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Supplier: Thermo Scientific Chemicals
Description: Powder. Purity based on metal contaminates only.
Supplier: Thermo Scientific Chemicals
Description: MDL: MFCD00003463
Catalog Number: (CA1.05957.1000)
Supplier: MilliporeSigma

Catalog Number: (ABCA_AB287006-5MG)
Supplier: Abcam
Description: (-)-MK 801 HYDROGEN MALEATE AB287006-5MG

New Product


Catalog Number: (CAJT2896-0)
Supplier: VWR International
Description: Lot analysis on label.

Catalog Number: (CA89497-454)
Supplier: Parker Hannifin
Description: GENERATOR HYDROGEN 850 CC/MIN 100 PSIG


Catalog Number: (CA89497-462)
Supplier: Parker Hannifin
Description: GENERATOR HYDROGEN 1300 CC/MIN 100 PSIG


Catalog Number: (77974-644)
Supplier: FUJIFILM IRVINE SCIENTIFIC WAKO CHE
Description: DISODIUM HYDROGEN P 12-WATER GUAR R 500G

New Product


Catalog Number: (CA89497-458)
Supplier: Parker Hannifin
Description: GENERATOR HYDROGEN 1100 CC/MIN 100 PSIG


Catalog Number: (CA89497-526)
Supplier: Parker Hannifin
Description: PM PLAN F/300 ML/MIN HYDROGEN GENERATOR


Catalog Number: (CA89497-450)
Supplier: Parker Hannifin
Description: GENERATOR HYDROGEN 650 CC/MIN 100 PSIG


Catalog Number: (CA200062-418)
Supplier: Enzo Life Sciences
Description: Cleavage of heme b (Fe-protoporphyrin IX) at the a-methene carbon bridge to form the open tetrapyrrole, biliverdin IXa and carbon monoxide (CO) is catalyzed by heme oxygenase (HO) isozymes HO-1 and HO-2 (heme hydrogen-donor: oxygen oxidoreductase; EC 1.14.99.3). In mammalian species, biliverdin reductase (BVR; bilirubin: NAD(P)+ oxidoreductase; EC 1.3.1.24) converts the open tetrapyrrole to bilirubin. This pathway represents the only efficient way of making bilirubin and thereby deterring activation of oxygen by the heme molecule. HO-1 belongs to the heat shock protein family (Hsp32), while HO-2 takes a constitutive form expressed at exceedingly high levels in the brain and testes. The end products of the heme degradation process carry out important physiological activities. CO may act as a messenger in the brain and systemic organs stimulating cGMP-production through interactions with the heme-dependent form of guanylate cyclase. Bile pigments display potent antioxidant activity as well as effective antiviral activity against HIV and herpes virus. BVR is unique among all enzymes characterized to date in having two pH optima (6.8 and 8.7), using a different cofactor at each pH range (NADH at pH 7.0 and NADPH at pH 8.7). The enzyme displays pI and molecular mass microheterogeneity, apparently a result of post translational modifications. In rat, the enzyme also shows a tissue specific developmental pattern. BVR is not inactivated by heat shock, and its preexisting message is not sequestered from translation subsequent to thermal stress. Furthermore, reductase preserves microheterogeneity under thermal stress. BVR expression occurs not only in cells and brain regions that already display HO-1 and HO-2, but also in regions and cell types with potential to induce stress proteins. Rat cDNA for BVR has been isolated and characterized. The deduced protein contains 3 cysteine residues (Cys73, Cys281, and Cys290) involved in cofactor and substrate binding. Human BVR consists of a substantially longer polypeptide than the rat enzyme (41-42 kDa vs. 33 kDa), but also is dual cofactor and dual pH dependent, requires free SH groups for activity, and displays pI and molecular mass microheterogeneity. The human and rat BVR share some antigenic epitopes and show immunochemical cross reactivity.


Catalog Number: (CA89497-524)
Supplier: Parker Hannifin
Description: PM PLAN F/150 ML/MIN HYDROGEN GENERATOR


Catalog Number: (97062-406)
Supplier: VWR
Description: Xylene cyanole FF, Ultrapure

Supplier: VWR International
Description: <p>The VWR 100-series pocket testers provide accurate pH measurements on the go.</p>

New Product

Catalog Number: (RC1155-16)
Supplier: Ricca Chemical
Description: 1% (w/v) Aqueous Solution. Poly Bottle 500mL

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
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