145128 Results for: "Guanidinium+thiocyanate&pageNo=10&view=list"

Supplier: Thermo Fisher Scientific

Thermo Scientific Pierce EDC is a carboxyl- and amine-reactive zero-length crosslinker. EDC reacts with a carboxyl group first and forms an amine-reactive O-acylisourea intermediate that quickly reacts with an amino group to form an amide bond with release of an isourea by-product. The intermediate is unstable in aqueous solutions and so two-step conjugation procedures rely on N-hydroxysuccinimide (NHS) for stabilization. Failure to react with an amine will result in hydrolysis of the intermediate, regeneration of the carboxyl, and release of an N-substituted urea. A side reaction is the formation of an N-acylurea, which is usually restricted to carboxyls located in hydrophobic regions of proteins.

Supplier: ProSci Inc.

This antibody is specific to Complement 4d (C4d) and it reacts with the secreted as well as cell-bound protein. C4d is a degradation product of the activated complement factor C4b. Complement 4b is typically activated by binding of antibodies to specific target molecules. Following activation and degradation of the C4 molecule, thio-ester groups are exposed, which allow transient, covalent binding of the degradation product C4d to endothelial cell surfaces and extracellular matrix components of vascular basement membranes near the sites of C4 activation. The presence of C4d in peritubular capillaries is a key indicator for acute humoral (i.e. antibody-mediated) rejection of kidney, heart, pancreas and lung allografts. As an established marker of antibody-mediated acute renal allograft rejection and its proclivity for endothelium, this component can be detected in peritubular capillaries in chronic renal allograft rejection as well as hyperacute rejection, acute vascular rejection, acute cellular rejection, and borderline rejection. C4d has been shown to be a significant predictor of transplant kidney graft survival. C4d antibody, combined with antibody to C3d, can be utilized as a tool for diagnosis of allograft rejection that may warrant a prompt and aggressive anti-rejection treatment.

Supplier: ProSci Inc.

This mAb recognises a protein of 41 kDa, which is identified as TDP2, or ETS1 associated protein II. It is a member of a superfamily of divalent cation-dependent phosphodiesterases. The encoded protein associates with CD40, tumor necrosis factor (TNF) receptor-75 and TNF receptor associated factors (TRAFs), and inhibits nuclear factor-kappa-B activation. This protein has sequence and structural similarities with APE1 endonuclease, which is involved in both DNA repair and the activation of transcription factors. DNA repair enzyme that can remove a variety of covalent adducts from DNA through hydrolysis of a 5'-phosphodiester bond, giving rise to DNA with a free 5' phosphate. catalyses the hydrolysis of dead-end complexes between DNA and the topoisomerase 2 (TOP2) active site tyrosine residue. Hydrolyzes 5'-phosphoglycolates on protruding 5' ends on DNA double-strand breaks (DSBs) due to DNA damage by radiation and free radicals. The 5'-tyrosyl DNA phosphodiesterase activity can enable the repair of TOP2-induced DSBs without the need for nuclease activity, creating a 'clean' DSB with 5'-phosphate termini that are ready for ligation. Has also 3'-tyrosyl DNA phosphodiesterase activity, but less efficiently and much slower than TDP1. May also act as a negative regulator of ETS1 and may inhibit nuclear factor-kappa-B activation.

Supplier: BioAir S.p.A.

Safemate ECO+ Cabinets are supplied in four different sizes (0.9, 1.2, 1.5 and 1.8). These last generation Microbiological Safety Cabinets Class II type A2, have been certified according to the most stringent safety standards (EN 12469-2000). The internal design, the air flow aerodynamics and monitoring, the built-in safety devices and the very accurate manufacturing, guarantees the highest performances at the most stringent safety levels, as specified by EN 12469 standard and have been certified by the most prestigious European certification bodies for Safety Cabinets.

Supplier: MP Biomedicals

FastRNA® Pro Red Kit is used to isolate total RNA from yeast and fungi. Isolated RNA is suitable for RT-PCR analysis and other downstream applications

Supplier: Thermo Orion

Easy to use and budget friendly instrument for a wide range of applications and advanced pH analysis in the lab. Ideal for simple, routine pH, mV and temperature measurements.

Supplier: ProSci Inc.

Hemagglutinin Monoclonal Antibody: Influenza A virus is a major public health threat, killing more than 30,000 people per year in the USA. Novel influenza virus strains caused by genetic drift and viral recombination emerge periodically to which humans have little or no immunity, resulting in devastating pandemics. Influenza A can exist in a variety of animals; however it is in birds that all subtypes can be found. These subtypes are classified based on the combination of the virus coat glycoproteins hemagglutinin (HA) and neuraminidase (NA) subtypes. During 1997, an H5N1 avian influenza virus was determined to be the cause of death in 6 of 18 infected patients in Hong Kong. The more recent virulent strain of H5N1 is now seen in Africa and Europe, as well as in southeast Asia. There is some evidence of human to human spread of this virus, but it is thought that the transmission efficiency was fairly low. HA interacts with cell surface proteins containing oligosaccharides with terminal sialyl residues. Virus isolated from a human infected with the H5N1 strain in 1997 could bind to oligosaccharides from human as well as avian sources, indicating its species-jumping ability. While efforts were made to use relatively conserved regions of the viral sequence as the antigen, the influenza virus genome has drifted somewhat from what was first reported. However, this antibody was able to recognize peptides derrived from viruses from Indonesian human patients infected in 2007.

Supplier: Biotium

The DNA Gel Extraction Kit is a silica-gel, spin column based DNA extraction kit designed to purify 40 bp to 40 kb DNA fragments from agarose gels in TAE or TBE buffer.

Supplier: ProSci Inc.

Receptors for the Fc region of immunoglobin G (Fc gamma R) are divided into three classes and Fc gamma RIII is a multifunctional, low/intermediate affinity receptor. In humans, Fc gamma RIII is expressed as two distinct forms (Fc gamma RIIIA and Fc gamma RIIIB) that are encoded by two different but highly homologous genes in a cell type-specific manner. Fc gamma RIIIB is a low-affinity, GPI-linked receptor expressed by neutrophils and eosinophils, whereas Fc gamma RIIIA is an intermediate affinity polypeptide-anchored transmembrane glycoprotein expressed by a subset of T lymphocytes, natural killer (NK) cells, monocytes, and macrophages. The Fc gamma RIIIA receptor is involved in phagocytosis, secretion of enzymes, inflammatory mediators, antibody-dependent cellular cytotoxicity (ADCC), mast cell degranulation, and clearance of immune complexes. Fc gamma RIIIA has an immunoreceptor tyrosine-based activation motif (ITAM) in its cytoplasmic domain and delivers an activation signal in the immune responses. Aberrant expression or mutations in this gene is implicated in susceptibility to recurrent viral infections, systemic lupus erythematosus, and alloimmune neonatal neutropenia. In humans, it is a 50 -70 kD type I transmembrane activating receptor. The Fc gamma RIIIA cDNA encodes 254 amino acid including a 16aa signal sequence, 191 amino acid ECD with two C2-type Ig-like domains, five potential N-glycosylation sites, a 22 amino acid transmembrane sequence and a 25 amino acid cytoplasmic domain.

Supplier: MP Biomedicals

FastRNA® Pro Blue Kit is used to isolate total RNA from gram positive and gram negative bacteria. Isolated RNA is suitable for RT-PCR analysis and other downstream applications.

Supplier: ProSci Inc.

Hemagglutinin Monoclonal Antibody: Influenza A virus is a major public health threat, killing more than 30,000 people per year in the USA. Novel influenza virus strains caused by genetic drift and viral recombination emerge periodically to which humans have little or no immunity, resulting in devastating pandemics. Influenza A can exist in a variety of animals; however it is in birds that all subtypes can be found. These subtypes are classified based on the combination of the virus coat glycoproteins hemagglutinin (HA) and neuraminidase (NA) subtypes. During 1997, an H5N1 avian influenza virus was determined to be the cause of death in 6 of 18 infected patients in Hong Kong. The more recent virulent strain of H5N1 is now seen in Africa and Europe, as well as in southeast Asia. There is some evidence of human to human spread of this virus, but it is thought that the transmission efficiency was fairly low. HA interacts with cell surface proteins containing oligosaccharides with terminal sialyl residues. Virus isolated from a human infected with the H5N1 strain in 1997 could bind to oligosaccharides from human as well as avian sources, indicating its species-jumping ability. While efforts were made to use relatively conserved regions of the viral sequence as the antigen, the influenza virus genome has drifted somewhat from what was first reported. However, this antibody was able to recognize peptides derrived from viruses from Indonesian human patients infected in 2007.

Supplier: Thermo Fisher Scientific

Choose Thermo Scientific™ SureSTART™ 2 ml glass crimp top vials, performance level 3, for high performance applications, when sensitivity is a must. Our level 3 vials are our highest performance vials, designed to protect your most valuable samples and deliver consistent, reproducible results for your most demanding GC-MS. These 2 ml clear glass crimp vials are specification certified to ensure their physical dimensions and autosampler compatibility. Use 11 mm crimp caps and septa to seal these vials. Seal and remove your crimp caps using Thermo Scientific manual and electronic crimpers and decrimpers. These vials meet all requirements of US, EU, JPN Pharmacopeia. Buy in bulk for greater savings.

Supplier: VITLAB

Volumetric flask, PMP, class A, with stopper NS 12/21, PP, 50 mL 1 * 2 items

Supplier: Amarell

Areometer, specific gravity, ASTM, hydrometer number: 150H-62, measuring range:0.995-1.038:0.001sp gr, without thermometer, length:2 80mm, reference temperature:68/68F. 1 * 1 items

Supplier: Testo

Testo 871s thermal imager together with our experienced professionals to enable you to work quickly and easily with professional thermal imaging technology. Generates error-free and objectively comparable infrared images using its handy functions. The IFOV warner, testo ɛ-Assist and testo ScaleAssist mean can avoid measurement errors and not only effortlessly achieve optimum setting of emissivity (ɛ) and reflected temperature (RTC) for building thermography, but also of colour scale. This combines high infrared resolution with professional measuring performance and easy handling. Its high-quality pixel detector, an integrated digital camera and, last but not least, the innovative functions are the features that impress. The testo Thermography App enables the testo 871s to offer smart thermography to meet professional requirements in industry and trade. The case supplied with the thermal imager means it can be conveniently transported.

Supplier: DUPERTHAL

Exhaust air monitor optional with ventilator: Easy ventilation and monitoring of the venting system for safety cabinets. A sensor monitors the air flow speed/stream and gives a visual or audible signal if the value drops below the set-point value. The complete exhaust monitoring unit is supplied pre-assembled (ready to plug in) and is placed directly on the cabinet. The set-point value for the air stream flow rate is preset in the factory and can be individually adjusted by the pressure difference socket. In addition to the volumetric flow rate the power supply is also monitored. The system includes two floating contacts (24 V/2 A) for signal transmission to an external control room. Internal storage accumulator supplies the monitoring systems for 4 hours in the event of a power failure, display with easy fault indication and enables permanent monitoring according to DIN EN 1946-7. The housing is made from powder-coated sheet steel, silver pearl glimmer.

Supplier: OMEGA BIO-TEK

Gel purification of DNA is a common technique used for the isolation of specific DNA fragments. However, most methods either fail to completely remove agarose (which can lead to problems in downstream manipulations), shear the DNA, or result in very low yields.

Supplier: Sartorius Balances

The Cubis® II laboratory balances are modular, therefore they allow to choose between applications and configurations which suit the best to the needs. These balances can be configured at the level of display, draftshields, software applications and hardware functions.

Supplier: OMEGA BIO-TEK

The E.Z.N.A.® SQ blood DNA kit provides a reliable method for the isolation of high molecular weight genomic DNA from fresh, frozen, or anti-coagulated whole blood. The method can also be used for preparation of genomic DNA from buffy coat, bone marrow or cultured cells. There is no need for phenol/chloroform extractions, and time consuming steps such as CsCl gradient ultracentrifugation are eliminated. DNA purified using the E.Z.N.A.® SQ blood DNA method is ready for downstream applications such as PCR, southern blotting and restriction enzyme digestion.

Supplier: Amarell

Viscometer therm., ähnlich Engler, similar DIN, 0+200:1°C, enclosed scale, cap. prismatic, colourless, red special liquid, 300x6mm, 90mm immersion, with swelling, Richter-top finish, without button, suitable for government verification 1 * 1 items

Supplier: MP Biomedicals

Folic acid, also known as folate, is a B vitamin that can be found in a variety of fruits and vegetables. It can also be chemically synthesized. Folate, a watersoluble vitamin, helps the body form red blood cells and aids in the formation of genetic material within every body cell. This product exhibits metal binding properties. Hematopoietic vitamin present, free or combined with one or more additional molecules of L-(+)-glutamic acid, in liver, kidney, mushrooms, spinach, yeast, green leaves, and grasses.
Folic acid (Vitamin B9 and folate) is essential to numerous bodily functions. The human body needs folate to synthesize DNA, repair DNA, and methylate DNA as well as to act as a cofactor in certain biological reactions. It is especially important in aiding rapid cell division and growth, such as in infancy and pregnancy.
Folic acid (FA) and dihydrofolic acid (FAH2) are substrates of dihydrofolate reductase(s) which reduce them to tetrahydrofolate (THF), which in turn supports ‘one carbon’ transfer. Tetrahydrofolates are required for de novo synthesis of purines, thymidylic acid and various amino acids and for post-translational methylation (epigenetics).
Very slightly soluble in cold water (0.0016 mg/mL at 25 °C), soluble to about 1% in boiling water. Slightly soluble in methanol, appreciably less soluble in ethanol and butanol. Insoluble in acetone, chloroform, ether, benzene. Relatively soluble in acetic acid, phenol, pyridine, solutions of alkali hydroxides and carbonates. Soluble in hot dilute HCl and H2SO4.

Supplier: NEW PIG

Prevent slips, trips and falls in high traffic areas with our easy to clean, adhesive backed commercial floor mat.

Supplier: MP Biomedicals

SPINeasy PCR purification and gel extraction Kit is a silica-membrane spin-column kit that enables quick and convenient DNA clean up from various enzymatic reactions, such as PCR and restriction digestion, as well as isolation and purification of DNA fragments from agarose gel electrophoresis.

Supplier: Corning

Axygen power supplies are ideal for most electrophoresis needs.

Supplier: OMEGA BIO-TEK

Isolate plasmid DNA from up to 5 ml culture in 9 minutes utilizing an innovative lysate clearance column.

Supplier: ProSci Inc.

Histone deacetylase (HDAC) and histone acetyltransferase (HAT) are enzymes that regulate transcription by selectively deacetylating or acetylating the eta-amino groups of lysines located near the amino termini of core histone proteins (1). Eight members of HDAC family have been identified in the past several years (2,3). These HDAC family members are divided into two classes, I and II. Class I of the HDAC family comprises four members, HDAC-1, 2, 3, and 8, each of which contains a deacetylase domain exhibiting from 45 to 93% identity in amino acid sequence. Class II of the HDAC family comprises HDAC-4, 5, 6, and 7, the molecular weights of which are all about two-fold larger than those of the class I members, and the deacetylase domains are present within the C-terminal regions, except that HDAC-6 contains two copies of the domain, one within each of the N-terminal and C-terminal regions. Human HDAC-1, 2 and 3 were expressed in various tissues, but the others (HDAC-4, 5, 6, and 7) showed tissue-specific expression patterns (3). These results suggested that each member of the HDAC family exhibits a different, individual substrate specificity and function in vivo. HDAC8 interacts with PEPB2-MYH11, a fusion protein consisting of the 165 N-terminal residues of CBF-beta (PEPB2) with the tail region of MYH11 produced by the inversion Inv(16)(p13q22), a translocation associated with acute myeloid leukemia of M4EO subtype. The PEPB2-MYH1 fusion protein also interacts with RUNX1, a well known transcriptional regulator, suggesting that the interaction with HDAC8 may participate to convert RUNX1 into a constitutive transcriptional repressor.

Supplier: Thermo Fisher Scientific

GeneJET Gel Extraction Kit is designed for rapid and efficient purification of DNA fragments from standard or low-melting point agarose gels run in either TAE or TBE buffer.

Supplier: LAUDA

The compact Variocool circulating chillers are ideal for demanding temperature control tasks in laboratories, mini plants and production. The units have a colour TFT screen and membrane keyboard, a USB interface and an integrated alarm which are easily accessable on the front of the unit. They also feature an electronic fill gauge on the display and low fluid level alarm. Models can be either air or water cooled, all have lockable castors. A wide range of factory fitted options and interfaces which can be retrofitted give the user greater flexibility and control. Options include high power pumps to allow higher supply pressure, heaters adapted to the cooling capacity to enable rapid heating as required, flow control, outdoor installation, use with deionised water and noise reduction. Optional interfaces including analogue module, RS232/485, contact modules, profibus and PT100/LiBus modules are all available to facilitate customisation of the unit to applications. For details of the options and interfaces, please contact your local Avantor sales office.

Supplier: Cytiva

Sephadex™ G-50 M DNA Grade chromatography resin for purification of DNA fragments up to 20 bases in length from small molecules such as salts by size exclusion.

Supplier: G-Biosciences

GET™ CLEAN DNA uses high binding affinity GET™ spin columns to remove salts, enzymes, unincorporated nucleotides, radiolabels, and primer-dimers from any DNA preparation of 100 bp to 20 kb. GET™ spin columns has an enhanced binding affinity for DNA, thus eliminating loss or damage of DNA.