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排序方式: 共有103条查询结果,搜索用时 31 毫秒
31.
Carl R. Alving Zoltan Beck Nicos Karasavva Gary R. Matyas Mangala Rao 《Molecular membrane biology》2013,30(6):453-465
The human immunodeficiency virus type 1 (HIV-1) is an enveloped virus with a lipid bilayer that contains several glycoproteins that are anchored in, or closely associated with, the membrane surface. The envelope proteins have complex interactions with the lipids both on the host cells and on the target cells. The processes of budding from host cells and entry into target cells occur at sites on the plasma membrane, known as lipid rafts, that represent specialized regions that are rich in cholesterol and sphingolipids. Although the envelope glycoproteins are antigenic molecules that potentially might be used for development of broadly neutralizing antibodies in a vaccine to HIV-1, the development of such antibodies that have broad specificities against primary field isolates of virus has been largely thwarted to date by the ability of the envelope proteins to evade the immune system through various mechanisms. In this review, the interactions of HIV-1 with membrane lipids are summarized. Liposomes are commonly used as models for understanding interactions of proteins with membrane lipids; and liposomes have also been used both as carriers for vaccines, and as antigens for induction of antibodies to liposomal lipids. The possibility is proposed that liposomal lipids, or liposome-protein combinations, could be useful as antigens for inducing broadly neutralizing antibodies to HIV-1. 相似文献
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Gowri M Jahan SK Kavitha Prasannakumari Madhumathi Appaji L 《Indian journal of human genetics》2011,17(3):235-237
Acute myeloid leukemia (AML-M3) is associated with the translocation t(15;17)(q22;q12-21) which disrupts the retinoic acid receptor alpha (RARA) gene on chromosome 17 and the PML gene on chromosome 15. We report a two-year-old patient with AML-M3 without the usual translocation t(15;17). Cytogenetic studies demonstrated normal appearance of chromosome 15 while the abnormal 17 homologue was apparently a derivative 17, der(17)(17qter-cen-q21:), the rearrangement distinctly shows deletion at 17q21 band and the morphology corresponding to an iso chromosome i(17q-). This case report is a rare cytogenetic presentation of acute promyelocytic leukemia (APML). 相似文献
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Soundarapandian MM Wu D Zhong X Petralia RS Peng L Tu W Lu Y 《Journal of neurochemistry》2007,103(5):1982-1988
The Kir6.1 channels are a subtype of ATP-sensitive inwardly rectifying potassium (KATP ) channels that play an essential role in coupling the cell's metabolic events to electrical activity. In this study, we show that functional Kir6.1 channels are located at excitatory pre-synaptic terminals as a complex with type-1 Sulfonylurea receptors (SUR1) in the hippocampus. The mutant mice with deficiencies in expressing the Kir6.1 or the SUR1 gene are more vulnerable to generation of epileptic form of seizures, compared to wild-type controls. Whole-cell patch clamp recordings demonstrate that genetic deletion of the Kir6.1/SUR1 channels enhances glutamate release at CA3 synapses. Hence, expression of functional Kir6.1/SUR1 channels inhibits seizure responses and possibly acts via limiting excitatory glutamate release. 相似文献
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Background
Control of intercellular penetration of microbial products is critical for the barrier function of oral epithelia. We demonstrated that CD24 is selectively and strongly expressed in the cells of the epithelial attachment to the tooth and the epithelial lining of the diseased periodontal pocket and studies in vitro showed that CD24 regulated expression of the epithelial intercellular adhesion protein E-cadherin. 相似文献37.
NH stretching bands of N-acetyl-(glycine, L -alanine, L -leucine)-N′-methylamides in dilute chloroform solution have shown that these dipeptides are present as a mixture of intramolecularly hydrogen-bonded five-membered ring species and nonhydrogen bonded species. Integrated absorption intensity measurements revealed that the concentration of the intramolecularly hydrogen bonded species decreased from 62% in glycine to 35% in the L -leucine derivatives. 相似文献
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Plasma Proteome Database as a resource for proteomics research 总被引:1,自引:0,他引:1
Muthusamy B Hanumanthu G Suresh S Rekha B Srinivas D Karthick L Vrushabendra BM Sharma S Mishra G Chatterjee P Mangala KS Shivashankar HN Chandrika KN Deshpande N Suresh M Kannabiran N Niranjan V Nalli A Prasad TS Arun KS Reddy R Chandran S Jadhav T Julie D Mahesh M John SL Palvankar K Sudhir D Bala P Rashmi NS Vishnupriya G Dhar K Reshma S Chaerkady R Gandhi TK Harsha HC Mohan SS Deshpande KS Sarker M Pandey A 《Proteomics》2005,5(13):3531-3536
Plasma is one of the best studied compartments in the human body and serves as an ideal body fluid for the diagnosis of diseases. This report provides a detailed functional annotation of all the plasma proteins identified to date. In all, gene products encoded by 3778 distinct genes were annotated based on proteins previously published in the literature as plasma proteins and the identification of multiple peptides from proteins under HUPO's Plasma Proteome Project. Our analysis revealed that 51% of these genes encoded more than one protein isoform. All single nucleotide polymorphisms involving protein-coding regions were mapped onto the protein sequences. We found a number of examples of isoform-specific subcellular localization as well as tissue expression. This database is an attempt at comprehensive annotation of a complex subproteome and is available on the web at http://www.plasmaproteomedatabase.org. 相似文献
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The ubiquitin proteasomal system: a potential target for the management of Alzheimer's disease
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Ashutosh Ahire Rohit Pardeshi Krishan Thakur Cristiana Trandafir Alexandru Istrate Sahabuddin Ahmed Mangala Lahkar Dafin F. Muresanu Maria Balea 《Journal of cellular and molecular medicine》2016,20(7):1392-1407
The cellular quality control system degrades abnormal or misfolded proteins and consists of three different mechanisms: the ubiquitin proteasomal system (UPS), autophagy and molecular chaperones. Any disturbance in this system causes proteins to accumulate, resulting in neurodegenerative diseases such as amyotrophic lateral sclerosis, Alzheimer's disease (AD), Parkinson's disease, Huntington's disease and prion or polyglutamine diseases. Alzheimer's disease is currently one of the most common age‐related neurodegenerative diseases. However, its exact cause and pathogenesis are unknown. Currently approved medications for AD provide symptomatic relief; however, they fail to influence disease progression. Moreover, the components of the cellular quality control system represent an important focus for the development of targeted and potent therapies for managing AD. This review aims to evaluate whether existing evidence supports the hypothesis that UPS impairment causes the early pathogenesis of neurodegenerative disorders. The first part presents basic information about the UPS and its molecular components. The next part explains how the UPS is involved in neurodegenerative disorders. Finally, we emphasize how the UPS influences the management of AD. This review may help in the design of future UPS‐related therapies for AD. 相似文献
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