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GENTAUR Europe

 GENTAUR Europe BVBA
Voortstraat 49, 1910 Kampenhout BELGIUM
Tel 0032 16 58 90 45 
Fax 0032 16 50 90 45
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Gentaur Bulgaria

 GENTAUR BULGARIA
53 Iskar Str. 1191 Kokalyane, Sofia
Tel 0035924682280 
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    GENTAUR France

     GENTAUR France SARL
    9, rue Lagrange, 75005 Paris 
    Tel 01 43 25 01 50 
    Fax 01 43 25 01 60
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    Gentaur Germany

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      GmbH Marienbongard 20
    52062 Aachen Deutschland
    Tel (+49) 0241 56 00 99 68 
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    Gentaur London

     GENTAUR Ltd. 
    Howard Frank Turnberry House 
    1404-1410 High Road 
    Whetstone London N20 9BH 
    Tel 020 3393 8531 
    Fax 020 8445 9411
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    GENTAUR Poland

     GENTAUR Poland Sp. z o.o. 

    ul. Grunwaldzka 88/A m.2

    81-771 Sopot, Poland
    Tel  058 710 33 44
    Fax 058 710 33 48 
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    GENTAUR Nederland

     GENTAUR Nederland BV
    Kuiper 1 
    5521 DG Eersel Nederland
    Tel 0208-080893 
    Fax 0497-517897
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    Gentaur Italy

     GENTAUR SRL IVA IT03841300167

    Piazza Giacomo Matteotti, 6, 24122 Bergamo
    Tel 02 36 00 65 93 
    Fax 02 36 00 65 94
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    GENTAUR Spain

     GENTAUR Spain
    Tel 0911876558
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    Genprice USA

    usa-flagGenprice Inc, Logistics
    547, Yurok Circle
    San Jose, CA 95123
    Phone/Fax: 

    (408) 780-0908 

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    GENPRICE Inc. invoicing/ accounting:
    6017 Snell Ave, Suite 357
    San Jose, CA. 96123

     

    Gentaur Serbia

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    GENTAUR Romania

    romGENTAUR Romania

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    GENTAUR Greece

    grGENTAUR Greece 

    Tel 00302111768494 
    Fax 0032 16 50 90 45

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    Other countries

    Other countries
    Luxembourg +35220880274
    Schweiz Züri +41435006251
    Danmark +4569918806
    Österreich +43720880899
    Ceská republika Praha +420246019719
    Ireland Dublin +35316526556
    Norge Oslo +4721031366
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    Friday, 23 August 2013 10:10

    Celastrol Apoptosis Inhibitor

    SIH-333-gentaur-antibodies-celastrol-apoptosis-inhibitorProduct Name: Celastrol
    Catalog #: SIH-333-10MG
    Size: 10mg
    Type: Inhibitor

    Datasheet: Download PDF file

    Description:
     Proteasome inhibitor
    Research Area: Apoptosis
    CAS Number: 34157-83-0
    Formula: C29H38O4
    Molecular weight: 450.6
    Source/Host: Synthetic
    Purity: >98% (TLC); NMR (Conforms)
    Solubility: May be dissolved in DMSO (45mg/mL) or Ethanol (30mg/mL)
    Appearance: Red Powder
    Safety Phrases: 
    Classification: Toxic- Toxic Material Causing Immediate and Serious Toxic Effects                     
    S22 - Do not breathe dust
    S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection
    S24/25- Avoid contact with skin and eyes
    Hazard Statements:                 
    H301 – Toxic if swallowed                                                     
    Precautionary Statements:      
    P301 + P31 – If Swallowed, immediately call a POISON CENTER or doctor.   

    Storage Temp: -20°C

    Shipping Temp: Blue Ice or 4°C

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    Published in Promos

    kinase antibodies gentaurThe process researchers use to generate induced pluripotent stem cells (iPSCs) -- a special type of stem cell that can be made in the lab from any type of adult cell -- is time consuming and inefficient. To speed things up, researchers at Sanford-Burnham Medical Research Institute (Sanford-Burnham) turned to kinase inhibitors. These chemical compounds block the activity of kinases, enzymes responsible for many aspects of cellular communication, survival, and growth.

    As they outline in a paper published September 25 in Nature Communications, the team found several kinase inhibitors that, when added to starter cells, help generate many more iPSCs than the standard method. This new capability will likely speed up research in many fields, better enabling scientists around the world to study human disease and develop new treatments.

    "Generating iPSCs depends on the regulation of communication networks within cells," explained Tariq Rana, Ph.D., program director in Sanford-Burnham's Sanford Children's Health Research Center and senior author of the study. "So, when you start manipulating which genes are turned on or off in cells to create pluripotent stem cells, you are probably activating a large number of kinases. Since many of these active kinases are likely inhibiting the conversion to iPSCs, it made sense to us that adding inhibitors might lower the barrier."

    According to Tony Hunter, Ph.D., professor in the Molecular and Cell Biology Laboratory at the Salk Institute for Biological Studies and director of the Salk Institute Cancer Center, "The identification of small molecules that improve the efficiency of generating iPSCs is an important step forward in being able to use these cells therapeutically. Tariq Rana's exciting new work has uncovered a class of protein kinase inhibitors that override the normal barriers to efficient iPSC formation, and these inhibitors should prove useful in generating iPSCs from new sources for experimental and ultimately therapeutic purposes." Hunter, a kinase expert, was not involved in this study.

    The promise of iPSCs

    At the moment, the only treatment option available to many heart failure patients is a heart transplant. Looking for a better alternative, many researchers are coaxing stem cells into new heart muscle. In Alzheimer's disease, researchers are also interested in stem cells, using them to reproduce a person's own malfunctioning brain cells in a dish, where they can be used to test therapeutic drugs. But where do these stem cells come from? Since the advent of iPSC technology, the answer in many cases is the lab. Like their embryonic cousins, iPSCs can be used to generate just about any cell type -- heart, brain, or muscle, to name a few -- that can be used to test new therapies or potentially to replace diseased or damaged tissue.

    It sounds simple enough: you start with any type of differentiated cell, such as skin cells, add four molecules that reprogram the cells' genomes, and then try to catch those that successfully revert to unspecialized iPSCs. But the process takes a long time and isn't very efficient -- you can start with thousands of skin cells and end up with just a few iPSCs.

    Inhibiting kinases to make more iPSCs

    Zhonghan Li, a graduate student in Rana's laboratory, took on the task of finding kinase inhibitors that might speed up the iPSC-generating process. Scientists in the Conrad Prebys Center for Chemical Genomics, Sanford-Burnham's drug discovery facility, provided Li with a collection of more than 240 chemical compounds that inhibit kinases. Li painstakingly added them one-by-one to his cells and waited to see what happened. Several kinase inhibitors produced many more iPSCs than the untreated cells -- in some cases too many iPSCs for the tiny dish housing them. The most potent inhibitors targeted three kinases in particular: AurkA, P38, and IP3K.

    Working with the staff in Sanford-Burnham's genomics, bioinformatics, animal modeling, and histology core facilities -- valuable resources and expertise available to all Sanford-Burnham scientists and the scientific community at large -- Rana and Li further confirmed the specificity of their findings and even nailed down the mechanism behind one inhibitor's beneficial actions.

    "We found that manipulating the activity of these kinases can substantially increase cellular reprogramming efficiency," Rana said. "But what's more, we've also provided new insights into the molecular mechanism of reprogramming and revealed new functions for these kinases. We hope these findings will encourage further efforts to screen for small molecules that might prove useful in iPSC-based therapies."

    Published in News
    Monday, 22 July 2013 12:58

    Psalmotoxin 1: ASIC1a inhibitor

    Psalmotoxin-1 (PcTx1, Pi-theraphotoxin-Pc1a) has been isolated from the venom of the Spider Psalmopoeus cambridgei (Trinidad chevron tarantula). PcTx1 is known to block potently (IC50 = 1 nM) and selectively the H+-gated sodium channel ASIC1a (acid-sensitive ion channel 1a). The blockage is rapid and reversible. PcTx1 can distinguish between the two ASIC1 splice variants ASIC1a and ASIC1b. PcTx1 loses its capacity to block ASIC1a as soon as this subunit is associated with another member of the family (ASIC2a or ASIC3). PcTx1 demonstrates an analgesic effect in acute and neuropathic pain models.

    PcTx1 technical information

    AA sequence: Glu-Asp-Cys3-Ile-Pro-Lys-Trp-Lys-Gly-Cys10-Val-Asn-Arg-His-Gly-Asp-Cys17-Cys18-Glu-Gly-Leu-Glu-Cys23-Trp-Lys-Arg-Arg-Arg-Ser-Phe-Glu-Val-Cys33-Val-Pro-Lys-Thr-Pro-Lys-Thr
    Disulfide bonds: Cys3-Cys18, Cys10-Cys23 and Cys17-Cys33
    Length (aa): 40
    Formula: C200H312N62O57S6
    Molecular Weight: 4690.82 Da
    Appearance: White lyophilized solid
    Solubility: water and saline buffer
    CAS number: not available
    Source: Synthetic 
    Purity rate: > 98%

    Catalog N° 13PCT001

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    More: Psalmotoxin_1

     

    Published in Promos
    Monday, 22 July 2013 11:57

    GaTx1

    GaTx1: Toxin Properties

    The GaTx1 peptide was originally isolated from the venom of Leiurus quinquestriatus hebraeus. This peptide is a potent and selective inhibitor of CFTR, an anion selective channel belonging to the ABC transporter superfamily. It was shown to block CFTR channels in a state dependent manner by acting from the internal face of the channel and it is supposed to be a non competitive inhibitor of ATP-dependent channel gating. GaTx1 is a valuable tool to explore the function of CFTR.

    Product Specifications

    AA sequence: Cys1-Gly-Pro-Cys4-Phe-Thr-Thr-Asp-His-Gln-Met-Glu-Gln-Lys-Cys15-Ala-Glu-Cys18-Cys19-Gly-Gly-Ile-Gly-Lys-Cys25-Tyr-Gly-Pro-Gln-Cys30-Leu-Cys32-Asn-Arg-NH2
    Disulfide bonds between: Cys1-Cys18, Cys4-Cys25, Cys15-Cys30, and Cys19-Cys32
    Length (aa): 34
    Formula: C147H224N46O47S96 
    Molecular Weight: 3674.2 Da
    Appearance: White lyophilized solid
    Solubility: water and saline buffer
    CAS number: not available
    Source: Synthetic

    Catalog N: 13GTX001

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    Published in Promos