6201 Results for: "3-(Trifluoromethyl)quinoxaline-2-carboxylic+acid&pageNo=31&view=easy"

Supplier: Portwest

Portwest WX3 contemporary workwear is designed to the highest standards and offer a solution for everyday activity and working environments. Constructed with cutting edge fabrics giving superior abrasion resistance and exceptional all-day comfort. The WX3 work trousers are made from durable poly-cotton canvas fabric and includes triple stitched seams and stretch panelling providing excellent comfort and flexibility.

Supplier: PHOENIX BIOMEDICAL

Clear PS. Ideal for colony counting.

Supplier: 3M MEDICAL

The Zeta Plus™ EXT series media extends depth filtration capacity and protection of downstream membranes thereby extending filter life and lowering overall filtration costs.

Supplier: Bioss

Composed of more than ten subunits, the anaphase-promoting complex (APC) acts in a cell-cycle dependent manner to promote the separation of sister chromatids during the transition between metaphase and anaphase in mitosis. APC, or cyclosome, accomplishes this progression through the ubiquitination of mitotic cyclins and other regulatory proteins that are targeted for destruction during cell division. APC is phosphorylated, and thus activated, by protein kinases Cdk1/cyclin B and polo-like kinase (Plk). APC is under tight control by a number of regulatory factors, including CDC20, CDH1 and MAD2. Specifically, CDC20 and CDH1 directly bind to and activate the cyclin-ubiquitination activity of APCs. In contrast, MAD2 inhibits APC by forming a ternary complex with CDC20 and APC, thus preventing APC activation. APC10 contains a Doc1 homology domain, which is a beta-sandwich structure common to many other putative E3 ubiquitin ligases. APC10 binds to core APC subunits throughout the cell cycle. Specifically, APC10 binds to the C-terminus of CDC27/APC3. During mitosis, APC10 is localised in centrosomes and mitotic spindles. APC10 also localizes to kinetochores from prophase to anaphase, and to the midbody in telophase and cytokinesis.

Supplier: Bioss

c-Jun NH2-terminal kinases (JNKs) are distant members of the MAP kinase family (1). JNK1 is activated by dual phosphorylation at a Thr-Pro-Tyr motif in response to ultraviolet (UV) light, and it functions to phosphorylate c-Jun at amino terminal serine regulatory sites, Ser-63 and Ser-73, resulting in transcriptional activation (2-5). Two additional JNK family members have been identified as JNK2 and JNK3 (3). JIP-1 (for JNK interacting protein-1) has been identified as a cytoplasmic inhibitor of JNK that retains JNK in the cytoplasm, thereby inhibiting JNK-regulated gene expression. Evidence suggests that JNK1 and JNK2 bind to JIP-1 with greater affinity than to ATF-2 and c-Jun, which are targets of the JNK signaling pathway. JIP-1 contains an amino terminal JNK binding domain and a carboxy terminal SH3 domain. ATF-2 and c-Jun also contain the JNK binding domain and are thought to compete with JIP-1 for JNK binding (6). Multiple splice variants if JIP-1, including JIP-1b, JIP-1c (also designated islet-brain 1 or IB-1), JIP-2a, JIP-2b and JIP-3, have been identified in brain (7).

Supplier: Bioss

c-Jun NH2-terminal kinases (JNKs) are distant members of the MAP kinase family (1). JNK1 is activated by dual phosphorylation at a Thr-Pro-Tyr motif in response to ultraviolet (UV) light, and it functions to phosphorylate c-Jun at amino terminal serine regulatory sites, Ser-63 and Ser-73, resulting in transcriptional activation (2-5). Two additional JNK family members have been identified as JNK2 and JNK3 (3). JIP-1 (for JNK interacting protein-1) has been identified as a cytoplasmic inhibitor of JNK that retains JNK in the cytoplasm, thereby inhibiting JNK-regulated gene expression. Evidence suggests that JNK1 and JNK2 bind to JIP-1 with greater affinity than to ATF-2 and c-Jun, which are targets of the JNK signaling pathway. JIP-1 contains an amino terminal JNK binding domain and a carboxy terminal SH3 domain. ATF-2 and c-Jun also contain the JNK binding domain and are thought to compete with JIP-1 for JNK binding (6). Multiple splice variants if JIP-1, including JIP-1b, JIP-1c (also designated islet-brain 1 or IB-1), JIP-2a, JIP-2b and JIP-3, have been identified in brain (7).

Supplier: Bioss

The LIN-12/Notch family of transmembrane receptors plays a central role in development by regulating cell fate and establishing boundaries of gene expression. Notch Signalling activates the Hairy/Enhancer of split (HES) genes, which encode basic helix-loop-helix (bHLH) transcriptional repressors that are critical for directing embryonic patterning and development. The Hairy-related transcription factors (HRTs) comprise a subclass of bHLH proteins that exhibit structural similarity with the HES proteins and include HRT1, HRT2 and HRT3. The HRT family (also designated Hesr, Hey, CHF and Gridlock) contain a bHLH domain, an Orange domain and a novel YRPW domain, which is absent in HRT3. The Hairy-related genes map to human chromosomes 8q21, 6q21 and 1p34.3 for HRT1, HRT2 and HRT3, respectively, and are downstream targets for Notch Signalling. HRT1 is expressed in the somitic mesoderm, central nervous system, kidney, heart, nasal epithelium and limb buds in murine embryos as well as in adult tissues. It has altered expression in many breast, lung and kidney tumours. Like HRT1, HRT2 and HRT3 are also expressed in developing somites, heart and nervous system.

Supplier: MOTIC

Microscope for basic work in biology life science. Fixed Koehler set-up, rackless stage, nice plan achromatic optics. The Motic BA 210 is robust and ready to use with pre-installed set-up of optics and halogen illumination, interchangeable with a LED module (LED to be purchased separately).

Supplier: OHAUS

A range of four-place balances incorporate touch screen, advanced weighing and touch-free proximity sensor technologies. The easy to use control unit can be mounted on the base, above the base on an optional column, on a wall, or remotely (up to a distance of 3 metres with an optional cable). The touch screen display, with universal icons and informative prompts, simplifies set-up functions and basic operation. The operator has the added choice to assign the use of any of the four proximity sensors for hands-free operation of print, zero, tare, calibrate, automatic draft shield door (left or right) or draft shield light. The hands-free operation enables the user to minimise/eliminate any possible contamination of the control keypad - particularly important for weighing of sensitive materials. The balances have multiple application modes for basic weighing to SQC applications together with short stabilisation times and optimised performance specifications.

Supplier: Bioss

This gene encodes coagulation factor XII which circulates in blood as a zymogen. This single chain zymogen is converted to a two-chain serine protease with an heavy chain (alpha-factor XIIa) and a light chain. The heavy chain contains two fibronectin-type domains, two epidermal growth factor (EGF)-like domains, a kringle domain and a proline-rich domain, whereas the light chain contains only a catalytic domain. On activation, further cleavages takes place in the heavy chain, resulting in the production of beta-factor XIIa light chain and the alpha-factor XIIa light chain becomes beta-factor XIIa heavy chain. Prekallikrein is cleaved by factor XII to form kallikrein, which then cleaves factor XII first to alpha-factor XIIa and then to beta-factor XIIa. The active factor XIIa participates in the initiation of blood coagulation, fibrinolysis, and the generation of bradykinin and angiotensin. It activates coagulation factors VII and XI. Defects in this gene do not cause any clinical symptoms and the sole effect is that whole-blood clotting time is prolonged.

Supplier: asecos

Fireproof safety cabinets, classified type 90 (fire resistant up to 90 minutes), safe, durable, robust and convenient with transport base and bicoloured cabinet design. The PEGASUS line is nearly identical to the CLASSIC line, but with integrated AGT (one handed operation for double door cabinets) and integrated TSA (door open arrest system and automatic door closing).

Supplier: Sartorius Balances

The Cubis® II laboratory balances are modular, providing choice between applications and configurations that best suit the users' needs. These balances can be configured at the level of display, draftshields, software applications and hardware functions. The Cubis® II range of high-capacity micro balances with a maximum load between 32 and 111 g and a readability between 0,001 mg and 0,002 mg provide the ideal choice for a broad range of applications.

Supplier: Bioss

This gene encodes coagulation factor XII which circulates in blood as a zymogen. This single chain zymogen is converted to a two-chain serine protease with an heavy chain (alpha-factor XIIa) and a light chain. The heavy chain contains two fibronectin-type domains, two epidermal growth factor (EGF)-like domains, a kringle domain and a proline-rich domain, whereas the light chain contains only a catalytic domain. On activation, further cleavages takes place in the heavy chain, resulting in the production of beta-factor XIIa light chain and the alpha-factor XIIa light chain becomes beta-factor XIIa heavy chain. Prekallikrein is cleaved by factor XII to form kallikrein, which then cleaves factor XII first to alpha-factor XIIa and then to beta-factor XIIa. The active factor XIIa participates in the initiation of blood coagulation, fibrinolysis, and the generation of bradykinin and angiotensin. It activates coagulation factors VII and XI. Defects in this gene do not cause any clinical symptoms and the sole effect is that whole-blood clotting time is prolonged.

Supplier: OHAUS

These digital heavy duty orbital shakers are designed for a wide range of applications, including cell cultures, that require accurate and repeatable results. The microprocessor control provides consistent uniform shaking while safely ramping to the set speed. Ideal for cell cultures, solubility studies, and extraction procedures. The large capacity shakers have a more powerful drive mechanism and larger orbits for optimal shaking of large vessels.

Supplier: EPPENDORF

Eppendorf® Xplorer® plus electronic single-channel pipettes provide an accurate, precise, ergonomic liquid handling solution, featuring an intuitive interface, programmable modes, and advanced charging technology for reliable, efficient pipetting, enhancing reproducibility and minimising errors.

Supplier: EPPENDORF

Eppendorf Xplorer plus multi-channel pipettes offer the ideal solution for precise, efficient liquid handling in high-throughput applications, with ergonomic design, a user-friendly interface, and programmable modes for quick, reliable pipetting, enhancing reproducibility and minimising errors.

Supplier: Ahlstrom-Munksjö

Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions. High Purity hardened filter papers grades 1288 to 1291 are also produced from cellulose with an alpha content of nearly 100% resulting in an ash content of <0,1%.

Supplier: Portwest

The DX4 holster trouser is ergonomically designed and uses the targeted placement of dynamic 4X stretch fabrics to give maximum range of movement when working. The trouser features a high-rise back waistband with side elastication, ensuring protection in all working positions.

Supplier: HEATHROW

Compact digital orbital shaker which is packed full of high end design features making this laboratory shaker a versatile unit for a vast range of protocols.

Supplier: MEMMERT

The range includes forced convection models with a temperature range up to 300 °C. There is a choice of two different displays, SingleDISPLAY or TwinDISPLAY depending on the application.

Supplier: Binder

CO₂ incubators with a built in CO₂ sensor which can be sterilised. Units offer optimum growth conditions for cell cultures and meet demanding requirements for best possible cell growth and maximum sample safety. The ANTI.PLENUM design minimises surfaces due to the seamless, deep-drawn inner chamber without fixtures and featuring an integrated shelf support system. This reduces the risk of contamination, giving less surface area and fewer parts to clean manually, and removes the running costs of consumables. Reliable decontamination is provided by the standard-compliant 180 °C hot air sterilisation routine which completely eliminates contaminants and ensures the inner chamber is completely sterilised.

Supplier: Bioss

Spinal muscular atrophy (SMA) is an autosomal recessive neurodegenerative disease characterised by loss of motor neurons in the spinal cord. SMA is caused by deletion or loss-of-function mutations of SMN (survival of motor neuron) gene. SMN, also known as Gemin1, SMN1, SMNT and BCD541, exists as four isoforms produced by alternative splicing. SMN is oligomeric and forms a complex with Gemin2 (formerly SIP1), Gemin3 (a DEAD box RNA helicase), Gemin4, Gemin5 and Gemin6, as well as several spliceosomal snRNP proteins. The SMN complex plays an essential role in splicesomal snRNP assembly in the cytoplasm and is required for pre-mRNA splicing of the nucleus. The SMN complex is found in both the cytoplasm and the nucleus. The nuclear form is concentrated in subnuclear bodies called gems (gemini of the coiled bodies). Cytoplasmic SMN interacts with spliceosomal Sm proteins and facilitates their assembly onto U snRNAs, and nuclear SMN mediates recycling of pre-mRNA splicing factors. Nearly identical telomeric and centromeric forms of SMN encode the same protein; however, only mutations in the telomeric form are associated with the disease-state SMA. SMN is expressed in a wide variety of tissues including brain, kidney, liver, spinal cord and moderately in skeletal and cardiac muscle.

Supplier: Bioss

HSPC300 (hematopoietic stem cell protein 300) is also known as probable protein BRICK1 or C3orf10 (chromosome 3 open reading frame 10) and is a 75 amino acid protein that is expressed as two isoforms and localises to both the cytoplasm and the cytoskeleton. HSPC300 is thought to regulate cytoskeletal organisation and Actin polymerization. Free HSPC300 exists as homotrimers prior to its incorporation into the WAVE complex. The WAVE complex includes five proteins, one of which is HSPC300, that regulate the ARC (Arp2/3 complex) which is responsible for Actin nucleation and is Rac 1-dependent. Because HSPC300 is a highly conserved subunit of the WAVE complex across many species, it is thought to have the same or similar functions in many different organisms. In Drosophila, the WAVE/ARC pathway may affect the development of the nervous system. HSPC300 is thought to localise to axons of the central nervous system of Drosophila embryos and thus may also be involved in axonogenesis. In addition, HSPC300 is thought to be necessary for synaptic morphogenesis by motoneurons. In mice, the knockout of the WAVE complex leads to learning and memory defects, and it is therefore hypothesized that HSPC300 may also be involved in cognitive functions. Genetic depletion of HSPC300 results in cytoskeletal abnormalities and prevents cytokinesis of cells, suggesting that decreased levels of HSPC300 may be associated with tumor suppression.

Supplier: MOTIC

Panthera E2 microscope combine high quality materials and precise engineering, user-friendly design. With a 360º rotatable head specially for space-saving storage, and an extreme efficient low power illumination, allowing it to run on a Mobile Battery Pack for several hours. It has been designed for Academic Lab demand.

Supplier: THERMO H + P LABORTECHNIK

Compact magnetic stirrers with VARIOMAG drive, hermetically sealed in resistant stainless steel housing (except MINI units which are plastic), making these stirrers ideal for use directly in water baths. MINI stirrers are ideal for integration in analytical instruments, cuvette holders or photometers due to their size, however these plastic units are not designed for use directly in baths. There are units with up to 60 stirring positions in this range, and a choice of three external control units. The TELEMODUL 7 has one power setting, the TELEMODUL 20 C has four power settings: 25%; 50%; 75% and 100% and can store three programmes, the TELEMODUL 40 C features ten different power settings from 10 to 100% and a RS232 interface.

Supplier: Ahlstrom-Munksjö

These qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers cover a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions.

Supplier: Bioss

Spinal muscular atrophy (SMA) is an autosomal recessive neurodegenerative disease characterised by loss of motor neurons in the spinal cord. SMA is caused by deletion or loss-of-function mutations of SMN (survival of motor neuron) gene. SMN, also known as Gemin1, SMN1, SMNT and BCD541, exists as four isoforms produced by alternative splicing. SMN is oligomeric and forms a complex with Gemin2 (formerly SIP1), Gemin3 (a DEAD box RNA helicase), Gemin4, Gemin5 and Gemin6, as well as several spliceosomal snRNP proteins. The SMN complex plays an essential role in splicesomal snRNP assembly in the cytoplasm and is required for pre-mRNA splicing of the nucleus. The SMN complex is found in both the cytoplasm and the nucleus. The nuclear form is concentrated in subnuclear bodies called gems (gemini of the coiled bodies). Cytoplasmic SMN interacts with spliceosomal Sm proteins and facilitates their assembly onto U snRNAs, and nuclear SMN mediates recycling of pre-mRNA splicing factors. Nearly identical telomeric and centromeric forms of SMN encode the same protein; however, only mutations in the telomeric form are associated with the disease-state SMA. SMN is expressed in a wide variety of tissues including brain, kidney, liver, spinal cord and moderately in skeletal and cardiac muscle.

Supplier: Merck

Fast method development of complex samples across the pH range from 1,5 to 10,5 with different mobile phases and temperature conditions.
Purospher® STAR RP-18 endcapped HPLC columns are designed for universal use. Basic, neutral and metal-chelating compounds can easily be separated with simple mobile phases – naturally without peak tailing. Thanks to its outstanding performance and stability, Purospher® STAR RP-18 endcapped offers maximum flexibility in method development. Robust methods can be developed over the entire pH range from 1,5 to 10,5. High pH-stability allows the separation of strongly basic compounds with alkaline eluents. The combination of high purity silica, best all-round retention characteristics, outstanding pH stability up to pH 10,5, and suitability for up to 100% aqueous mobile phases, make Purospher® STAR RP-18 endcapped an all-round top performance column, almost universal in its range of applications.

Supplier: HAMILTON BONADUZ

These syringes are the Gastight® version of the original 700 series syringes and are ideal for dispensing volumes from 1 µl up to 500 µl.

Supplier: Ahlstrom-Munksjö

Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions.