نتایج جستجو برای: β tubulin
تعداد نتایج: 187441 فیلتر نتایج به سال:
Cellular α-tubulin can bear various carboxy-terminal sequences: full-length tubulin arising from gene neosynthesis is tyrosinated, and two truncated variants, corresponding to detyrosinated and Δ2 α‑tubulin, result from the sequential cleavage of one or two C-terminal residues, respectively. Here, by using a novel antibody named 3EG that is highly specific to the -EEEG C-terminal sequence, we d...
Molecules that alter the normal dynamics of microtubule assembly and disassembly include many anticancer drugs in clinical use. So far all such therapeutics target β-tubulin, and structural biology has explained the basis of their action and permitted design of new drugs. However, by shifting the profile of β-tubulin isoforms, cancer cells become resistant to treatment. Compounds that bind to α...
PURPOSE Peripheral neuropathy is the dose-limiting toxicity of paclitaxel, a chemotherapeutic drug widely used to treat several solid tumors such as breast, lung, and ovary. The cytotoxic effect of paclitaxel is mediated through β-tubulin binding in the cellular microtubules. In this study, we investigated the association between paclitaxel neurotoxicity risk and regulatory genetic variants in ...
چکیده تعداد گونه های قارچی موجود حدود 5/1 میلیون عدد برآورد شده است که تا امروز کمتر از 10 درصد آنها توصیف شده اند. با پیشرفت های اخیر در زیست شناسی مولکولی و توسعه فناوری هایی مثل توالی یابی ژنی و ژنومی، کشف و شناسایی گونه های جدید در گروه های مختلف موجودات زنده به ویژه قارچ ها روند افزایشی به خود گرفته است. با توجه به ناکارآمدی روش های مبتنی بر ریخت شناسی برای شناسایی گونه های قارچی، استفاده ...
Pancreatic cancer is a leading cause of cancer-related deaths in Western societies. This poor prognosis is due to chemotherapeutic drug resistance and metastatic spread. Evidence suggests that microtubule proteins namely, β-tubulins are dysregulated in tumor cells and are involved in regulating chemosensitivity. However, the role of β-tubulins in pancreatic cancer are unknown. We measured the e...
Glutamylation, the most prevalent tubulin posttranslational modification, marks stable microtubules and regulates recruitment and activity of microtubule- interacting proteins. Nine enzymes of the tubulin tyrosine ligase-like (TTLL) family catalyze glutamylation. TTLL7, the most abundant neuronal glutamylase, adds glutamates preferentially to the β-tubulin tail. Coupled with ensemble and single...
Conjugate of podophyllotoxin with chlorambucil: synthesis, biological testing and molecular modeling
In the present work we have studied a novel conjugate of DNA alkylating agent chlorambucil with podophyllotoxin, ligand colchicine binding site in tubulin. The target compound was obtained by Steglich esterification podophyllotoxin percentage yield 41%. Results biotesting carried out on carcinoma A549 cell line revealed that at concentration 2 μM caused full depolymerization microtubules withou...
این زیر جنس که اغلب از اندام های هوایی غلات در مناطق شمال و شمال غرب و تعدادی هم از سایر بسترها در ایران به دست آمده بودند، مورد مطالعه قرار گرفتند. براساس داده های ریخت شناسی و مولکولی (توالی های مناطق ژنی its rdna و β-tubulin)، تعداد نه گونه aspergillus متعلق به زیرجنس nidulantes شناسایی گردید که در بخش های nidulantes، usti، terrei و flavipedes گروه بندی شدند. آنالیزهای فیلوژنتیکی انجام گرفته...
The hominoid oncogene TBC1D3 enhances epidermal growth factor receptor (EGFR) signaling and induces cell transformation. However, little is known regarding its spatio-temporal regulation and mechanism of tumorigenesis. In the current study, we identified the microtubule subunit β-tubulin as a potential interaction partner for TBC1D3 using affinity purification combined with mass spectrometry an...
Tubulin tyrosine ligase (TTL) catalyzes the post-translational retyrosination of detyrosinated α-tubulin. Despite the indispensable role of TTL in cell and organism development, its molecular mechanism of action is poorly understood. By solving crystal structures of TTL in complex with tubulin, we here demonstrate that TTL binds to the α and β subunits of tubulin and recognizes the curved confo...
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