Abstract:
:Recent work demonstrates that RNA interference (RNAi) can coordinate protein expression. Inhibitory RNAs are expressed naturally in cells as microRNAs (miRNAs) or introduced into cells as small interfering RNAs (siRNAs). Both types of small RNAs can be used at the bench to silence mRNA expression. For many researchers, transfection of siRNAs synthesized in vitro or purchased from commercial sources is impractical for the cellular system under study. As an alternative to transfection-based methods, we provide a practical approach to accomplish siRNA-mediated gene silencing through the generation and introduction of recombinant viral vectors expressing short hairpin RNAs (shRNAs). shRNAs are subsequently processed to siRNAs in vivo, leading to efficient, and, in some cases, long-term silencing.
journal_name
Methods Enzymoljournal_title
Methods in enzymologyauthors
Davidson BL,Harper SQdoi
10.1016/S0076-6879(04)92009-5subject
Has Abstractpub_date
2005-01-01 00:00:00pages
145-73eissn
0076-6879issn
1557-7988pii
S0076687904920095journal_volume
392pub_type
杂志文章abstract::Two-hybrid systems are one of the most popular, preferred, cost effective, and scalable in vivo genetic approaches for screening protein-protein interactions. A number of variants of yeast and bacterial two-hybrid systems exist, rendering them ideal for modern, flexible proteomics-driven studies. For mapping protein i...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/bs.mie.2016.10.020
更新日期:2017-01-01 00:00:00
abstract::Essentially the same steps are required to solve the crystal structure of a serpin as for any other protein: produce and purify protein, grow crystals, collect diffraction data, find estimates of the phase angles, and then refine and validate the structure. For the phasing step, experimental phasing methods involving ...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/B978-0-12-385950-1.00004-3
更新日期:2011-01-01 00:00:00
abstract::For mRNAs encoding secretory and integral membrane proteins, translation initiation is thought to begin a process of mRNA localization where mRNA/ribosome/nascent chain complexes (RNCs) are trafficked from the cytosol compartment to the endoplasmic reticulum (ER). At the ER membrane, RNCs bind to a protein-conducting ...
journal_title:Methods in enzymology
pub_type: 杂志文章,评审
doi:10.1016/S0076-6879(07)31004-5
更新日期:2007-01-01 00:00:00
abstract::We provide a brief description of a Wikibook open-content textbook that was set up with a goal of providing a comprehensive and continually updated list of all of the software packages of interest to the cryo-EM community. While the content of the Wikibook will change over time, here we provide a snapshot of the curre...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(10)82016-6
更新日期:2010-01-01 00:00:00
abstract::The ability of a systemically administered gene therapy vector to exhibit extended circulation lifetimes, accumulate at a distal tumor site, and enable transgene expression is unique to SPLP. The flexibility and low toxicity of SPLP as a platform technology for systemic gene therapy allows for further optimization of ...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/s0076-6879(02)46048-x
更新日期:2002-01-01 00:00:00
abstract::Genomes can be viewed in terms of their gene content and the order in which the genes appear along each chromosome. Evolutionary events that affect the gene order or content are "rare genomic events" (rarer than events that affect the composition of the nucleotide sequences) and have been advocated by systematists for...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(05)95035-0
更新日期:2005-01-01 00:00:00
abstract::A genetic interaction occurs when the combination of two mutations leads to an unexpected phenotype. Screens for synthetic genetic interactions have been used extensively to identify genes whose products are functionally related. In particular, synthetic lethal genetic interactions often identify genes that buffer one...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(10)70007-0
更新日期:2010-01-01 00:00:00
abstract::Intracellular protein degradation is one of the most precisely regulated processes in living cells. The main component of the degradation machinery is the 20S proteasome present in eukaryotes as well as in prokaryotes. We have developed successful purification protocols for the 20S proteasome in its native state using...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(05)98027-0
更新日期:2005-01-01 00:00:00
abstract::In the presence of specialized proteins or peptides, a biological membrane can spontaneously restructure itself to allow communication between the intracellular and the extracellular sides. Examples of these proteins include cell-penetrating peptides and antimicrobial peptides (AMPs), which interact with cell membrane...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/B978-0-12-381268-1.00016-1
更新日期:2011-01-01 00:00:00
abstract::Hexameric helicases couple the energy of ATP hydrolysis to processive movement along nucleic acids and are critical components of cells and many viruses. Molecular motion derives from ATP hydrolysis at up to six distinct catalytic centers, which is coupled to the coordinated action of translocation loops in the center...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/B978-0-12-396546-2.00008-5
更新日期:2012-01-01 00:00:00
abstract::Although the function of histone deacetylases (HDACs) have primarily been associated with influencing transcription through chromatin remodeling, the capacity of these enzymes to interface with a diverse array of biologic processes by modulating a growing list of nonhistone substrates has gained recent attention. Rece...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/B978-0-12-385114-7.00010-6
更新日期:2011-01-01 00:00:00
abstract::Pulsed EPR methods for the study of drug binding to heme-thiolate enzymes such as cytochrome P450 and nitric oxide synthase are discussed. HYSCORE and ENDOR methods to measure (1)H of axial ligands of the heme group are described with illustrations of water serving as the axial ligand in the drug-free enzyme and ligan...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/bs.mie.2015.07.005
更新日期:2015-01-01 00:00:00
abstract::The microbial production of commodity, fine, and specialty chemicals is a driving force in biotechnology. An essential requirement is to introduce biosynthetic pathways to the target compound(s) into chassis organisms. First suitable enzymes must be selected and characterized, and then genetic pathways must be designe...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/bs.mie.2018.04.011
更新日期:2018-01-01 00:00:00
abstract::There is now considerable experimental evidence that aberrant activation of Rho family small GTPases promotes uncontrolled proliferation, invasion, and metastatic properties of human cancer cells. Therefore, there is considerable interest in the development of small molecule inhibitors of Rho GTPase function. However,...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(07)00409-0
更新日期:2008-01-01 00:00:00
abstract::Cholestatic syndromes are inborn or acquired disorders of bile formation. In recent years, several inherited cholestatic syndromes were characterized at the molecular level: progressive familial intrahepatic cholestasis (PFIC) and benign recurrent intrahepatic cholestasis (BRIC). Both PFIC and BRIC were divided phenot...
journal_title:Methods in enzymology
pub_type: 杂志文章,评审
doi:10.1016/S0076-6879(05)00031-5
更新日期:2005-01-01 00:00:00
abstract::Ras proteins are small GTPases that exhibit high-affinity binding to GDP and GTP and hydrolyze bound GTP to GDP. The intrinsic GTPase activity of Ras proteins is accelerated by GTPase activating proteins (GAPs), which act to attenuate GTPase signaling by accelerating the conversion of bound GTP to bound GDP. Tumor-ass...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(05)07002-3
更新日期:2006-01-01 00:00:00
abstract::Precise investigation and manipulation of gene function often require modulation in a controlled and dynamic manner. In this chapter, we describe the methods to apply HIT systems for drug inducible transcriptional activation or simultaneous activation and genome editing in human cells. Together with those for editing,...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/bs.mie.2019.02.032
更新日期:2019-01-01 00:00:00
abstract::Metagenomics has become an important tool for the characterization of microorganisms, as it is independent of their enrichment or cultivation in the laboratory. Its application has led to the discovery of metabolisms from widespread, yet uncharacterized organisms such as the ammonia-oxidizing archaea. Different approa...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/B978-0-12-386489-5.00013-0
更新日期:2011-01-01 00:00:00
abstract::Obtaining patient-specific information through the quantification of small molecules and proteins in bodily fluids is essential for personalized therapies. Point-of-care (POC) diagnostic devices hold the promise of delivering such benefit to a wide range of patients. However, there is a lack of enabling technology, as...
journal_title:Methods in enzymology
pub_type: 杂志文章,评审
doi:10.1016/bs.mie.2017.01.005
更新日期:2017-01-01 00:00:00
abstract::Mitochondrial RNAs in the myxomycete Physarum polycephalum differ from the templates from which they are transcribed in defined ways. Most transcripts contain nucleotides that are not present in their respective genes. These "extra" nucleotides are added during RNA synthesis by an unknown mechanism. Other differences ...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(07)24007-8
更新日期:2007-01-01 00:00:00
abstract::The Ras gene family has been implicated in the development of many human epithelial cancers. Mutations in K-ras or its downstream mediator BRAF have been detected in about two thirds of low-grade serous carcinomas and borderline serous tumors; mutations in K-ras are also often present in benign and invasive mucinous o...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(05)07052-7
更新日期:2006-01-01 00:00:00
abstract::Cryptococcus neoformans is a yeastlike fungus that causes a lethal meningoencephalitis in a broad spectrum of immunocompromised patients and has become the most common cause of meningitis due to AIDS-related infections in Africa. Key to the development of new agents to control and prevent this infection is the identif...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(08)03222-9
更新日期:2008-01-01 00:00:00
abstract::In mice with lupus nephritis qualitative changes in anti-DNA antibodies occur, such as IgG switch and increased cationic charge, to render these antibodies pathogenic. Pathogenic anti-DNA idiotypes can be encoded by genes of a normal mouse strain such as SWR, where they remain dormant. When the normal mice are crossed...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/0076-6879(88)62094-5
更新日期:1988-01-01 00:00:00
abstract::During the past several years, major progress has been accomplished in the production of "designer cellulosomes," artificial enzymatic complexes that were demonstrated to efficiently degrade crystalline cellulose. This progress is part of a global attempt to promote biomass waste solutions and biofuel production. In d...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/B978-0-12-415931-0.00023-9
更新日期:2012-01-01 00:00:00
abstract::Circadian clocks control daily rhythms in physiology and behavior across all phyla. These rhythms are intrinsic to individual cells that must synchronize to their environment and to each other to anticipate daily events. Recent advances in recording from large numbers of cells for many circadian cycles have enabled re...
journal_title:Methods in enzymology
pub_type: 杂志文章,评审
doi:10.1016/bs.mie.2014.10.042
更新日期:2015-01-01 00:00:00
abstract::We describe the basic principles for imaging frozen-hydrated specimens in a transmission electron microscope and provide a step-by-step guide to a new user, from starting up and aligning the microscope, to loading a cryo-grid into the specimen holder and inserting the holder into the microscope, to setting up the low ...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/S0076-6879(10)81010-9
更新日期:2010-01-01 00:00:00
abstract::Transporters are crucial in a number of cellular functions, including nutrient uptake, cell signaling, and toxin removal. As such, transporters are important drug targets and their malfunction is related to several disease states. Treating transporter-related diseases and developing pharmaceuticals targeting transport...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/bs.mie.2017.05.012
更新日期:2017-01-01 00:00:00
abstract::Numerous microbial processes transform nitrogen (N) but three anaerobic respiratory pathways remove fixed N from the environment: denitrification (nitrate conversion to N(2)), anaerobic ammonium oxidation (anammox; ammonium plus nitrite conversion to N(2)), and nitrite dependent methane oxidation (nitrite conversion t...
journal_title:Methods in enzymology
pub_type: 杂志文章,评审
doi:10.1016/B978-0-12-386489-5.00003-8
更新日期:2011-01-01 00:00:00
abstract::Adiponectin is a circulating bioactive hormone secreted by adipocytes as oligomers ranging in size from 90 kDa trimers and 180 kDa hexamers to larger high molecular weight oligomers that may reach 18- or 36-mers in size. While total circulating adiponectin levels correlate well with metabolic health, it is the relativ...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/B978-0-12-411619-1.00013-6
更新日期:2014-01-01 00:00:00
abstract::5-FOA is an extremely useful reagent for the selection of Ura- cells amid a population of Ura+ cells. The selection is effective in transformation and recombination studies where loss of URA3+ is desired. A new plasmid shuffling procedure based on the 5-FOAR selection permits the recovery of conditional lethal mutatio...
journal_title:Methods in enzymology
pub_type: 杂志文章
doi:10.1016/0076-6879(87)54076-9
更新日期:1987-01-01 00:00:00