultra-soft slime to hard {alpha}-keratins: The many lives of intermediate filaments.
Intermediate filaments are filaments 10 nm in diameter that make up an important component of the cytoskeleton in most metazoan taxa. They are most familiar for their role as the fibrous component of α-keratins such as skin, hair, nail, and horn but are also abundant within living cells. Although they are almost exclusively intracellular in their distribution, in the case of the defensive slime...
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Intermediate filaments form a class of insoluble cytoplasmic filaments ofdimensions intermediate in size between those of microtubules (about 25 nm in diameter) and microfilaments (about 7 nm in diameter). Thus, they are generally known as intermediate-sized filaments (IF)' or 10-nm filaments. They have been identified in virtually all differentiated types ofcells and it seems possible that IF-...
متن کاملGCP6 binds to intermediate filaments: a novel function of keratins in the organization of microtubules in epithelial cells.
In simple epithelial cells, attachment of microtubule-organizing centers (MTOCs) to intermediate filaments (IFs) enables their localization to the apical domain. It is released by cyclin-dependent kinase (Cdk)1 phosphorylation. Here, we identified a component of the gamma-tubulin ring complex, gamma-tubulin complex protein (GCP)6, as a keratin partner in yeast two-hybrid assays. This was valida...
متن کاملIntermediate filaments in smooth muscle.
The intermediate filament (IF) network is one of the three cytoskeletal systems in smooth muscle. The type III IF proteins vimentin and desmin are major constituents of the network in smooth muscle cells and tissues. Lack of vimentin or desmin impairs contractile ability of various smooth muscle preparations, implying their important role for smooth muscle force development. The IF framework ha...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1986
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.83.5.1179