80096 Results for: "LC-MS"

Supplier: Prosci

Autophagy, the process of bulk degradation of cellular proteins through an autophagosomic-lysosomal pathway is important for normal growth control and may be defective in tumor cells. It is involved in the preservation of cellular nutrients under starvation conditions as well as the normal turnover of cytosolic components (1,2). This process is negatively regulated by TOR (Target of rapamycin) through phosphorylation of autophagy protein APG1 (3). ATG5, another member of the autophagy protein family, forms a conjugate with ATG12; this conjugate has a ubiquitin-protein ligase (E3)-like activity for protein lipidation in autophagy (4). This conjugate also associates with innate immune response proteins such as RIG-I and VISA (also known as IPS-1), inhibiting type I interferon production and permitting viral replication in host cells (5).

Supplier: Prosci

Autophagy, the process of bulk degradation of cellular proteins through an autophagosomic-lysosomal pathway is important for normal growth control and may be defective in tumor cells. It is involved in the preservation of cellular nutrients under starvation conditions as well as the normal turnover of cytosolic components (1,2). This process is negatively regulated by TOR (Target of rapamycin) through phosphorylation of autophagy protein APG1 (3). Another member of the autophagy family of proteins is APG7 which was identified in yeast as a ubiquitin-E1-like enzyme; this function is conserved in the mammalian homolog (4). In mammalian cells, APG7 is essential for autophagy conjugation systems, autophagosome formation, starvation-induced bulk degradation of proteins and organelles (5). It has been suggested that caspase-8 may alter APG7 levels and thus the APG7 program of autophagic cell death (6).

Supplier: Prosci

Actins are highly conserved proteins that are involved in various types of cell motility, and maintenance of the cytoskeleton. In vertebrates, three main groups of actin isoforms, α, β and γ have been identified. The α actins are found in muscle tissues and are a major constituent of the contractile apparatus. The β and γ actins co-exist in most cell types as components of the cytoskeleton, and as mediators of internal cell motility. Actin, γ 1, encoded by this gene, is a cytoplasmic actin found in nonmuscle cells.
FUNCTION: Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells.
SUBUNIT: Polymerization of globular actin (G-actin) leads to a structural filament (F-actin) in the form of a two-stranded helix. Each actin can bind to 4 others.

Supplier: SPEX CERTIPREP LLC

Heavy Metals & Minerals Testing Kits
For routinely analyzed Heavy Metals and Minerals

Heavy Metals and Minerals Testing Kits are designed for routinely analyzed heavy metals and minerals. All kits come with six, 30 ml standards which includes a nitiric acid blank for easy dilution. Conveniently packaged in a sturdy, heavy-duty carton, these kits are perfect to store on a lab bench or in a cabinet. The 30 ml standards ship non-hazardous, saving money on shipping costs. The smaller volume also allows for less hazardous waste should the standard expire before its contents are used.

Supplier: YSI

The EC300M offers convenient measurement of conductivity, specific conductance, salinity, total dissolved solids, and temperature in many field applications. Compared to the EcoSense® EC300A the EC300M features extended memory and simple data transfer with a micro-USB port.

Supplier: Prosci

Regulator of calcineurin 2 (RCAN2), also known as ZAKI4 and DSCR1L1, is expressed as two isoforms differing at their N-terminus. The longer of the two (isoform 1) is expressed exclusively in the brain, while isoform 2 is ubiquitously expressed, with highest expression in brain, heart, and muscle (1,2). Both isoforms bind to the catalytic subunit of calcineurin, a Ca++-dependent protein phosphatase involved in several neuronal functions, though their C-terminal region and inhibit calcineurin’s activity (3). Unlike isoform 1 of RCAN2, the expression of the second isoform is not induced by the thyroid hormone T3 (3). RCAN2 is a member of a family of three endogenous calcineurin regulators that are located near the minimal supernumerary fragment of chromosome 21 in individuals with Down syndrome, suggesting that they play a role in this syndrome (4).

Supplier: ACCU-SCOPE INC SE

Monocular microscopes are easy to use and student friendly.

Supplier: Invitrogen

The Thermo Scientific Pierce Magnetic RNA-Protein Pull-Down Kit provides researchers with a streamlined, robust method to enrich protein-RNA interactions using end-labeled RNA as the bait.

Supplier: Mettler Toledo

Ideal for routine pH, mV, Conductivity, Salinity, Ion concentration, Specific resistance and TDS measurements

Supplier: MicroSolv Technology Corp

These HPLC columns have a silica hydride surface similar to other TYPE-C™ phases with all the TYPE-C silica benefits. The value of Phenyl Hydride™ is that they have unique selectivity for compounds with aromatic rings and because of the direct silicon carbon bonds, these columns are extremely stable with long column lifetime. These columns can be used in Reversed Phase (RP), Aqueous Normal Phase (ANP) or Normal Phase (NP) and changed back and forth without damage to the columns.

Supplier: Prosci

Nuclear factor kappa B (NF-B) is a ubiquitous transcription factor and an essential mediator of gene expression during activation of immune and inflammatory responses. NF-B mediates the expression of a great variety of genes in response to extracellular stimuli including IL-1, TNF and LPS. A serine/threonine protein kinase associated with IL-1 receptor (IRAK) and its homologue mouse pelle-like protein kinase (mPLK) were identified recently (1,2). IRAK is associated with the IL-1 receptor subunits IL-1RI and IL-1RAcP after IL-1 binding and serves as a signaling molecule to mediate IL-1 response (3). IRAK mediates a signaling cascade leading to NF-B activation by members in IL-1 family including IL-1 and a novel cytokine IL-18 (also termed IGIF) (1,4).

Supplier: Sartorius

Compact Arium® Mini laboratory water systems have been designed for Type 1 ultrapure water requirements of 10 L per day and are ideal for use in preparation of buffers, media and samples, both in life sciences applications and in analytical laboratory procedures.

Supplier: ANTIBODIES.COM LLC

Human MTR ELISA kit is a sandwich Enzyme-Linked Immunosorbent Assay (sELISA) designed for the in vitro quantitative determination of human MTR in serum, plasma, tissue homogenates, and other biological fluids.

Supplier: SPARKLE LABS

Electronics and intro to programming in one box! Discover Electronics provides a foundation in prototyping electronics and gives you the basics you need to create circuits for your Arduino microcontroller. A class in a box: visual manuals and additional online lessons move you easily from learning electronics to basic programming.

Supplier: Prosci

Apoptosis plays a major role in normal organism development, tissue homeostasis, and removal of damaged cells. Disruption of this process has been implicated in a variety of diseases such as cancer (reviewed in 1). The Bcl-2 family of proteins is comprised of critical regulators of apoptosis that can be divided into two classes: those that inhibit apoptosis and those that promote cell death (reviewed in 2 and 3). MTCH2 is a member of the mitochondrial carrier protein family that catalyze the exchange of substrates across the inner mitochondrial membrane and is targeted by Bid, a pro-apoptotic Bcl-2 family member, in response to apoptotic signals (4-6), suggesting that MTCH2 may play a key role in the mitochondrial apoptosis pathway. The doublet observed in the SDS-PAGE is likely due to incomplete removal of the signal sequence.

Supplier: THERMO SCIENTIFIC PORTABLE

Pharmaceutical and biotechnology manufacturers must ensure the quality of materials – from incoming raw material through finished product.

Supplier: YSI

The Pro30 provides everything you need in a handheld meter that measures salinity, conductivity, specific conductance, total dissolved solids, and temperature

Supplier: Prosci

The fragmentation of nuclear DNA is a hallmark of apoptotic cell death. The activities of caspase and nuclease are involved in the DNA fragmentation. Caspase-activated deoxyribo-nuclease (CAD), also termed DNA fragmentation factor (DFF40), is one such nuclease, and is capable of inducing DNA fragmentation and chromatin condensation after cleavage by caspase-3 of its inhibitor ICAD/DFF45. Caspase and CAD independent DNA fragmentation also exists. Recent studies demonstrated that another nuclease, endonuclease G (EndoG), is specifically activated by apoptotic stimuli and is able to induce nucleosomal fragmentation of DNA independently of caspase and DFF/CAD (1-3). EndoG is a mitochondrion-specific nuclease that translocates to the nucleus and cleaves chromatin DNA during apoptosis. The homologue of mammalian EndoG is the first mitochondrial protein identified to be involved in apoptosis in C. elegans (2). EndoG also cleaves DNA in vitro (4).

Supplier: Prosci

Apoptosis is related to many diseases and development. The p53 tumor-suppressor protein induces apoptosis through transcriptional activation of several genes. A novel p53 inducible pro-apoptotic gene was identified recently and designated PUMA (for p53 upregulated modulator of apoptosis) and bbc3 (for Bcl-2 binding component 3) in human and mouse (1-3). PUMA is one of the pro-apoptotic Bcl-2 family members including Bax and Noxa, which are also transcriptional targets of p53. The PUMA gene encodes two BH3 domain-containing proteins termed PUMA-α and PUMA-β (1). PUMA proteins bind Bcl-2, localize to the mitochondria, and induce cytochrome c release and apoptosis in response to p53. PUMA may be a direct mediator of p53-induced apoptosis. This PUMA recombinant protein is recognized by several ProSci PUMA monoclonal antibodies, but not the two polyclonal antibodies (PSI # 3041 and 3043).

Supplier: Prosci

CD4 is a member of the immunoglobulin superfamily and is implicated as associative recognition element in MHC (Major Histocompatibility Complex) class II-restricted immune response (1). On T-lymphocytes, it defines the helper/inducer subset. The mature 55 kd CD4 protein consists of a 372 amino acid extracellular segment composed of four tandem immunoglobulin-like VJ regions. The CD4 molecule is a major receptor for human immunodeficiency virus (HIV), binding directly to the envelope glycoprotein gp120 on HIV, with the co-receptors being CCR5 or CXCR4. It has been shown that the V-like domains are critical for binding with HIV envelope gp120 (2). This soluble CD4 fragment (sCD4) will work in HIV neutralization assays at levels comparable to previously published results. The minor upper band seen in the Coomassie blue-stained gel is likely to be due to the presence of uncleaved signal sequence.

Supplier: Restek

The mix consists of acetonitrile 2.05 mg/ml), chlorobenzene (1.8 mg/ml), cyclohexane (19.4 mg/ml), cis-1,2-dichloroethene (4.675 mg/ml), trans-1,2-dichloroethene (4.675 mg/ml), 1,4-dioxane (1.9 mg/ml), ethylbenzene (1.84 mg/ml), isopropylbenzene (cumene) (0.35 mg/ml), methanol (15 mg/ml), methylcyclohexane (5.9 mg/ml), methylene chloride (dichloromethane) (3 mg/ml), tetrahydrofuran (3.6 mg/ml), toluene (4.45 mg/ml), m-xylene (6.51 mg/ml), o-xylene (0.98 mg/ml), p-xylene (1.52 mg/ml).

Supplier: Invitrogen

Thermo Scientific Heavy and Light Amino Acids are used to specifically analyze protein expression by mass spectrometry using stable isotope labeling with amino acids in cell culture (SILAC) quantification kits.

Supplier: LEARN ENGINES SE

A fun Who-Done-It mystery that teaches through Problem Based Learning.

Supplier: Invitrogen

Heavy and Light Amino Acids are used to specifically analyze protein expression by mass spectrometry using stable isotope labeling with amino acids in cell culture (SILAC) quantification kits. Store at 2 - 8˚C.

Supplier: Prosci

Apoptosis plays a major role in normal organism development, tissue homeostasis, and removal of damaged cells. Disruption of this process has been implicated in a variety of diseases such as cancer (reviewed in 1). Apoptosis is induced by certain cytokines including TNF and Fas ligand of the TNF family through their death domain containing receptors, TNF-R1 and Fas. Several death receptors including DR3, DR4, DR5, and DR6 have been identified. Like TNF-R1, DR6 (also known as TNFRSF21) interacts with death domain containing adapter molecule TRADD. Overexpression of DR6 induces apoptosis and activates NF-B and JNK. DR6 is widely expressed in human tissues and cell lines (2). Recently, DR6 was found to interact with an amino-terminal fragment of the Beta-amyloid protein (APP) in neurons, activating a caspase 6-dependent apoptotic event leading to axonal degeneration and pruning (3).

Supplier: Mettler Toledo

The XPR26PC allows fast and highly accurate pipette verifications according to ISO8655 for volumes between 1 and 100 µl. Supported by status light, level control, and internal calibration, producing reliable results every time.

Supplier: YSI

The ProSolo handheld represents the evolution of YSI's line of portable Dissolved Oxygen field meters. It replaces the ProODO as YSI's most advanced optical dissolved oxygen field meter and is ideal for a diverse range of applications that include aquaculture, coastal, estuary, wastewater, and wetland sampling.

Supplier: Biotium

Lumitein™ is a luminescent dye designed for detecting proteins in SDS polyacrylamide (SDS-PAGE) gels. It can also be used to detect proteins in native PAGE gels after an additional SDS incubation step. The stain combines excellent sensitivity, exceptional user-friendliness and compatibility with common instruments and downstream analysis.

Supplier: HANNA INSTRUMENTS

This laboratory pH meter delivers precision while offering simplicity and versatility in a sleek design.

Supplier: Thermo Fisher Scientific

The Thermo Scientific™ Orion™ Pro Star EC212 conductivity bench meter is designed to provide accurate, reliable electrochemistry testing. Featuring an intuitive interface, enhanced data reporting and robust functionality, the Orion™ Pro Star EC212 meter delivers advanced performance in a modern and simplified package.